Hospers, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 35.9 °F (low) to 57.5 °F (high). Annual precipitation averages 29.8 Inches. Hospers 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 | 7.9 °F | 26.2 °F | 0.75 in. |
| February | 12.1 °F | 31.0 °F | 0.85 in. |
| March | 23.6 °F | 43.9 °F | 1.73 in. |
| April | 34.6 °F | 58.7 °F | 3.14 in. |
| May | 47.5 °F | 70.8 °F | 4.05 in. |
| June | 58.6 °F | 80.7 °F | 4.47 in. |
| July | 61.9 °F | 83.8 °F | 3.45 in. |
| August | 59.4 °F | 81.5 °F | 3.47 in. |
| September | 50.2 °F | 75.4 °F | 3.17 in. |
| October | 37.4 °F | 62.1 °F | 2.35 in. |
| November | 24.4 °F | 45.0 °F | 1.41 in. |
| December | 13.7 °F | 31.1 °F | 0.99 in. |
| Annual | 35.9 °F | 57.5 °F | 29.83 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |