Moscow, Idaho has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 36.9 °F (low) to 58.3 °F (high). Annual precipitation averages 23.6 Inches. Moscow is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.3 °F | 37.0 °F | 2.98 in. |
| February | 27.3 °F | 41.1 °F | 2.32 in. |
| March | 31.1 °F | 48.3 °F | 2.5 in. |
| April | 35.5 °F | 56.0 °F | 2.23 in. |
| May | 41.4 °F | 65.2 °F | 2.27 in. |
| June | 45.7 °F | 71.1 °F | 1.52 in. |
| July | 48.9 °F | 82.7 °F | 0.47 in. |
| August | 49.0 °F | 84.0 °F | 0.65 in. |
| September | 43.7 °F | 74.4 °F | 0.79 in. |
| October | 36.8 °F | 59.3 °F | 1.72 in. |
| November | 31.2 °F | 44.6 °F | 2.88 in. |
| December | 25.6 °F | 36.0 °F | 3.29 in. |
| Annual | 36.9 °F | 58.3 °F | 23.62 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |