Chenoa, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41 °F (low) to 61.4 °F (high). Annual precipitation averages 36.4 Inches. Chenoa 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 | 16.1 °F | 32.3 °F | 2.07 in. |
| February | 19.4 °F | 37.0 °F | 1.74 in. |
| March | 29.0 °F | 49.3 °F | 2.54 in. |
| April | 39.6 °F | 62.8 °F | 3.58 in. |
| May | 51.3 °F | 73.9 °F | 4.38 in. |
| June | 60.9 °F | 82.3 °F | 3.88 in. |
| July | 64.1 °F | 85.1 °F | 3.84 in. |
| August | 61.8 °F | 83.3 °F | 3.29 in. |
| September | 53.7 °F | 78.2 °F | 3.25 in. |
| October | 42.5 °F | 65.5 °F | 3.26 in. |
| November | 31.6 °F | 50.1 °F | 2.61 in. |
| December | 21.8 °F | 37.5 °F | 1.95 in. |
| Annual | 41 °F | 61.4 °F | 36.39 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |