Readsboro, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.5 °C (low) to 12.4 °C (high). Annual precipitation averages 1435.9 Millimeters. Readsboro is located in USDA Plant Hardiness Zone 5b. 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 | -12 °C | -1.4 °C | 96.52 mm |
| February | -11.9 °C | 0 °C | 92.2 mm |
| March | -7.3 °C | 4.3 °C | 111.76 mm |
| April | -0.9 °C | 11.4 °C | 114.81 mm |
| May | 5.2 °C | 18.1 °C | 115.82 mm |
| June | 10.2 °C | 23.1 °C | 143.76 mm |
| July | 12.8 °C | 25.6 °C | 120.14 mm |
| August | 11.7 °C | 24.8 °C | 115.06 mm |
| September | 7.6 °C | 21 °C | 136.14 mm |
| October | 1.8 °C | 13.9 °C | 147.83 mm |
| November | -3 °C | 7.2 °C | 110.49 mm |
| December | -8.2 °C | 1.3 °C | 131.32 mm |
| Annual | 0.5 °C | 12.4 °C | 1435.85 mm |
| 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 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 |