Avon, Connecticut has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.4 °C (low) to 15.8 °C (high). Annual precipitation averages 1357.4 Millimeters. Avon is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.8 °C | 2.1 °C | 95.25 mm |
| February | -7.2 °C | 3.7 °C | 84.84 mm |
| March | -2.9 °C | 8.1 °C | 110.49 mm |
| April | 2.8 °C | 15.3 °C | 106.43 mm |
| May | 8.6 °C | 21.3 °C | 105.16 mm |
| June | 13.8 °C | 26.1 °C | 124.46 mm |
| July | 16.8 °C | 28.9 °C | 115.32 mm |
| August | 15.8 °C | 27.8 °C | 119.38 mm |
| September | 11.7 °C | 23.9 °C | 126.49 mm |
| October | 5.3 °C | 17.1 °C | 144.53 mm |
| November | 0.1 °C | 10.7 °C | 104.9 mm |
| December | -4.4 °C | 4.9 °C | 120.14 mm |
| Annual | 4.4 °C | 15.8 °C | 1357.39 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |