Gages Lake, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.8 °F (low) to 57.5 °F (high). Annual precipitation averages 37.8 Inches. Gages 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.0 °F | 29.8 °F | 1.98 in. |
| February | 17.7 °F | 33.5 °F | 2.0 in. |
| March | 26.9 °F | 44.3 °F | 2.29 in. |
| April | 37.3 °F | 56.6 °F | 3.9 in. |
| May | 47.9 °F | 67.9 °F | 4.38 in. |
| June | 58.0 °F | 77.9 °F | 4.5 in. |
| July | 63.3 °F | 82.4 °F | 3.72 in. |
| August | 62.0 °F | 80.7 °F | 3.65 in. |
| September | 54.3 °F | 73.9 °F | 3.55 in. |
| October | 42.6 °F | 61.1 °F | 3.22 in. |
| November | 31.4 °F | 47.2 °F | 2.45 in. |
| December | 21.1 °F | 35.2 °F | 2.16 in. |
| Annual | 39.8 °F | 57.5 °F | 37.8 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 |