Beloit, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.3 °F (low) to 57.7 °F (high). Annual precipitation averages 37.4 Inches. Beloit 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 | 12.4 °F | 28.3 °F | 1.6 in. |
| February | 15.5 °F | 32.3 °F | 1.56 in. |
| March | 25.8 °F | 44.5 °F | 2.09 in. |
| April | 36.6 °F | 57.7 °F | 3.68 in. |
| May | 48.2 °F | 69.5 °F | 4.32 in. |
| June | 58.2 °F | 79.4 °F | 5.51 in. |
| July | 62.2 °F | 82.9 °F | 3.67 in. |
| August | 60.4 °F | 81.4 °F | 4.12 in. |
| September | 52.0 °F | 74.7 °F | 3.79 in. |
| October | 40.4 °F | 61.6 °F | 2.87 in. |
| November | 29.2 °F | 46.4 °F | 2.31 in. |
| December | 19.1 °F | 33.9 °F | 1.92 in. |
| Annual | 38.3 °F | 57.7 °F | 37.44 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |