Townshend, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.5 °C (low) to 13.6 °C (high). Annual precipitation averages 1262.4 Millimeters. Townshend is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.7 °C | -0.9 °C | 91.69 mm |
| February | -11.1 °C | 0.8 °C | 77.98 mm |
| March | -6.2 °C | 5.4 °C | 100.08 mm |
| April | 0.1 °C | 12.7 °C | 101.85 mm |
| May | 6.3 °C | 19.7 °C | 103.38 mm |
| June | 11.6 °C | 24.5 °C | 111.25 mm |
| July | 14.4 °C | 27.3 °C | 106.43 mm |
| August | 13.3 °C | 26.4 °C | 106.17 mm |
| September | 8.9 °C | 22.4 °C | 108.71 mm |
| October | 2.6 °C | 14.9 °C | 140.72 mm |
| November | -2.3 °C | 8.2 °C | 102.11 mm |
| December | -7.6 °C | 2 °C | 112.01 mm |
| Annual | 1.5 °C | 13.6 °C | 1262.38 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |