Rhodes, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.5 °C (low) to 14.6 °C (high). Annual precipitation averages 934.2 Millimeters. Rhodes is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.8 °C | -2.1 °C | 24.89 mm |
| February | -9.5 °C | 0.5 °C | 29.21 mm |
| March | -3.3 °C | 7.7 °C | 52.32 mm |
| April | 2.8 °C | 15.4 °C | 95.76 mm |
| May | 9.8 °C | 21.4 °C | 128.52 mm |
| June | 15.8 °C | 26.7 °C | 139.95 mm |
| July | 17.7 °C | 28.6 °C | 111.51 mm |
| August | 16.3 °C | 27.4 °C | 111.25 mm |
| September | 11.2 °C | 24.2 °C | 89.15 mm |
| October | 4.3 °C | 16.7 °C | 66.29 mm |
| November | -2.5 °C | 8.3 °C | 48.77 mm |
| December | -8.3 °C | 0.9 °C | 36.58 mm |
| Annual | 3.5 °C | 14.6 °C | 934.2 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |