Browntown, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.1 °F (low) to 57.7 °F (high). Annual precipitation averages 37.8 Inches. Browntown is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 10.6 °F | 27.9 °F | 1.41 in. |
| February | 14.0 °F | 32.3 °F | 1.55 in. |
| March | 24.8 °F | 44.5 °F | 2.0 in. |
| April | 35.6 °F | 58.5 °F | 3.74 in. |
| May | 47.2 °F | 70.1 °F | 4.16 in. |
| June | 57.5 °F | 79.8 °F | 5.7 in. |
| July | 61.1 °F | 83.0 °F | 4.22 in. |
| August | 58.9 °F | 81.3 °F | 4.16 in. |
| September | 50.5 °F | 74.4 °F | 3.88 in. |
| October | 39.1 °F | 61.5 °F | 3.0 in. |
| November | 28.0 °F | 46.2 °F | 2.23 in. |
| December | 17.3 °F | 33.3 °F | 1.73 in. |
| Annual | 37.1 °F | 57.7 °F | 37.78 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |