FPUS55 KTWC 231839 ZFPTWC Zone Forecast Product for Southeast Arizona National Weather Service Tucson AZ 1139 AM MST Sun Aug 23 2026 AZZ501-240200- Western Pima County- Including Ajo and Organ Pipe Cactus N.M. 1139 AM MST Sun Aug 23 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .REST OF TODAY...Mostly sunny. Patchy blowing dust. Highs 105 to 110. .TONIGHT...Patchy blowing dust in the evening. Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 80 to 85. .MONDAY...Partly cloudy in the morning then clearing. Highs 103 to 108. .MONDAY NIGHT...Partly cloudy. Lows 81 to 86. .TUESDAY...Mostly sunny. Highs 108 to 113. .TUESDAY NIGHT...Partly cloudy. Lows 84 to 89. .WEDNESDAY...Partly cloudy. Highs 108 to 113. .WEDNESDAY NIGHT...Partly cloudy. Lows 83 to 88. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs 107 to 112. Lows 83 to 88. .FRIDAY THROUGH SATURDAY...Mostly clear with a 10 percent chance of showers and thunderstorms. Highs 107 to 113. Lows 83 to 88. $$ AZZ502-240200- Tohono O'odham Nation- Including Sells 1139 AM MST Sun Aug 23 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .REST OF TODAY...Mostly sunny. Patchy blowing dust. Highs 103 to 108. .TONIGHT...Mostly cloudy. Patchy blowing dust in the evening. Chance of showers and thunderstorms in the evening, then slight chance of showers and thunderstorms after midnight. Lows 77 to 82. Chance of precipitation 30 percent. .MONDAY...Partly cloudy in the morning then clearing. Highs 100 to 105. .MONDAY NIGHT...Partly cloudy. Lows 78 to 83. .TUESDAY...Mostly sunny. Highs 104 to 109. .TUESDAY NIGHT...Mostly clear. Lows 81 to 86. .WEDNESDAY...Mostly sunny. Highs 105 to 110. .WEDNESDAY NIGHT...Partly cloudy. Lows 82 to 87. .THURSDAY...Mostly sunny. Highs 105 to 110. .THURSDAY NIGHT AND FRIDAY...Mostly clear. A 10 percent chance of showers and thunderstorms. Lows 81 to 86. Highs 105 to 110. .FRIDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 80 to 85. .SATURDAY...Mostly sunny. Highs 104 to 109. $$ AZZ503-240200- Upper Santa Cruz River Valley/Altar Valley- Including Nogales 1139 AM MST Sun Aug 23 2026 .REST OF TODAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 95 to 101. .TONIGHT...Mostly cloudy. A 30 percent chance of showers and thunderstorms in the evening. Lows 67 to 73. .MONDAY...Partly cloudy. A 10 percent chance of showers and thunderstorms in the afternoon. Highs 94 to 99. .MONDAY NIGHT...Partly cloudy. Lows 69 to 75. .TUESDAY...Mostly sunny. Highs 96 to 102. .TUESDAY NIGHT...Mostly clear. Lows 71 to 77. .WEDNESDAY...Mostly sunny. Highs 98 to 104. .WEDNESDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 72 to 78. .THURSDAY...Partly cloudy. Highs 98 to 104. .THURSDAY NIGHT...Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows 71 to 77. .FRIDAY...Partly cloudy. Highs 97 to 103. .FRIDAY NIGHT AND SATURDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows 70 to 76. Highs 97 to 103. $$ AZZ504-240200- Tucson Metro Area- Including Tucson, Green Valley, Marana, and Vail 1139 AM MST Sun Aug 23 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .REST OF TODAY...Mostly sunny with a 10 percent chance of showers and thunderstorms. Patchy blowing dust. Highs 101 to 107. Northwest wind around 10 mph. .TONIGHT...Mostly cloudy. A 10 percent chance of showers and thunderstorms in the evening. Patchy blowing dust in the evening. Lows 74 to 80. West wind 5 to 15 mph becoming south around 5 mph after midnight. .MONDAY...Partly cloudy in the morning then clearing. Highs 98 to 104. Southwest wind around 5 mph becoming northwest in the afternoon. .MONDAY NIGHT...Partly cloudy. Lows 75 to 81. Northwest wind around 10 mph. .TUESDAY...Mostly sunny. Highs 102 to 108. Southeast wind around 5 mph becoming northwest around 10 mph in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows 78 to 84. .WEDNESDAY...Mostly sunny. Highs 103 to 109. .WEDNESDAY NIGHT...Partly cloudy. Lows 79 to 85. .THURSDAY...Mostly sunny. Highs 103 to 109. .THURSDAY NIGHT...Partly cloudy. Lows 77 to 85. .FRIDAY...Mostly sunny. Highs 103 to 109. .FRIDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 76 to 84. .SATURDAY...Partly cloudy. Highs 102 to 108. $$ AZZ505-240200- South Central Pinal County- Including Picacho Peak State Park 1139 AM MST Sun Aug 23 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .REST OF TODAY...Mostly sunny. Patchy blowing dust. Highs 103 to 108. .TONIGHT...Mostly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Patchy blowing dust in the evening. Lows 79 to 84. .MONDAY...Partly cloudy. Highs 100 to 105. .MONDAY NIGHT...Partly cloudy. Lows 79 to 84. .TUESDAY...Mostly sunny. Highs 104 to 109. .TUESDAY NIGHT...Mostly clear. Lows 81 to 86. .WEDNESDAY...Mostly sunny. Highs 105 to 110. .WEDNESDAY NIGHT...Mostly clear. Lows 82 to 87. .THURSDAY THROUGH FRIDAY...Mostly clear. Highs 105 to 110. Lows 82 to 87. .FRIDAY NIGHT...Mostly clear with a 10 percent chance of showers and thunderstorms. Lows 81 to 86. .SATURDAY...Mostly sunny. Highs 104 to 109. $$ AZZ506-240200- Southeast Pinal County- Including Mammoth and Oracle 1139 AM MST Sun Aug 23 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .REST OF TODAY...Mostly sunny with a 10 percent chance of showers and thunderstorms. Highs 102 to 108. .TONIGHT...Mostly cloudy. A 10 percent chance of showers and thunderstorms in the evening. Lows 75 to 80. .MONDAY...Mostly cloudy in the morning then becoming partly cloudy. Highs 99 to 105. .MONDAY NIGHT...Partly cloudy. Lows 76 to 81. .TUESDAY...Mostly sunny. Highs 102 to 108. .TUESDAY NIGHT...Mostly clear. Lows 78 to 83. .WEDNESDAY...Mostly sunny. Highs 103 to 109. .WEDNESDAY NIGHT...Partly cloudy. Lows 79 to 84. .THURSDAY THROUGH FRIDAY...Mostly clear. Highs 103 to 109. Lows 79 to 84. .FRIDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 78 to 83. .SATURDAY...Partly cloudy. Highs 102 to 108. $$ AZZ507-240200- Upper San Pedro River Valley- Including Sierra Vista and Benson 1139 AM MST Sun Aug 23 2026 .REST OF TODAY...Mostly sunny. Highs 96 to 102. .TONIGHT...Mostly cloudy. Lows 66 to 72. .MONDAY...Partly cloudy. Highs 94 to 100. .MONDAY NIGHT...Partly cloudy. Lows 67 to 73. .TUESDAY...Mostly sunny. Highs 97 to 103. .TUESDAY NIGHT...Partly cloudy. Lows 71 to 76. .WEDNESDAY...Mostly sunny. Highs 98 to 104. .WEDNESDAY NIGHT...Partly cloudy. Lows 70 to 76. .THURSDAY...Mostly sunny. Highs 98 to 104. .THURSDAY NIGHT...Partly cloudy. Lows 69 to 75. .FRIDAY...Mostly sunny. Highs 97 to 103. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows 68 to 74. Highs 97 to 103. $$ AZZ508-240200- Eastern Cochise County below 5000 feet- Including Willcox and Douglas 1139 AM MST Sun Aug 23 2026 .REST OF TODAY...Mostly sunny. Highs 98 to 103. .TONIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows 67 to 72. .MONDAY...Partly cloudy in the morning then clearing. Highs 97 to 102. .MONDAY NIGHT...Mostly clear. Lows 69 to 74. .TUESDAY...Mostly sunny. Highs 100 to 105. .TUESDAY NIGHT...Partly cloudy. Lows 71 to 76. .WEDNESDAY...Mostly sunny. Highs 100 to 105. .WEDNESDAY NIGHT...Partly cloudy. Lows 71 to 76. .THURSDAY...Mostly sunny. Highs 99 to 104. .THURSDAY NIGHT...Partly cloudy. Lows 70 to 75. .FRIDAY...Mostly sunny. Highs 99 to 104. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows 69 to 74. Highs 99 to 104. $$ AZZ509-240200- Upper Gila River Valley- Including Clifton and Safford 1139 AM MST Sun Aug 23 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .REST OF TODAY...Sunny. Highs 98 to 106. .TONIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows 69 to 77. .MONDAY...Mostly cloudy in the morning then becoming partly cloudy. Highs 97 to 105. .MONDAY NIGHT...Partly cloudy. Lows 70 to 78. .TUESDAY...Mostly sunny. Highs 99 to 107. .TUESDAY NIGHT...Partly cloudy. Lows 72 to 80. .WEDNESDAY...Mostly sunny. Highs 100 to 108. .WEDNESDAY NIGHT...Partly cloudy. Lows 72 to 80. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs 99 to 107. Lows 72 to 80. .FRIDAY...Mostly sunny. Highs 99 to 107. .FRIDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 71 to 79. .SATURDAY...Partly cloudy. Highs 99 to 107. $$ AZZ510-240200- White Mountains of Graham and Greenlee Counties- Including Hannagan Meadow 1139 AM MST Sun Aug 23 2026 .REST OF TODAY...Mostly sunny. Highs 86 to 96. .TONIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows 59 to 71. .MONDAY...Mostly cloudy in the morning then becoming partly cloudy. Highs 86 to 96. .MONDAY NIGHT...Partly cloudy. Lows 61 to 71. .TUESDAY...Mostly sunny. Highs 87 to 97. .TUESDAY NIGHT...Partly cloudy. Lows 61 to 73. .WEDNESDAY...Mostly sunny with a 30 percent chance of showers and thunderstorms. Highs 88 to 98. .WEDNESDAY NIGHT...Partly cloudy. Lows 61 to 73. .THURSDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 87 to 97. .THURSDAY NIGHT...Partly cloudy. Lows 61 to 73. .FRIDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 87 to 97. .FRIDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 60 to 72. .SATURDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 87 to 97. $$ AZZ511-240200- Galiuro and Pinaleno Mountains- Including Mount Graham 1139 AM MST Sun Aug 23 2026 .REST OF TODAY...Mostly sunny. Highs 86 to 96. .TONIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows 65 to 71. .MONDAY...Mostly cloudy in the morning, then partly cloudy with a 10 percent chance of showers and thunderstorms in the afternoon. Highs 84 to 94. .MONDAY NIGHT...Partly cloudy. Lows 66 to 72. .TUESDAY...Mostly sunny. Highs 87 to 97. .TUESDAY NIGHT...Partly cloudy. Lows 68 to 74. .WEDNESDAY...Mostly sunny. Highs 88 to 98. .WEDNESDAY NIGHT...Partly cloudy. Lows 69 to 75. .THURSDAY...Mostly sunny. Highs 88 to 98. .THURSDAY NIGHT...Partly cloudy. Lows 68 to 74. .FRIDAY...Mostly sunny. Highs 87 to 97. .FRIDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 67 to 73. .SATURDAY...Mostly sunny. Highs 87 to 97. $$ AZZ512-240200- Chiricahua Mountains- Including Chiricahua N.M. 1139 AM MST Sun Aug 23 2026 .REST OF TODAY...Mostly sunny. Highs 87 to 97. .TONIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows 63 to 69. .MONDAY...Partly cloudy in the morning then clearing. Highs 87 to 97. .MONDAY NIGHT...Mostly clear. Lows 64 to 70. .TUESDAY...Mostly sunny. Highs 89 to 99. .TUESDAY NIGHT...Partly cloudy. Lows 66 to 72. .WEDNESDAY...Mostly sunny. Highs 89 to 99. .WEDNESDAY NIGHT...Partly cloudy. Lows 66 to 72. .THURSDAY...Mostly sunny. Highs 88 to 98. .THURSDAY NIGHT...Partly cloudy. Lows 65 to 71. .FRIDAY...Mostly sunny. Highs 88 to 98. .FRIDAY NIGHT...Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows 64 to 70. .SATURDAY...Partly cloudy. Highs 88 to 98. $$AZZ513-240200- Dragoon and Mule and Huachuca and Santa Rita Mountains- Including Bisbee, Canelo Hills, and Madera Canyon 1139 AM MST Sun Aug 23 2026 .REST OF TODAY...Partly cloudy with a 10 percent chance of showers and thunderstorms. Highs 88 to 96. .TONIGHT...Mostly cloudy. A 10 percent chance of showers and thunderstorms in the evening. Lows 64 to 69. .MONDAY...Partly cloudy. A 10 percent chance of showers and thunderstorms in the afternoon. Highs 87 to 95. .MONDAY NIGHT...Mostly clear. Lows 66 to 71. .TUESDAY...Mostly sunny. Highs 90 to 98. .TUESDAY NIGHT...Partly cloudy. Lows 68 to 73. .WEDNESDAY...Mostly sunny. Highs 91 to 99. .WEDNESDAY NIGHT...Partly cloudy. Lows 68 to 73. .THURSDAY...Mostly sunny. Highs 91 to 99. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows 67 to 72. Highs 90 to 98. .FRIDAY NIGHT...Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows 67 to 72. .SATURDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 90 to 98. $$ AZZ514-240200- Catalina and Rincon Mountains- Including Mount Lemmon and Summerhaven 1139 AM MST Sun Aug 23 2026 .REST OF TODAY...Partly cloudy with a 10 percent chance of showers and thunderstorms. Highs 83 to 93. .TONIGHT...Mostly cloudy. A 10 percent chance of showers and thunderstorms in the evening. Lows 65 to 71. .MONDAY...Partly cloudy. A 10 percent chance of showers and thunderstorms in the afternoon. Highs 81 to 91. .MONDAY NIGHT...Partly cloudy. Lows 66 to 72. .TUESDAY...Mostly sunny. Highs 84 to 94. .TUESDAY NIGHT...Partly cloudy. Lows 68 to 74. .WEDNESDAY...Mostly sunny. Highs 85 to 95. .WEDNESDAY NIGHT...Partly cloudy. Lows 69 to 75. .THURSDAY...Mostly sunny. Highs 85 to 95. .THURSDAY NIGHT...Partly cloudy. Lows 69 to 75. .FRIDAY...Mostly sunny. Highs 85 to 95. .FRIDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 68 to 74. .SATURDAY...Mostly sunny. Highs 84 to 94. $$ AZZ515-240200- Baboquivari Mountains- Including Kitt Peak 1139 AM MST Sun Aug 23 2026 .REST OF TODAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Patchy blowing dust. Highs 90 to 96. .TONIGHT...Mostly cloudy. Patchy blowing dust in the evening. Chance of showers and thunderstorms in the evening, then slight chance of showers and thunderstorms after midnight. Lows 70 to 75. Chance of precipitation 30 percent. .MONDAY...Partly cloudy. A 10 percent chance of showers and thunderstorms in the afternoon. Highs 88 to 94. .MONDAY NIGHT...Partly cloudy. Lows 71 to 76. .TUESDAY...Mostly sunny. Highs 91 to 97. .TUESDAY NIGHT...Mostly clear. Lows 74 to 79. .WEDNESDAY...Mostly sunny. Highs 92 to 98. .WEDNESDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 74 to 79. .THURSDAY...Mostly sunny. Highs 92 to 98. .THURSDAY NIGHT...Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows 74 to 79. .FRIDAY...Mostly sunny. Highs 92 to 98. .FRIDAY NIGHT...Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows 73 to 78. .SATURDAY...Mostly sunny. Highs 92 to 98. $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson