Belmond, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.3 °C (low) to 13.6 °C (high). Annual precipitation averages 894.8 Millimeters. 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 | -13.4 °C | -3.9 °C | 21.34 mm |
| February | -11.2 °C | -1.3 °C | 25.4 mm |
| March | -4.4 °C | 5.7 °C | 52.07 mm |
| April | 1.8 °C | 14.2 °C | 98.04 mm |
| May | 8.9 °C | 20.9 °C | 127.25 mm |
| June | 14.8 °C | 26.5 °C | 141.73 mm |
| July | 16.6 °C | 28.1 °C | 109.73 mm |
| August | 15 °C | 26.8 °C | 104.14 mm |
| September | 10 °C | 23.6 °C | 78.99 mm |
| October | 3.1 °C | 16.2 °C | 60.2 mm |
| November | -3.6 °C | 6.8 °C | 42.93 mm |
| December | -9.8 °C | -0.8 °C | 33.02 mm |
| Annual | 2.3 °C | 13.6 °C | 894.84 mm |
| 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 : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |