Cherry Valley, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.8 °C (low) to 14.6 °C (high). Annual precipitation averages 962.4 Millimeters. Cherry Valley 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 | -10.7 °C | -1.9 °C | 40.64 mm |
| February | -8.9 °C | 0.3 °C | 40.89 mm |
| March | -3.1 °C | 7.3 °C | 53.59 mm |
| April | 2.9 °C | 14.8 °C | 94.49 mm |
| May | 9.4 °C | 21.3 °C | 113.79 mm |
| June | 15 °C | 26.7 °C | 141.48 mm |
| July | 17.1 °C | 28.4 °C | 99.31 mm |
| August | 16.1 °C | 27.6 °C | 105.16 mm |
| September | 11.4 °C | 24 °C | 89.15 mm |
| October | 4.7 °C | 16.8 °C | 72.9 mm |
| November | -1.4 °C | 8.3 °C | 59.44 mm |
| December | -7.2 °C | 1.2 °C | 51.56 mm |
| Annual | 3.8 °C | 14.6 °C | 962.4 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |