Buckley, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.9 °F (low) to 61.5 °F (high). Annual precipitation averages 38.6 Inches. Buckley 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 | 16.7 °F | 32.7 °F | 2.2 in. |
| February | 19.7 °F | 37.3 °F | 1.89 in. |
| March | 29.1 °F | 49.1 °F | 2.61 in. |
| April | 39.4 °F | 62.7 °F | 3.82 in. |
| May | 51.0 °F | 73.6 °F | 4.44 in. |
| June | 60.6 °F | 82.2 °F | 4.54 in. |
| July | 63.6 °F | 84.8 °F | 4.25 in. |
| August | 61.3 °F | 83.3 °F | 3.56 in. |
| September | 53.4 °F | 78.7 °F | 3.03 in. |
| October | 42.2 °F | 65.8 °F | 3.3 in. |
| November | 31.6 °F | 50.4 °F | 2.76 in. |
| December | 22.1 °F | 37.7 °F | 2.16 in. |
| Annual | 40.9 °F | 61.5 °F | 38.56 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 |