FPUS55 KBOI 191836 ZFPBOI Zone Forecasts for Southwest Idaho/Southeast Oregon National Weather Service Boise ID 1236 PM MDT Tue May 19 2026 Forecast Updated. Spot temperatures are for the rest of today, tonight, and Wednesday. IDZ011-200200- West Central Mountains- 1236 PM MDT Tue May 19 2026 .REST OF TODAY...Mostly sunny. Highs 52 to 66. .TONIGHT...Partly cloudy. Lows 32 to 42. .WEDNESDAY...Partly sunny. Highs 54 to 68. .WEDNESDAY NIGHT...Partly cloudy with a chance of rain showers in the evening, then mostly clear after midnight. Chance of rain 40 percent. Lows 32 to 42. .THURSDAY...Areas of fog in the morning. Sunny. Highs 57 to 71. .THURSDAY NIGHT...Increasing clouds. Lows 36 to 46. .FRIDAY THROUGH SUNDAY...Mostly clear. Highs 64 to 78. Lows 39 to 50. .SUNDAY NIGHT AND MEMORIAL DAY...Partly cloudy. Lows 43 to 53. Highs 63 to 77. && TEMPERATURE McCall 60 32 63 $$ = IDZ013-200200- Boise Mountains- 1236 PM MDT Tue May 19 2026 .REST OF TODAY...Sunny. Highs 54 to 68. .TONIGHT...Decreasing clouds. Lows 28 to 43. .WEDNESDAY...Mostly sunny. Highs 57 to 71. .WEDNESDAY NIGHT...Mostly clear. Lows 28 to 43. .THURSDAY...Sunny. Highs 61 to 76. .THURSDAY NIGHT...Increasing clouds. Lows 32 to 47. .FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs 64 to 78. Lows 34 to 49. .SATURDAY THROUGH MEMORIAL DAY...Mostly clear. Highs 71 to 86. Lows 39 to 54. && TEMPERATURE Idaho City 67 32 70 $$ = IDZ028-200200- Camas Prairie- 1236 PM MDT Tue May 19 2026 .REST OF TODAY...Sunny. Highs 59 to 64. West winds 10 to 15 mph with gusts to 25 mph. .TONIGHT...Decreasing clouds. Lows 29 to 34. Northwest winds 10 to 15 mph. Gusts to 25 mph in the evening. .WEDNESDAY...Mostly sunny. Highs 63 to 68. Breezy. West winds up to 10 mph in the morning, increasing to 10 to 20 mph with gusts to 30 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows 33 to 38. Breezy. Northwest winds 10 to 20 mph. Gusts to 30 mph in the evening. .THURSDAY...Mostly sunny. Highs 65 to 70. North winds up to 10 mph in the morning, shifting to west around 10 mph in the afternoon. Gusts to 20 mph. .THURSDAY NIGHT...Partly cloudy. Lows 34 to 39. .FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs 68 to 73. Lows 35 to 41. .SATURDAY...Sunny. Highs 75 to 80. .SATURDAY NIGHT...Increasing clouds. Lows 39 to 45. .SUNDAY THROUGH MEMORIAL DAY...Mostly clear. Highs 77 to 83. Lows 40 to 46. Windy. && TEMPERATURE Fairfield 62 29 66 $$ = IDZ033-200200- Upper Weiser River- 1236 PM MDT Tue May 19 2026 .REST OF TODAY...Mostly sunny. Highs 65 to 71. Light winds. .TONIGHT...Partly cloudy. Lows 41 to 46. Light winds. .WEDNESDAY...Mostly sunny. Highs 68 to 74. Northwest winds up to 10 mph. .WEDNESDAY NIGHT...Mostly clear. Lows 43 to 48. North winds 10 to 15 mph with gusts to 30 mph. .THURSDAY...Sunny. Highs 71 to 77. North winds 10 to 15 mph. .THURSDAY NIGHT...Increasing clouds. Lows 45 to 50. .FRIDAY THROUGH SUNDAY...Mostly clear. Highs 77 to 87. Lows 47 to 55. .SUNDAY NIGHT AND MEMORIAL DAY...Partly cloudy. Lows 51 to 56. Highs 77 to 83. && TEMPERATURE Council 69 44 72 Cambridge 71 41 74 $$ = ORZ064-200200- Oregon Lower Treasure Valley- 1236 PM MDT Tue May 19 2026 /1136 AM PDT Tue May 19 2026/ .REST OF TODAY...Sunny. Highs 70 to 75. Light winds. .TONIGHT...Partly cloudy. Lows 45 to 50. North winds up to 10 mph. .WEDNESDAY...Mostly sunny. Highs 73 to 78. Northwest winds up to 10 mph. .WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows 47 to 52. Breezy. Northwest winds 10 to 20 mph with gusts to 30 mph. .THURSDAY...Sunny. Highs 75 to 80. North winds 10 to 15 mph. .THURSDAY NIGHT...Partly cloudy. Lows 48 to 53. .FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs 78 to 83. Lows 49 to 54. .SATURDAY THROUGH SUNDAY...Mostly clear. Highs 85 to 91. Lows 54 to 59. .SUNDAY NIGHT AND MEMORIAL DAY...Partly cloudy. Lows 53 to 58. Highs 82 to 87. Breezy. && TEMPERATURE Ontario 73 46 76 $$ = IDZ012-200200- Lower Treasure Valley- 1236 PM MDT Tue May 19 2026 .REST OF TODAY...Sunny. Highs 69 to 74. Northwest winds up to 10 mph. .TONIGHT...Partly cloudy. Lows 43 to 48. North winds up to 10 mph. .WEDNESDAY...Mostly sunny. Highs 73 to 78. Light winds in the morning, becoming northwest 10 to 15 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows 46 to 51. Northwest winds 10 to 15 mph with gusts to 25 mph. .THURSDAY...Sunny. Highs 75 to 80. Northwest winds 10 to 15 mph with gusts to 25 mph. .THURSDAY NIGHT...Increasing clouds. Lows 47 to 52. .FRIDAY...Sunny. Highs 78 to 83. .FRIDAY NIGHT...Clear. Lows 48 to 53. .SATURDAY THROUGH SUNDAY...Mostly clear. Highs 84 to 91. Lows 52 to 57. .SUNDAY NIGHT AND MEMORIAL DAY...Partly cloudy. Lows 53 to 58. Highs 83 to 88. && TEMPERATURE Caldwell 72 44 75 $$ = IDZ014-200200- Upper Treasure Valley- 1236 PM MDT Tue May 19 2026 .REST OF TODAY...Sunny. Highs 68 to 73. Northwest winds 10 to 15 mph. .TONIGHT...Mostly clear. Lows 39 to 45. North winds 10 to 15 mph in the evening, becoming light after midnight. .WEDNESDAY...Mostly sunny. Highs 72 to 77. Light winds in the morning, becoming northwest 10 to 15 mph with gusts to 25 mph in the afternoon. .WEDNESDAY NIGHT...Increasing clouds. Lows 43 to 48. Breezy. Northwest winds 10 to 20 mph with gusts to 30 mph. .THURSDAY...Sunny. Highs 74 to 79. Windy. Northwest winds 15 to 25 mph with gusts to 35 mph. .THURSDAY NIGHT...Increasing clouds. Lows 44 to 49. .FRIDAY...Sunny. Highs 78 to 83. .FRIDAY NIGHT...Clear. Lows 45 to 51. .SATURDAY...Sunny. Highs 85 to 90. .SATURDAY NIGHT...Decreasing clouds. Lows 50 to 55. .SUNDAY THROUGH MEMORIAL DAY...Mostly clear. Highs 86 to 92. Lows 51 to 56. && TEMPERATURE Boise 70 45 74 Mountain Home 72 40 76 $$ = IDZ016-200200- Western Magic Valley- 1236 PM MDT Tue May 19 2026 .REST OF TODAY...Sunny. Highs 64 to 69. West winds 10 to 15 mph. .TONIGHT...Decreasing clouds. Lows 38 to 43. West winds 10 to 15 mph in the evening, shifting to south after midnight. .WEDNESDAY...Mostly sunny. Highs 69 to 74. West winds 10 to 15 mph. Gusts to 25 mph in the afternoon. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then partly cloudy with a slight chance of rain showers after midnight. Chance of rain 20 percent. Lows 41 to 46. West winds 10 to 15 mph with gusts to 25 mph. .THURSDAY...Sunny. Highs 69 to 74. West winds 10 to 15 mph with gusts to 25 mph. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows 41 to 46. Highs 74 to 79. .FRIDAY NIGHT...Clear. Lows 43 to 48. .SATURDAY...Sunny. Highs 81 to 86. .SATURDAY NIGHT...Partly cloudy. Lows 47 to 53. .SUNDAY THROUGH MEMORIAL DAY...Mostly clear. Highs 84 to 89. Lows 48 to 54. Breezy. && TEMPERATURE Jerome 66 40 71 Twin Falls 65 42 70 $$ = IDZ029-200200- Owyhee Mountains- 1236 PM MDT Tue May 19 2026 .REST OF TODAY...Mostly sunny. Highs 61 to 66. .TONIGHT...Partly cloudy. Lows 37 to 47. .WEDNESDAY...Partly sunny. Highs 64 to 69. .WEDNESDAY NIGHT...Partly cloudy. Lows 37 to 47. .THURSDAY...Sunny. Highs 65 to 70. Breezy. .THURSDAY NIGHT...Partly cloudy. Lows 41 to 51. .FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs 70 to 76. Lows 44 to 53. .SATURDAY...Sunny. Highs 77 to 82. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows 48 to 57. .SUNDAY THROUGH MEMORIAL DAY...Mostly clear. Highs 76 to 84. Lows 48 to 57. $$ = IDZ015-200200- Southwest Highlands- 1236 PM MDT Tue May 19 2026 .REST OF TODAY...Mostly sunny. Highs 60 to 67. .TONIGHT...Partly cloudy in the evening, then clearing. Lows 35 to 41. .WEDNESDAY...Partly sunny. Highs 66 to 72. .WEDNESDAY NIGHT...Mostly cloudy. Lows 38 to 44. .THURSDAY...Sunny. Highs 66 to 73. Windy. Northwest winds around 25 mph in the afternoon. Gusts to 35 mph. .THURSDAY NIGHT...Increasing clouds. Lows 40 to 45. .FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs 71 to 78. Lows 42 to 47. .SATURDAY...Sunny. Highs 77 to 85. .SATURDAY NIGHT...Partly cloudy. Lows 45 to 52. .SUNDAY THROUGH MEMORIAL DAY...Mostly clear. Highs 80 to 88. Lows 46 to 53. Breezy. $$ = IDZ030-200200- Southern Twin Falls County- 1236 PM MDT Tue May 19 2026 .REST OF TODAY...Sunny. Highs 61 to 66. .TONIGHT...Partly cloudy in the evening, then clearing. Lows 36 to 42. .WEDNESDAY...Mostly sunny. Highs 66 to 71. .WEDNESDAY NIGHT...Mostly cloudy. A slight chance of rain showers after midnight. Chance of rain 20 percent. Lows 41 to 46. .THURSDAY...Sunny. Highs 66 to 71. Breezy. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows 40 to 45. Highs 72 to 77. .FRIDAY NIGHT AND SATURDAY...Mostly clear. Lows 43 to 48. Highs 79 to 84. .SATURDAY NIGHT...Partly cloudy. Lows 48 to 53. .SUNDAY...Sunny. Highs 82 to 87. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows 49 to 54. .MEMORIAL DAY...Partly cloudy. A slight chance of rain showers in the afternoon. Chance of rain 20 percent. Highs 82 to 87. Breezy. $$ = ORZ062-200200- Baker County- 1136 AM PDT Tue May 19 2026 .REST OF TODAY...Mostly sunny. Highs 63 to 70. Northwest winds up to 10 mph. .TONIGHT...Partly cloudy. Lows 35 to 45. Northwest winds up to 10 mph. .WEDNESDAY...Patchy fog in the morning. Mostly sunny. Highs 66 to 73. Light winds in the morning, becoming northwest 10 to 15 mph with gusts to 25 mph in the afternoon. .WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows 36 to 46. Breezy. Northwest winds 10 to 20 mph. Gusts to 35 mph in the evening. .THURSDAY...Sunny. Highs 69 to 76. Northwest winds 10 to 15 mph. Gusts to 25 mph in the afternoon. .THURSDAY NIGHT...Partly cloudy. Lows 39 to 50. .FRIDAY THROUGH SATURDAY...Mostly clear. Highs 74 to 84. Lows 42 to 52. .SATURDAY NIGHT...Partly cloudy. Lows 45 to 55. .SUNDAY...Sunny. Highs 79 to 87. .SUNDAY NIGHT AND MEMORIAL DAY...Partly cloudy. Lows 44 to 54. Highs 72 to 81. Breezy. && TEMPERATURE Baker City 67 36 69 $$ = ORZ061-200200- Harney County- 1136 AM PDT Tue May 19 2026 .REST OF TODAY...Sunny. Highs 63 to 69. West winds up to 10 mph with gusts to 20 mph. .TONIGHT...Partly cloudy. Lows 36 to 43. Northwest winds up to 10 mph with gusts to 20 mph. .WEDNESDAY...Partly sunny in the morning, then clearing. Highs 66 to 73. Northwest winds up to 10 mph. Gusts to 20 mph in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Lows 35 to 44. North winds 10 to 15 mph with gusts to 25 mph. .THURSDAY...Sunny. Highs 67 to 75. North winds up to 10 mph. .THURSDAY NIGHT...Partly cloudy in the evening, then clearing. Lows 38 to 46. .FRIDAY THROUGH SATURDAY...Mostly clear. Highs 72 to 82. Lows 41 to 50. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows 43 to 51. .SUNDAY...Sunny. Highs 77 to 85. .SUNDAY NIGHT AND MEMORIAL DAY...Partly cloudy. Lows 43 to 51. Highs 72 to 80. Breezy. && TEMPERATURE Burns 69 37 72 $$ = ORZ063-200200- Malheur County- 1236 PM MDT Tue May 19 2026 /1136 AM PDT Tue May 19 2026/ .REST OF TODAY...Mostly sunny. Highs 65 to 71. West winds up to 10 mph. .TONIGHT...Partly cloudy. Lows 36 to 46. North winds up to 10 mph. .WEDNESDAY...Mostly sunny. Highs 69 to 75. North winds up to 10 mph. Gusts to 20 mph in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Lows 38 to 48. Breezy. North winds 10 to 20 mph with gusts to 30 mph. .THURSDAY...Sunny. Highs 70 to 76. North winds 10 to 15 mph. .THURSDAY NIGHT...Partly cloudy. Lows 41 to 51. .FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs 75 to 81. Lows 44 to 52. .SATURDAY...Sunny. Highs 80 to 87. .SATURDAY NIGHT...Partly cloudy. Lows 47 to 56. .SUNDAY...Sunny. Highs 82 to 88. .SUNDAY NIGHT AND MEMORIAL DAY...Partly cloudy. Lows 47 to 56. Highs 78 to 86. Breezy. $$ =