Beecher, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41 °F (low) to 60 °F (high). Annual precipitation averages 40.5 Inches. Beecher 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 | 16.5 °F | 32.0 °F | 2.31 in. |
| February | 19.3 °F | 36.0 °F | 2.09 in. |
| March | 28.6 °F | 47.2 °F | 2.37 in. |
| April | 39.1 °F | 60.0 °F | 3.77 in. |
| May | 50.0 °F | 70.8 °F | 4.49 in. |
| June | 59.9 °F | 80.7 °F | 4.79 in. |
| July | 64.4 °F | 84.2 °F | 4.57 in. |
| August | 62.6 °F | 82.5 °F | 4.23 in. |
| September | 54.9 °F | 76.3 °F | 3.4 in. |
| October | 42.9 °F | 63.4 °F | 3.51 in. |
| November | 32.3 °F | 49.4 °F | 2.75 in. |
| December | 22.0 °F | 37.0 °F | 2.24 in. |
| Annual | 41 °F | 60 °F | 40.52 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |