Hume, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.6 °F (low) to 62.6 °F (high). Annual precipitation averages 40.6 Inches. Hume 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 | 18.7 °F | 34.6 °F | 2.49 in. |
| February | 21.9 °F | 39.1 °F | 2.08 in. |
| March | 31.0 °F | 50.8 °F | 2.86 in. |
| April | 41.6 °F | 63.7 °F | 4.4 in. |
| May | 52.9 °F | 74.3 °F | 4.4 in. |
| June | 62.0 °F | 82.6 °F | 4.74 in. |
| July | 64.7 °F | 85.0 °F | 4.1 in. |
| August | 62.4 °F | 83.8 °F | 3.05 in. |
| September | 54.8 °F | 78.9 °F | 3.05 in. |
| October | 43.4 °F | 66.6 °F | 3.51 in. |
| November | 32.9 °F | 51.7 °F | 3.41 in. |
| December | 24.4 °F | 39.5 °F | 2.55 in. |
| Annual | 42.6 °F | 62.6 °F | 40.64 in. |
| 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 : -10°F to -5°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 |