Wolcott, Connecticut has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.1 °C (low) to 15.6 °C (high). Annual precipitation averages 1411.2 Millimeters. Wolcott is located in USDA Plant Hardiness Zone 6b. 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 | -8 °C | 1.8 °C | 107.19 mm |
| February | -7.3 °C | 3.4 °C | 91.69 mm |
| March | -3.3 °C | 7.8 °C | 131.57 mm |
| April | 2.5 °C | 15.2 °C | 113.03 mm |
| May | 8.2 °C | 21.3 °C | 111.76 mm |
| June | 13.3 °C | 26 °C | 114.55 mm |
| July | 16.2 °C | 28.6 °C | 117.86 mm |
| August | 15.4 °C | 27.6 °C | 110.49 mm |
| September | 11.4 °C | 23.6 °C | 126.49 mm |
| October | 5.2 °C | 17 °C | 148.84 mm |
| November | 0 °C | 10.4 °C | 112.27 mm |
| December | -4.7 °C | 4.5 °C | 125.48 mm |
| Annual | 4.1 °C | 15.6 °C | 1411.22 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |