Idaho weather by month
Average temperatures and rainfall across Idaho, based on 30 years of climate data.
Monthly climate (Boise)
| Month | High / Low | Rainfall | Wet days |
|---|---|---|---|
| Jan | 40° / 27° | 1.8 in | 9.5 |
| Feb | 46° / 30° | 1.2 in | 7.7 |
| Mar | 55° / 36° | 1.4 in | 8.9 |
| Apr | 63° / 41° | 1.2 in | 7.2 |
| May | 72° / 48° | 1.2 in | 5.9 |
| Jun | 81° / 55° | 0.6 in | 3.2 |
| Jul | 92° / 63° | 0.1 in | 0.9 |
| Aug | 91° / 62° | 0.1 in | 0.7 |
| Sep | 80° / 54° | 0.4 in | 2.2 |
| Oct | 65° / 43° | 0.9 in | 4.3 |
| Nov | 49° / 33° | 1.4 in | 7.9 |
| Dec | 39° / 27° | 2.0 in | 10.1 |
Cities in Idaho
- 1Boise32°–79°236kSep
- 2Meridian34°–79°91kSep
- 3Nampa34°–79°90kSep
- 4Idaho Falls25°–73°59kSep
- 5Pocatello25°–72°54kSep
- 6Caldwell34°–79°52kSep
- 7Coeur d'Alene28°–70°49kAug
- 8Twin Falls30°–77°47kSep
- 9Lewiston32°–73°33kSep
- 10Lewiston Orchards32°–73°31kSep
- 11Post Falls30°–70°30kSep
- 12Rexburg23°–72°28kSep
- 13Moscow30°–72°25kSep
- 14Eagle30°–75°24kSep
- 15Conda19°–64°21kAug
- 16Kuna34°–79°17kSep