Townsend, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 30.2 °F (low) to 52.4 °F (high). Annual precipitation averages 32.3 Inches. Townsend is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.4 °F | 22.9 °F | 1.25 in. |
| February | 5.6 °F | 27.3 °F | 1.14 in. |
| March | 15.7 °F | 38.7 °F | 1.6 in. |
| April | 28.1 °F | 51.8 °F | 2.93 in. |
| May | 40.3 °F | 65.8 °F | 3.41 in. |
| June | 50.5 °F | 74.9 °F | 4.16 in. |
| July | 54.4 °F | 78.9 °F | 4.01 in. |
| August | 52.6 °F | 76.9 °F | 3.42 in. |
| September | 44.9 °F | 68.9 °F | 3.61 in. |
| October | 33.5 °F | 55.0 °F | 3.36 in. |
| November | 22.8 °F | 40.0 °F | 1.98 in. |
| December | 11.0 °F | 27.9 °F | 1.44 in. |
| Annual | 30.2 °F | 52.4 °F | 32.31 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |