Hume, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.9 °C (low) to 17 °C (high). Annual precipitation averages 1032.3 Millimeters. 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 | -7.4 °C | 1.4 °C | 63.25 mm |
| February | -5.6 °C | 3.9 °C | 52.83 mm |
| March | -0.6 °C | 10.4 °C | 72.64 mm |
| April | 5.3 °C | 17.6 °C | 111.76 mm |
| May | 11.6 °C | 23.5 °C | 111.76 mm |
| June | 16.7 °C | 28.1 °C | 120.4 mm |
| July | 18.2 °C | 29.4 °C | 104.14 mm |
| August | 16.9 °C | 28.8 °C | 77.47 mm |
| September | 12.7 °C | 26.1 °C | 77.47 mm |
| October | 6.3 °C | 19.2 °C | 89.15 mm |
| November | 0.5 °C | 10.9 °C | 86.61 mm |
| December | -4.2 °C | 4.2 °C | 64.77 mm |
| Annual | 5.9 °C | 17 °C | 1032.25 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |