Ridge Farm, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.7 °C (low) to 16.8 °C (high). Annual precipitation averages 1056.4 Millimeters. Ridge Farm is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.7 °C | 1.2 °C | 66.29 mm |
| February | -5.8 °C | 3.8 °C | 56.9 mm |
| March | -0.8 °C | 10.3 °C | 75.95 mm |
| April | 5.1 °C | 17.4 °C | 111.25 mm |
| May | 11.5 °C | 23.4 °C | 115.57 mm |
| June | 16.7 °C | 28 °C | 123.7 mm |
| July | 17.9 °C | 29.3 °C | 107.44 mm |
| August | 16.7 °C | 28.6 °C | 80.01 mm |
| September | 12.5 °C | 25.9 °C | 77.72 mm |
| October | 6.2 °C | 19.1 °C | 88.14 mm |
| November | 0.3 °C | 10.8 °C | 86.61 mm |
| December | -4.6 °C | 3.9 °C | 66.8 mm |
| Annual | 5.7 °C | 16.8 °C | 1056.38 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |