Spragueville, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.7 °C (low) to 14.9 °C (high). Annual precipitation averages 956.3 Millimeters. Spragueville 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.1 °C | -1.7 °C | 35.81 mm |
| February | -9.1 °C | 0.8 °C | 41.4 mm |
| March | -3 °C | 7.9 °C | 57.66 mm |
| April | 3.1 °C | 15.4 °C | 94.49 mm |
| May | 9.6 °C | 21.8 °C | 111.76 mm |
| June | 15.2 °C | 27.1 °C | 133.6 mm |
| July | 17.1 °C | 28.7 °C | 111.51 mm |
| August | 15.8 °C | 27.7 °C | 102.87 mm |
| September | 11.1 °C | 24.3 °C | 90.68 mm |
| October | 4.7 °C | 17.1 °C | 74.42 mm |
| November | -1.7 °C | 8.6 °C | 56.13 mm |
| December | -7.5 °C | 1.4 °C | 45.97 mm |
| Annual | 3.7 °C | 14.9 °C | 956.3 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 5a : -28.9°C to -26.1°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 |