Soldier, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.3 °C (low) to 15.6 °C (high). Annual precipitation averages 818.4 Millimeters. Soldier is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.8 °C | -1.3 °C | 17.27 mm |
| February | -9.6 °C | 1.5 °C | 21.34 mm |
| March | -3.4 °C | 8.9 °C | 42.16 mm |
| April | 2.6 °C | 16.4 °C | 88.65 mm |
| May | 9.5 °C | 22.4 °C | 116.33 mm |
| June | 15.5 °C | 27.8 °C | 122.43 mm |
| July | 17.6 °C | 29.7 °C | 100.33 mm |
| August | 16 °C | 28.4 °C | 107.95 mm |
| September | 10.9 °C | 25.1 °C | 79.5 mm |
| October | 3.9 °C | 17.9 °C | 58.67 mm |
| November | -3.3 °C | 8.9 °C | 35.56 mm |
| December | -8.9 °C | 1.3 °C | 28.19 mm |
| Annual | 3.3 °C | 15.6 °C | 818.38 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |