Dougherty, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.4 °F (low) to 56.3 °F (high). Annual precipitation averages 36.8 Inches. Dougherty 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 | 8.1 °F | 24.9 °F | 0.96 in. |
| February | 12.1 °F | 29.5 °F | 1.1 in. |
| March | 24.1 °F | 42.3 °F | 1.95 in. |
| April | 35.5 °F | 57.6 °F | 3.91 in. |
| May | 48.0 °F | 69.6 °F | 5.15 in. |
| June | 58.6 °F | 79.4 °F | 5.87 in. |
| July | 62.0 °F | 82.4 °F | 4.49 in. |
| August | 59.3 °F | 80.3 °F | 4.21 in. |
| September | 50.5 °F | 74.4 °F | 3.4 in. |
| October | 38.2 °F | 60.9 °F | 2.65 in. |
| November | 25.9 °F | 44.2 °F | 1.76 in. |
| December | 14.9 °F | 30.6 °F | 1.39 in. |
| Annual | 36.4 °F | 56.3 °F | 36.84 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 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |