Edgewood, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.4 °F (low) to 64.7 °F (high). Annual precipitation averages 44.5 Inches. Edgewood 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 21.5 °F | 37.6 °F | 3.02 in. |
| February | 24.6 °F | 42.4 °F | 2.48 in. |
| March | 33.5 °F | 53.2 °F | 3.46 in. |
| April | 43.8 °F | 65.6 °F | 4.77 in. |
| May | 54.6 °F | 75.3 °F | 4.95 in. |
| June | 63.6 °F | 84.1 °F | 4.88 in. |
| July | 66.5 °F | 87.2 °F | 4.21 in. |
| August | 64.1 °F | 86.1 °F | 3.28 in. |
| September | 55.8 °F | 80.2 °F | 3.24 in. |
| October | 44.6 °F | 68.4 °F | 3.43 in. |
| November | 34.4 °F | 53.7 °F | 3.82 in. |
| December | 26.3 °F | 42.0 °F | 2.92 in. |
| Annual | 44.4 °F | 64.7 °F | 44.46 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |