Searsboro, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4 °C (low) to 15.2 °C (high). Annual precipitation averages 949.7 Millimeters. Searsboro is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.1 °C | -1.5 °C | 27.18 mm |
| February | -9.1 °C | 1.1 °C | 34.8 mm |
| March | -3 °C | 8.4 °C | 53.85 mm |
| April | 3.4 °C | 15.9 °C | 97.28 mm |
| May | 10.3 °C | 21.8 °C | 125.48 mm |
| June | 16.1 °C | 27.2 °C | 137.16 mm |
| July | 17.8 °C | 29.2 °C | 109.73 mm |
| August | 16.6 °C | 28.1 °C | 111.25 mm |
| September | 11.6 °C | 24.5 °C | 90.93 mm |
| October | 4.7 °C | 17.4 °C | 71.12 mm |
| November | -1.8 °C | 8.7 °C | 52.83 mm |
| December | -7.7 °C | 1.6 °C | 38.1 mm |
| Annual | 4 °C | 15.2 °C | 949.71 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |