Belmond, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.2 °F (low) to 56.4 °F (high). Annual precipitation averages 35.2 Inches. Belmond is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 7.8 °F | 25.0 °F | 0.84 in. |
| February | 11.9 °F | 29.6 °F | 1.0 in. |
| March | 24.0 °F | 42.3 °F | 2.05 in. |
| April | 35.2 °F | 57.6 °F | 3.86 in. |
| May | 48.0 °F | 69.6 °F | 5.01 in. |
| June | 58.7 °F | 79.7 °F | 5.58 in. |
| July | 61.9 °F | 82.5 °F | 4.32 in. |
| August | 59.0 °F | 80.3 °F | 4.1 in. |
| September | 50.0 °F | 74.5 °F | 3.11 in. |
| October | 37.6 °F | 61.1 °F | 2.37 in. |
| November | 25.5 °F | 44.3 °F | 1.69 in. |
| December | 14.3 °F | 30.6 °F | 1.3 in. |
| Annual | 36.2 °F | 56.4 °F | 35.23 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 |