Estherville, 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 55.7 °F (high). Annual precipitation averages 31.1 Inches. Estherville 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 | 7.1 °F | 24.0 °F | 0.84 in. |
| February | 10.9 °F | 28.3 °F | 0.81 in. |
| March | 23.0 °F | 40.9 °F | 1.66 in. |
| April | 35.1 °F | 56.8 °F | 3.33 in. |
| May | 47.7 °F | 69.0 °F | 4.55 in. |
| June | 58.7 °F | 79.2 °F | 4.87 in. |
| July | 62.2 °F | 82.5 °F | 3.71 in. |
| August | 59.3 °F | 79.8 °F | 3.64 in. |
| September | 50.8 °F | 74.2 °F | 3.13 in. |
| October | 37.8 °F | 60.2 °F | 2.42 in. |
| November | 24.8 °F | 43.6 °F | 1.21 in. |
| December | 13.2 °F | 29.3 °F | 0.94 in. |
| Annual | 35.9 °F | 55.7 °F | 31.11 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 |