Warren, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.1 °C (low) to 11 °C (high). Annual precipitation averages 1286.5 Millimeters. Warren is located in USDA Plant Hardiness Zone 5a. 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 | -13.8 °C | -3.8 °C | 84.33 mm |
| February | -13.3 °C | -2.1 °C | 70.61 mm |
| March | -8.3 °C | 2.7 °C | 91.44 mm |
| April | -1.5 °C | 10.2 °C | 103.89 mm |
| May | 5.3 °C | 17.6 °C | 105.16 mm |
| June | 10.1 °C | 21.9 °C | 136.65 mm |
| July | 12.7 °C | 24.6 °C | 135.89 mm |
| August | 11.7 °C | 23.7 °C | 120.9 mm |
| September | 7.6 °C | 19.7 °C | 104.65 mm |
| October | 1.9 °C | 12.5 °C | 133.1 mm |
| November | -3.7 °C | 5.4 °C | 93.22 mm |
| December | -9.6 °C | -0.6 °C | 106.68 mm |
| Annual | -0.1 °C | 11 °C | 1286.52 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 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |