Barronett, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.2 °C (low) to 11.1 °C (high). Annual precipitation averages 842.5 Millimeters. Barronett is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.9 °C | -6.2 °C | 23.88 mm |
| February | -14.4 °C | -3.3 °C | 24.13 mm |
| March | -7.7 °C | 3.6 °C | 41.4 mm |
| April | -0.2 °C | 11.1 °C | 72.9 mm |
| May | 6.5 °C | 18.7 °C | 98.81 mm |
| June | 12 °C | 23.8 °C | 113.28 mm |
| July | 14.2 °C | 26.2 °C | 109.22 mm |
| August | 13 °C | 25.1 °C | 107.7 mm |
| September | 8.8 °C | 20.3 °C | 91.44 mm |
| October | 2.4 °C | 12.7 °C | 81.53 mm |
| November | -4.6 °C | 4 °C | 45.21 mm |
| December | -11.6 °C | -3.3 °C | 33.02 mm |
| Annual | 0.2 °C | 11.1 °C | 842.52 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |