Warsaw, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.2 °C (low) to 19.4 °C (high). Annual precipitation averages 1113.8 Millimeters. Warsaw is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.2 °C | 5.3 °C | 48.01 mm |
| February | -4.3 °C | 8.2 °C | 54.61 mm |
| March | 0.9 °C | 13.9 °C | 77.98 mm |
| April | 6.3 °C | 19.9 °C | 117.35 mm |
| May | 12.4 °C | 24.4 °C | 139.7 mm |
| June | 17.8 °C | 29.1 °C | 124.46 mm |
| July | 20.2 °C | 31.8 °C | 115.82 mm |
| August | 19.1 °C | 31.3 °C | 101.6 mm |
| September | 14.2 °C | 26.9 °C | 110.49 mm |
| October | 7.4 °C | 20.9 °C | 85.85 mm |
| November | 1.4 °C | 13.6 °C | 80.52 mm |
| December | -3.4 °C | 7.5 °C | 57.4 mm |
| Annual | 7.2 °C | 19.4 °C | 1113.79 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |