Odell, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41 °F (low) to 61 °F (high). Annual precipitation averages 37.4 Inches. Odell is located in USDA Plant Hardiness Zone 6a. 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 | 16.3 °F | 32.1 °F | 2.02 in. |
| February | 19.5 °F | 36.8 °F | 1.77 in. |
| March | 29.1 °F | 49.2 °F | 2.51 in. |
| April | 39.5 °F | 62.0 °F | 3.57 in. |
| May | 51.3 °F | 73.1 °F | 4.55 in. |
| June | 60.9 °F | 81.8 °F | 4.32 in. |
| July | 64.1 °F | 84.4 °F | 4.05 in. |
| August | 61.8 °F | 82.7 °F | 3.6 in. |
| September | 53.4 °F | 77.8 °F | 3.28 in. |
| October | 42.2 °F | 64.9 °F | 3.12 in. |
| November | 31.5 °F | 50.1 °F | 2.6 in. |
| December | 21.8 °F | 37.3 °F | 2.04 in. |
| Annual | 41 °F | 61 °F | 37.43 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 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |