FPUS55 KPSR 222300 ZFPPSR Zone Forecast Product for Southwest Arizona/Southeast California National Weather Service Phoenix AZ 400 PM MST Sat Aug 22 2026 This is an automatically generated product that provides average values for large geographical areas and may not be representative of the exact location that you are interested in. For a more site specific forecast, please visit weather.gov/phoenix and either (1) Select a location from the dropdown menu above the map or (2) Click a location on the map. You can refine your selection by clicking on the map displayed on the resulting page. AZZ537-540-542>544-546-548-550-551-231100- Northwest Valley-Buckeye/Avondale-Deer Valley-Central Phoenix- North Phoenix/Glendale-Scottsdale/Paradise Valley-East Valley- South Mountain/Ahwatukee-Southeast Valley/Queen Creek- Including the cities of Circle City, Surprise, Wittmann, Beardsley, Sun City West, Avondale, Cashion, Goodyear, Liberty, Peoria, Phoenix, Paradise Valley, Mesa, Chandler, Tempe, Gilbert, Sun Lakes, and Queen Creek 400 PM MST Sat Aug 22 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .TONIGHT...Partly cloudy. Lows 84 to 90. West wind 5 to 10 mph in the evening becoming east after midnight. .SUNDAY...Partly sunny in the morning then becoming mostly sunny. Hot. Highs 107 to 111. Southeast wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy and breezy. Lows 81 to 89. West wind 15 to 25 mph in the evening decreasing to 10 to 15 mph after midnight. .MONDAY...Partly sunny in the morning then becoming mostly sunny. Highs 105 to 109. West wind 5 to 10 mph. .MONDAY NIGHT...Mostly clear. Lows 83 to 89. Northwest wind 5 to 10 mph. .TUESDAY...Sunny and hot. Highs 109 to 114. .TUESDAY NIGHT...Clear. Lows 85 to 91. .WEDNESDAY...Mostly sunny and very hot. Highs 112 to 118. .WEDNESDAY NIGHT...Clear. Lows 85 to 91. .THURSDAY...Sunny and very hot. Highs 112 to 117. .THURSDAY NIGHT...Clear. Lows 85 to 91. .FRIDAY...Mostly sunny and very hot. Highs 112 to 118. .FRIDAY NIGHT...Clear. Lows 85 to 91. .SATURDAY...Mostly sunny and hot. Highs 110 to 115. $$ AZZ541-549-555-231100- Cave Creek/New River-Fountain Hills/East Mesa- Apache Junction/Gold Canyon- Including the cities of Scottsdale, Fountain Hills, and Apache Junction 400 PM MST Sat Aug 22 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .TONIGHT...Partly cloudy. Lows 78 to 88. Northeast wind 5 to 15 mph. .SUNDAY...Partly sunny in the morning then becoming mostly sunny. Hot. Highs 105 to 110. Southeast wind 5 to 10 mph in the morning becoming southwest in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 76 to 86. Northwest wind 10 to 20 mph in the evening becoming northeast 5 to 10 mph after midnight. .MONDAY...Partly sunny. Highs 103 to 108. Southwest wind 5 to 10 mph. .MONDAY NIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 76 to 86. Northwest wind 5 to 10 mph in the evening becoming northeast after midnight. .TUESDAY...Mostly sunny and hot. Highs 108 to 112. .TUESDAY NIGHT...Mostly clear. Lows 82 to 88. .WEDNESDAY...Mostly sunny and hot. Highs 108 to 114. .WEDNESDAY NIGHT...Clear. Lows 82 to 88. .THURSDAY...Mostly sunny and hot. Highs 109 to 113. .THURSDAY NIGHT...Clear. Lows 82 to 88. .FRIDAY...Mostly sunny and hot. Highs 108 to 114. .FRIDAY NIGHT...Mostly clear. Lows 82 to 88. .SATURDAY...Mostly sunny and hot. Highs 109 to 113. $$ AZZ553-554-231100- Northwest Pinal County-West Pinal County- Including the cities of Casa Grande, Cactus Forest, Florence, and Coolidge 400 PM MST Sat Aug 22 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .TONIGHT...Partly cloudy. Patchy blowing dust in the evening. Lows 78 to 88. Southwest wind 10 to 15mph in the evening becoming southeast 5 to 10 mph after midnight. .SUNDAY...Mostly sunny and hot. Highs 106 to 111. Southwest wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Patchy blowing dust in the evening. Breezy. Lows 76 to 86. West wind 15 to 25 mph in the evening becoming south 10 to 15 mph after midnight. Chance of rain 10 percent. .MONDAY...Partly sunny in the morning then becoming mostly sunny. Highs 104 to 109. Southwest wind around 5 mph in the morning becoming northwest 5 to 10 mph in the afternoon. .MONDAY NIGHT...Partly cloudy. Lows 77 to 87. West wind 5 to 10 mph in the evening becoming southwest around 5 mph after midnight. .TUESDAY...Mostly sunny and hot. Highs 107 to 113. .TUESDAY NIGHT...Mostly clear. Lows 83 to 90. .WEDNESDAY...Mostly sunny and very hot. Highs 110 to 116. .WEDNESDAY NIGHT...Clear. Lows 82 to 89. .THURSDAY...Sunny and very hot. Highs 110 to 116. .THURSDAY NIGHT...Clear. Lows 82 to 89. .FRIDAY...Mostly sunny and very hot. Highs 110 to 116. .FRIDAY NIGHT...Mostly clear. Lows 82 to 89. .SATURDAY...Mostly sunny and hot. Highs 108 to 114. $$ AZZ532-231100- Yuma- Including the cities of Yuma and Fortuna Foothills 400 PM MST Sat Aug 22 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .TONIGHT...Mostly clear and warmer. Lows 88 to 89. West wind 5 to 10 mph in the evening becoming south after midnight. .SUNDAY...Mostly sunny and hot. Highs near 112. South wind 5 to 15 mph. .SUNDAY NIGHT...Partly cloudy. Lows 85 to 87. South wind 10 to 20 mph. .MONDAY...Mostly sunny. Highs near 109. South wind 5 to 15 mph. .MONDAY NIGHT...Mostly clear. Lows 85 to 87. South wind 5 to 10 mph. .TUESDAY...Sunny and hot. Highs 112 to 115. .TUESDAY NIGHT...Clear. Lows near 90. .WEDNESDAY...Mostly sunny and very hot. Highs 116 to 118. .WEDNESDAY NIGHT...Clear. Lows near 90. .THURSDAY...Mostly sunny and very hot. Highs 115 to 117. .THURSDAY NIGHT...Clear. Lows in the mid to upper 80s. .FRIDAY...Mostly sunny and very hot. Highs 115 to 117. .FRIDAY NIGHT...Clear. Lows near 90. .SATURDAY...Mostly sunny and hot. Highs 113 to 115. $$ AZZ562-231100- Globe/Miami- Including the cities of Globe and Miami 400 PM MST Sat Aug 22 2026 .TONIGHT...Partly cloudy. Lows 68 to 78. North wind 10 to 15 mph in the evening becoming east 5 to 10 mph after midnight. .SUNDAY...Mostly sunny in the morning, then partly sunny with a slight chance of afternoon showers and thunderstorms. Highs 95 to 105. East wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. Chance of rain 10 percent. .SUNDAY NIGHT...Partly cloudy. Lows 67 to 77. West wind 5 to 15 mph. .MONDAY...Partly sunny. Highs 93 to 103. Northwest wind 5 to 10 mph. .MONDAY NIGHT...Partly cloudy. Lows 68 to 78. North wind 5 to 10 mph. .TUESDAY...Mostly sunny. Highs 100 to 106. .TUESDAY NIGHT...Mostly clear. Lows in the upper 70s. .WEDNESDAY...Mostly sunny. Highs 101 to 107. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. .THURSDAY...Sunny. Highs 102 to 108. .THURSDAY NIGHT...Mostly clear. Lows in the upper 70s. .FRIDAY...Mostly sunny. Highs 102 to 108. .FRIDAY NIGHT...Mostly clear. Lows near 80. .SATURDAY...Mostly sunny. Highs 101 to 107. $$ AZZ556>558-561-231100- Tonto Basin-Mazatzal Mountains-Pinal/Superstition Mountains- Dripping Springs- Including the cities of Punkin Center, Sunflower, Hayden, and Winkelman 400 PM MST Sat Aug 22 2026 .TONIGHT...Partly cloudy. Lows 72 to 82. Northeast wind 5 to 15 mph. .SUNDAY...Mostly sunny, otherwise partly cloudy with a slight chance of afternoon showers and thunderstorms. Highs 101 to 106. East wind 5 to 10 mph in the morning becoming west in the afternoon. Chance of rain 10 percent. .SUNDAY NIGHT...Partly cloudy. Lows 71 to 81. Northwest wind 5 to 15 mph. .MONDAY...Partly sunny. Highs 101 to 106. West wind 5 to 10 mph. .MONDAY NIGHT...Partly cloudy. Lows 72 to 82. Northwest wind 10 to 15 mph in the evening becoming northeast 5 to 10 mph after midnight. .TUESDAY...Mostly sunny. Highs 94 to 108. .TUESDAY NIGHT...Mostly clear. Lows 71 to 84. .WEDNESDAY...Mostly sunny. Highs 95 to 109. .WEDNESDAY NIGHT...Mostly clear. Lows 71 to 84. .THURSDAY...Mostly sunny. Highs 95 to 109. .THURSDAY NIGHT...Mostly clear. Lows 71 to 84. .FRIDAY...Mostly sunny. Highs 95 to 109. .FRIDAY NIGHT...Mostly clear. Lows 71 to 84. .SATURDAY...Mostly sunny. Highs 95 to 109. $$ AZZ545-547-552-231100- New River Mesa-Rio Verde/Salt River-Superior- Including the cities of Tortilla Flat and Superior 400 PM MST Sat Aug 22 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .TONIGHT...Partly cloudy. Lows 76 to 86. Northeast wind 5 to 15 mph. .SUNDAY...Partly sunny in the morning then becoming mostly sunny. Hot. Highs 105 to 110. East wind 5 to 10 mph in the morning becoming west in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 76 to 86. North wind 5 to 15 mph. .MONDAY...Partly sunny. Highs 103 to 108. North wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .MONDAY NIGHT...Partly cloudy. Lows 75 to 85. Northwest wind 5 to 10 mph in the evening becoming northeast after midnight. .TUESDAY...Mostly sunny and hot. Highs 102 to 112. .TUESDAY NIGHT...Mostly clear. Lows 78 to 87. .WEDNESDAY...Mostly sunny and hot. Highs 103 to 113. .WEDNESDAY NIGHT...Clear. Lows 78 to 87. .THURSDAY...Mostly sunny and hot. Highs 103 to 113. .THURSDAY NIGHT...Clear. Lows 78 to 87. .FRIDAY...Mostly sunny and hot. Highs 103 to 113. .FRIDAY NIGHT...Mostly clear. Lows 79 to 87. .SATURDAY...Sunny and hot. Highs 103 to 113. $$ AZZ560-231100- San Carlos- Including the cities of San Carlos and Peridot 400 PM MST Sat Aug 22 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .TONIGHT...Partly cloudy. Lows 70 to 80. North wind 5 to 15 mph. .SUNDAY...Mostly sunny. Highs 98 to 108. East wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy in the evening then considerable cloudiness. Lows 68 to 78. Northwest wind 5 to 15 mph. .MONDAY...Partly sunny. Highs 98 to 108. West wind 5 to 10 mph. .MONDAY NIGHT...Partly cloudy. Lows 69 to 79. Northwest wind 5 to 10 mph. .TUESDAY...Mostly sunny and hot. Highs 104 to 110. .TUESDAY NIGHT...Mostly clear. Lows near 80. .WEDNESDAY...Mostly sunny and hot. Highs 105 to 111. .WEDNESDAY NIGHT...Mostly clear. Lows near 80. .THURSDAY...Mostly sunny and hot. Highs 105 to 111. .THURSDAY NIGHT...Mostly clear. Lows near 80. .FRIDAY...Mostly sunny and hot. Highs 105 to 111. .FRIDAY NIGHT...Partly cloudy. Lows near 80. .SATURDAY...Mostly sunny and hot. Highs 105 to 111. $$ AZZ563-231100- Southeast Gila County- 400 PM MST Sat Aug 22 2026 .TONIGHT...Partly cloudy. Lows 68 to 78. Northeast wind 5 to 15 mph. .SUNDAY...Mostly sunny, otherwise partly cloudy with a slight chance of afternoon showers and thunderstorms. Highs 92 to 102. Southeast wind 5 to 10 mph in the morning becoming west in the afternoon. Chance of rain 10 percent. .SUNDAY NIGHT...Partly cloudy. Lows 68 to 78. North wind 5 to 15 mph. .MONDAY...Partly sunny. Highs 92 to 102. North wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .MONDAY NIGHT...Partly cloudy. Lows 68 to 78. North wind 5 to 15 mph. .TUESDAY...Mostly sunny. Highs 92 to 104. .TUESDAY NIGHT...Partly cloudy. Lows 61 to 79. .WEDNESDAY...Mostly sunny. Highs 93 to 105. .WEDNESDAY NIGHT...Partly cloudy. Lows 61 to 80. .THURSDAY...Mostly sunny. Highs 93 to 105. .THURSDAY NIGHT...Partly cloudy. Lows 62 to 79. .FRIDAY...Mostly sunny. Highs 93 to 105. .FRIDAY NIGHT...Partly cloudy. Lows 62 to 80. .SATURDAY...Mostly sunny. Highs 93 to 105. $$ AZZ539-559-231100- Gila Bend-Sonoran Desert Natl Monument- Including the cities of Gila Bend, Sentinel, and Kaka 400 PM MST Sat Aug 22 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .TONIGHT...Partly cloudy. Patchy blowing dust in the evening. Lows 80 to 90. Southwest wind 10 to 20 mph in the evening becoming south 5 to 10 mph after midnight. .SUNDAY...Mostly sunny. Patchy blowing dust in the afternoon. Hot. Highs 108 to 113. Southwest wind 5 to 10 mph. .SUNDAY NIGHT...Patchy blowing dust in the evening. Partly cloudy with a slight chance of showers. Windy. Lows 78 to 88. Southwest wind 15 to 25 mph in the evening decreasing to 10 to 15 mph after midnight. Gusts up to 35 mph in the evening. Chance of rain 10 percent. .MONDAY...Partly sunny in the morning then becoming mostly sunny. Hot. Highs 106 to 111. South wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .MONDAY NIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 77 to 87. Southwest wind around 5 mph. .TUESDAY...Mostly sunny and very hot. Highs 106 to 116. .TUESDAY NIGHT...Clear. Lows 85 to 90. .WEDNESDAY...Mostly sunny and very hot. Highs 109 to 119. .WEDNESDAY NIGHT...Clear. Lows 84 to 89. .THURSDAY...Mostly sunny and very hot. Highs 110 to 118. .THURSDAY NIGHT...Clear. Lows 84 to 89. .FRIDAY...Mostly sunny and very hot. Highs 110 to 118. .FRIDAY NIGHT...Mostly clear. Lows 85 to 90. .SATURDAY...Mostly sunny and very hot. Highs 108 to 116. $$ AZZ534-538-231100- Aguila Valley-Tonopah Desert- Including the cities of Aguila, Gladden, Wickenburg, Arlington, Hassayampa, Tonopah, and Wintersburg 400 PM MST Sat Aug 22 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .TONIGHT...Partly cloudy. Lows 79 to 89. West wind 5 to 10 mph in the evening becoming north after midnight. .SUNDAY...Partly sunny in the morning then becoming mostly sunny. Hot. Highs 108 to 113. Southeast wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .SUNDAY NIGHT...Patchy blowing dust in the evening. Mostly clear in the evening, then partly cloudy with a slight chance of showers after midnight. Breezy. Lows 77 to 87. Southwest wind 10 to 20 mph. Gusts up to 30 mph in the evening. Chance of rain 10 percent. .MONDAY...Partly sunny in the morning then becoming mostly sunny. Hot. Highs 105 to 110. Southwest wind 5 to 10 mph. .MONDAY NIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 77 to 87. Northwest wind 5 to 10 mph. .TUESDAY...Sunny and very hot. Highs 107 to 115. .TUESDAY NIGHT...Clear. Lows 82 to 90. .WEDNESDAY...Mostly sunny and very hot. Highs 110 to 118. .WEDNESDAY NIGHT...Clear. Lows 81 to 89. .THURSDAY...Mostly sunny and very hot. Highs 110 to 118. .THURSDAY NIGHT...Clear. Lows 81 to 89. .FRIDAY...Mostly sunny and very hot. Highs 110 to 118. .FRIDAY NIGHT...Mostly clear. Lows 81 to 89. .SATURDAY...Mostly sunny and very hot. Highs 108 to 116. $$ AZZ531-533-231100- Kofa-Central La Paz- Including the cities of Palm Canyon, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, and Salome 400 PM MST Sat Aug 22 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .TONIGHT...Partly cloudy. Lows 80 to 90. West wind 5 to 10 mph in the evening becoming south after midnight. .SUNDAY...Mostly sunny, otherwise partly cloudy with a slight chance of afternoon showers and thunderstorms. Hot. Highs 108 to 113. South wind 5 to 10 mph. Chance of rain 10 percent. .SUNDAY NIGHT...Partly cloudy. Lows 77 to 87. South wind 5 to 15 mph. .MONDAY...Mostlysunny, otherwise partly cloudy with a slight chance of afternoon showers and thunderstorms. Hot. Highs 105 to 110. South wind 5 to 10 mph in the morning becoming southwest in the afternoon. Chance of rain 10 percent. .MONDAY NIGHT...Mostly clear. Lows 77 to 87. West wind 5 to 10 mph. .TUESDAY...Sunny and hot. Highs 106 to 114. .TUESDAY NIGHT...Clear. Lows 82 to 90. .WEDNESDAY...Mostly sunny and very hot. Highs 110 to 118. .WEDNESDAY NIGHT...Clear. Lows 83 to 90. .THURSDAY...Mostly sunny and very hot. Highs 110 to 118. .THURSDAY NIGHT...Mostly clear. Lows 82 to 89. .FRIDAY...Mostly sunny and very hot. Highs 110 to 118. .FRIDAY NIGHT...Mostly clear. Lows 83 to 90. .SATURDAY...Mostly sunny and very hot. Highs 107 to 115. $$ AZZ535-536-231100- Southeast Yuma County-Gila River Valley- Including the city of Ligurta 400 PM MST Sat Aug 22 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .TONIGHT...Partly cloudy. Lows 79 to 89. Southwest wind 5 to 15 mph. .SUNDAY...Mostly sunny and hot. Highs 108 to 113. Southwest wind 5 to 10 mph. .SUNDAY NIGHT...Partly cloudy. Lows 77 to 87. South wind 10 to 20 mph. .MONDAY...Partly sunny in the morning then becoming mostly sunny. Hot. Highs 106 to 111. South wind 5 to 10 mph. .MONDAY NIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 78 to 88. Southwest wind around 5 mph in the evening becoming light after midnight. .TUESDAY...Sunny and very hot. Highs 111 to 115. .TUESDAY NIGHT...Clear. Lows 86 to 91. .WEDNESDAY...Mostly sunny and very hot. Highs 113 to 119. .WEDNESDAY NIGHT...Clear. Lows 84 to 89. .THURSDAY...Mostly sunny and very hot. Highs 112 to 118. .THURSDAY NIGHT...Mostly clear. Lows 83 to 89. .FRIDAY...Mostly sunny and very hot. Highs 113 to 118. .FRIDAY NIGHT...Clear. Lows 84 to 89. .SATURDAY...Mostly sunny and very hot. Highs 110 to 116. $$ AZZ530-CAZ569-231100- Parker Valley-Palo Verde Valley- Including the cities of Parker, Ehrenberg, Martinez Lake, Blythe, Palo Verde, and Ripley 400 PM MST Sat Aug 22 2026 /400 PM PDT Sat Aug 22 2026/ ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST /8 PM PDT/ SATURDAY... .TONIGHT...Mostly clear. Lows 80 to 90. Southwest wind 5 to 15 mph. .SUNDAY...Mostly sunny and very hot. Highs 110 to 115. Southwest wind 5 to 15 mph. .SUNDAY NIGHT...Partly cloudy. Lows 78 to 88. South wind 5 to 15 mph. .MONDAY...Mostly sunny and hot. Highs 107 to 112. South wind 5 to 10 mph. .MONDAY NIGHT...Mostly clear. Lows 78 to 88. Southwest wind 5 to 10 mph. .TUESDAY...Sunny and very hot. Highs 109 to 115. .TUESDAY NIGHT...Clear. Lows 84 to 90. .WEDNESDAY...Mostly sunny and very hot. Highs 113 to 119. .WEDNESDAY NIGHT...Clear. Lows 83 to 89. .THURSDAY...Mostly sunny and very hot. Highs 113 to 119. .THURSDAY NIGHT...Mostly clear. Lows 83 to 89. .FRIDAY...Mostly sunny and very hot. Highs 113 to 119. .FRIDAY NIGHT...Clear. Lows 84 to 89. .SATURDAY...Mostly sunny and very hot. Highs 110 to 116. $$ CAZ565-570-231100- Imperial County Southeast-Chuckwalla Valley- Including the cities of Winterhaven and Midland 400 PM PDT Sat Aug 22 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SATURDAY... .TONIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 81 to 91. West wind 10 to 15 mph. .SUNDAY...Mostly sunny and very hot. Highs 110 to 115. West wind 5 to 10 mph in the morning becoming south 10 to 15 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 79 to 89. South wind 5 to 15 mph. .MONDAY...Mostly sunny, otherwise partly cloudy with a slight chance of showers in the morning, then a slight chance of afternoon showers and thunderstorms. Hot. Highs 106 to 111. South wind 5 to 10 mph. Chance of rain 10 percent. .MONDAY NIGHT...Mostly clear. Lows 80 to 90. Southwest wind 5 to 10 mph. .TUESDAY...Sunny and hot. Highs 106 to 114. .TUESDAY NIGHT...Clear. Lows 85 to 92. .WEDNESDAY...Sunny and very hot. Highs 111 to 119. .WEDNESDAY NIGHT...Clear. Lows 84 to 92. .THURSDAY...Mostly sunny and very hot. Highs 110 to 118. .THURSDAY NIGHT...Mostly clear. Lows 83 to 91. .FRIDAY...Mostly sunny and very hot. Highs 111 to 119. .FRIDAY NIGHT...Clear. Lows 84 to 92. .SATURDAY...Mostly sunny and very hot. Highs 108 to 116. $$ CAZ564-568-231100- Chuckwalla Mountains-Chiriaco Summit- Including the cities of Imperial Hot Mineral Springs and Chiriaco Summit 400 PM PDT Sat Aug 22 2026 .TONIGHT...Partly cloudy in the evening then becoming clear. Lows 80 to 90. West wind 10 to 15 mph in the evening becoming northwest after midnight. .SUNDAY...Mostly sunny and hot. Highs 106 to 111. Southeast wind 5 to 10 mph in the morning becoming south 10 to 15 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 77 to 87. South wind 5 to 15 mph. .MONDAY...Mostly sunny, otherwise partly cloudy with a slight chance of showers in the morning. Highs 103 to 108. South wind 5 to 10 mph. Chance of rain 10 percent. .MONDAY NIGHT...Mostly clear. Lows 78 to 88. Southwest wind 5 to 10 mph in the evening becoming northwest around 5 mph after midnight. .TUESDAY...Sunny and hot. Highs 101 to 111. .TUESDAY NIGHT...Clear. Lows 81 to 90. .WEDNESDAY...Sunny and very hot. Highs 104 to 116. .WEDNESDAY NIGHT...Clear. Lows 82 to 90. .THURSDAY...Mostly sunny and very hot. Highs 105 to 115. .THURSDAY NIGHT...Mostly clear. Lows 81 to 89. .FRIDAY...Mostly sunny and very hot. Highs 105 to 115. .FRIDAY NIGHT...Clear. Lows 81 to 89. .SATURDAY...Sunny and hot. Highs 103 to 113. $$ CAZ563-231100- Salton Sea- Including the city of Desert Shores 400 PM PDT Sat Aug 22 2026 .TONIGHT...Partly cloudy in the evening then becoming clear. Lows 82 to 92. West wind 5 to 15 mph. .SUNDAY...Mostly sunny and hot. Highs 108 to 113. Southeast wind 10 to 15 mph. .SUNDAY NIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 80 to 90. Southwest wind 5 to 10 mph in the evening becoming east after midnight. .MONDAY...Mostly sunny. Highs 104 to 109. Southeast wind around 5 mph in the morning becoming south in the afternoon. .MONDAY NIGHT...Mostly clear. Lows 82 to 92. Northwest wind 5 to 10 mph. .TUESDAY...Mostly sunny and hot. Highs 102 to 112. .TUESDAY NIGHT...Clear. Lows 88 to 94. .WEDNESDAY...Sunny and very hot. Highs 106 to 116. .WEDNESDAY NIGHT...Clear. Lows 87 to 93. .THURSDAY...Mostly sunny and very hot. Highs 106 to 116. .THURSDAY NIGHT...Mostly clear. Lows 87 to 93. .FRIDAY...Mostly sunny and very hot. Highs 106 to 116. .FRIDAY NIGHT...Clear. Lows 87 to 93. .SATURDAY...Sunny and hot. Highs 104 to 114. $$ CAZ567-231100- Imperial Valley- Including the cities of El Centro, Calexico, Alamorio, and Brawley 400 PM PDT Sat Aug 22 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SATURDAY... .TONIGHT...Partly cloudy in the evening then becoming clear. Lows 78 to 88. West wind 5 to 15 mph. .SUNDAY...Mostly sunny and very hot. Highs 110 to 115. South wind 5 to 10 mph. .SUNDAY NIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 77 to 87. South wind 5 to 15 mph. .MONDAY...Mostly sunny, otherwise partly cloudy with a slight chance of afternoon showers and thunderstorms. Hot. Highs 107 to 112. Southeast wind around 5 mph. Chance of rain 10 percent. .MONDAY NIGHT...Mostly clear. Lows 78 to 88. Southwest wind around 5 mph in the evening becoming light after midnight. .TUESDAY...Sunny and very hot. Highs 111 to 115. .TUESDAY NIGHT...Clear. Lows in the upper 80s. .WEDNESDAY...Sunny and very hot. Highs 115 to 119. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 80s. .THURSDAY...Mostly sunny and very hot. Highs 115 to 119. .THURSDAY NIGHT...Mostly clear. Lows in the mid to upper 80s. .FRIDAY...Sunny and very hot. Highs 115 to 119. .FRIDAY NIGHT...Mostly clear. Lows in the upper 80s. .SATURDAY...Sunny and very hot. Highs 112 to 116. $$ CAZ566-231100- Imperial County West- Including the cities of Coolidge Springs, Salton City, Winona, Coyote Wells, Ocotillo, and Plaster City 400 PM PDT Sat Aug 22 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SATURDAY... .TONIGHT...Mostly clear. Lows 81 to 91. West wind 5 to 15 mph. .SUNDAY...Mostly sunny in the morning then becoming partly sunny. Very hot. Highs 111 to 116. South wind 5 to 15 mph. .SUNDAY NIGHT...Mostly clear. Lows 80 to 90. Southwest wind 5 to 15 mph. .MONDAY...Mostly sunny, otherwise partly cloudy with a slight chance of afternoon showers and thunderstorms. Hot. Highs 108 to 113. East wind 5 to 10 mph. Chance of rain 10 percent. .MONDAY NIGHT...Mostly clear. Lows 81 to 91. West wind around 5 mph. .TUESDAY...Sunny and very hot. Highs 111 to 115. .TUESDAY NIGHT...Clear. Lows 87 to 92. .WEDNESDAY...Sunny and very hot. Highs 114 to 120. .WEDNESDAY NIGHT...Mostly clear. Lows 87 to 92. .THURSDAY...Mostly sunny and very hot. Highs 114 to 120. .THURSDAY NIGHT...Mostly clear. Lows 87 to 92. .FRIDAY...Sunny and very hot. Highs 114 to 120. .FRIDAY NIGHT...Clear. Lows 87 to 92. .SATURDAY...Sunny and very hot. Highs 112 to 118. $$ CAZ562-231100- Imperial County Southwest- Including the city of Mountain Spring 400 PM PDT Sat Aug 22 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SATURDAY... .TONIGHT...Clear and breezy. Lows 83 to 93. Southwest wind 15 to 25 mph. .SUNDAY...Mostly sunny in the morning then becoming partly sunny. Very hot. Highs 110 to 115. South wind 10 to 15 mph. .SUNDAY NIGHT...Mostly clear and breezy. Lows 83 to 93. Southwest wind 10 to 20 mph. Gusts up to 30 mph in the evening. .MONDAY...Mostly sunny, otherwise partly cloudy with a slight chance of afternoon showers and thunderstorms. Hot. Highs 107 to 112. West wind 5 to 10 mph in the morning becoming southeast in the afternoon. Chance of rain 10 percent. .MONDAY NIGHT...Mostly clear. Lows 83 to 93. Southwest wind 10 to 15 mph. .TUESDAY...Sunny and hot. Highs 104 to 114. .TUESDAY NIGHT...Clear. Lows 84 to 94. .WEDNESDAY...Sunny and very hot. Highs 108 to 118. .WEDNESDAY NIGHT...Mostly clear. Lows 84 to 94. .THURSDAY...Mostly sunny and very hot. Highs 108 to 118. .THURSDAY NIGHT...Mostly clear. Lows 84 to 94. .FRIDAY...Sunny. A 10 percent chance of afternoon showers and thunderstorms. Very hot. Highs 108 to 118. .FRIDAY NIGHT...Mostly clear. Lows 84 to 94. .SATURDAY...Sunny and very hot. Highs 106 to 116. $$ CAZ560-561-231100- Joshua Tree NP West-Joshua Tree NP East- Including the cities of Cottonwood Visitor and Lost Horse-Keys Village 400 PM PDT Sat Aug 22 2026 .TONIGHT...Mostly clear. Lows 77 to 87. West wind 10 to 15 mph. .SUNDAY...Sunny. Highs 99 to 109. Southwest wind 5 to 15 mph. .SUNDAY NIGHT...Mostly clear in the evening then becoming partly cloudy. Lows 76 to 86. West wind 5 to 15 mph. .MONDAY...Mostly sunny, otherwise partly cloudy with a slight chance of showers in the morning, then a slight chance of afternoon showers and thunderstorms. Highs 97 to 107. Southwest wind 5 to 10 mph. Chance of rain 10 percent. .MONDAY NIGHT...Mostly clear. Lows 76 to 86. West wind 5 to 10 mph. .TUESDAY...Mostly sunny. Highs 94 to 108. .TUESDAY NIGHT...Mostly clear. Lows 71 to 88. .WEDNESDAY...Sunny and hot. Highs 97 to 113. .WEDNESDAY NIGHT...Clear. Lows 71 to 88. .THURSDAY...Mostly sunny and hot. Highs 97 to 113. .THURSDAY NIGHT...Mostly clear. Lows 71 to 87. .FRIDAY...Mostly sunny and hot. Highs 97 to 113. .FRIDAY NIGHT...Mostly clear. Lows 71 to 88. .SATURDAY...Sunny and hot. Highs 95 to 111. $$ Visit us on Facebook, Twitter, and at weather.gov/phoenix