Edgerton, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.8 °F (low) to 57.2 °F (high). Annual precipitation averages 37.6 Inches. Edgerton is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 11.6 °F | 27.7 °F | 1.58 in. |
| February | 14.5 °F | 31.6 °F | 1.66 in. |
| March | 25.2 °F | 43.8 °F | 2.12 in. |
| April | 36.1 °F | 57.3 °F | 3.77 in. |
| May | 47.8 °F | 69.4 °F | 4.22 in. |
| June | 57.7 °F | 79.1 °F | 5.35 in. |
| July | 61.8 °F | 82.7 °F | 3.9 in. |
| August | 59.9 °F | 80.9 °F | 4.3 in. |
| September | 51.5 °F | 74.2 °F | 3.6 in. |
| October | 39.8 °F | 60.9 °F | 2.92 in. |
| November | 28.9 °F | 45.9 °F | 2.32 in. |
| December | 18.3 °F | 33.2 °F | 1.88 in. |
| Annual | 37.8 °F | 57.2 °F | 37.62 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |