Moscow, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.9 °C (low) to 15.7 °C (high). Annual precipitation averages 962.7 Millimeters. Moscow is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.8 °C | -0.8 °C | 34.54 mm |
| February | -7.9 °C | 1.7 °C | 41.66 mm |
| March | -1.8 °C | 8.8 °C | 60.71 mm |
| April | 4.3 °C | 16.4 °C | 93.22 mm |
| May | 10.9 °C | 22.4 °C | 122.68 mm |
| June | 16.4 °C | 27.6 °C | 131.06 mm |
| July | 18.4 °C | 29.4 °C | 108.2 mm |
| August | 17.1 °C | 28.3 °C | 103.12 mm |
| September | 12.5 °C | 25.1 °C | 90.93 mm |
| October | 5.9 °C | 17.8 °C | 74.17 mm |
| November | -0.7 °C | 9.4 °C | 55.63 mm |
| December | -6.6 °C | 2.1 °C | 46.74 mm |
| Annual | 4.9 °C | 15.7 °C | 962.66 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |