Damiansville, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.7 °C (low) to 18.9 °C (high). Annual precipitation averages 1047.8 Millimeters. Damiansville is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.3 °C | 4.2 °C | 67.82 mm |
| February | -3.6 °C | 7.2 °C | 56.9 mm |
| March | 1.4 °C | 12.9 °C | 80.52 mm |
| April | 7.4 °C | 19.5 °C | 117.35 mm |
| May | 13.4 °C | 24.5 °C | 119.89 mm |
| June | 18.3 °C | 29.4 °C | 117.86 mm |
| July | 20.3 °C | 31.3 °C | 96.01 mm |
| August | 19.2 °C | 30.8 °C | 76.45 mm |
| September | 14.3 °C | 27.1 °C | 80.01 mm |
| October | 7.8 °C | 20.7 °C | 75.18 mm |
| November | 1.8 °C | 12.8 °C | 91.69 mm |
| December | -2.9 °C | 6.7 °C | 68.07 mm |
| Annual | 7.7 °C | 18.9 °C | 1047.75 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |