Somers, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.2 °F (low) to 56.5 °F (high). Annual precipitation averages 35.9 Inches. Somers 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.4 °F | 29.4 °F | 1.85 in. |
| February | 17.1 °F | 32.8 °F | 1.75 in. |
| March | 26.3 °F | 42.7 °F | 2.21 in. |
| April | 36.6 °F | 54.9 °F | 4.03 in. |
| May | 47.0 °F | 66.1 °F | 4.11 in. |
| June | 57.1 °F | 76.0 °F | 4.12 in. |
| July | 62.5 °F | 81.1 °F | 3.4 in. |
| August | 61.4 °F | 79.8 °F | 3.49 in. |
| September | 53.8 °F | 73.4 °F | 3.48 in. |
| October | 42.0 °F | 60.4 °F | 3.09 in. |
| November | 31.0 °F | 47.0 °F | 2.37 in. |
| December | 20.7 °F | 34.9 °F | 1.97 in. |
| Annual | 39.2 °F | 56.5 °F | 35.87 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 |