Channel Lake, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.2 °F (low) to 57.2 °F (high). Annual precipitation averages 37.7 Inches. Channel Lake 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 | 13.2 °F | 28.9 °F | 1.89 in. |
| February | 16.1 °F | 32.6 °F | 1.87 in. |
| March | 25.5 °F | 43.5 °F | 2.25 in. |
| April | 35.9 °F | 56.6 °F | 3.87 in. |
| May | 46.6 °F | 68.3 °F | 4.42 in. |
| June | 56.8 °F | 78.0 °F | 4.71 in. |
| July | 61.5 °F | 82.3 °F | 3.72 in. |
| August | 60.0 °F | 80.7 °F | 3.7 in. |
| September | 52.3 °F | 74.0 °F | 3.66 in. |
| October | 40.7 °F | 60.9 °F | 3.12 in. |
| November | 30.0 °F | 46.5 °F | 2.41 in. |
| December | 19.7 °F | 34.2 °F | 2.11 in. |
| Annual | 38.2 °F | 57.2 °F | 37.73 in. |
| 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 : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |