| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Sep.11 - Sep. 20 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | Dsb - Humid Continental Climate - Dry Cool Summer |
| Ecoregion: | 10h - Palouse Hills |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 83843 - Moscow, ID | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 23 | 27 | 31 | 35 | 41 | 45 | 48 | 49 | 42 | 36 | 30 | 24 | 36 |
| Avg Max Temp (°F) | 35 | 42 | 50 | 57 | 66 | 73 | 82 | 84 | 74 | 60 | 43 | 35 | 58 |
| Avg Precip (In.) | 3.01 | 2.52 | 2.53 | 2.4 | 2.55 | 1.81 | 1.1 | 1.14 | 1.27 | 1.97 | 3.52 | 3.18 | 26.99 |