Worcester, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.6 °F (low) to 54.1 °F (high). Annual precipitation averages 45.3 Inches. Worcester is located in USDA Plant Hardiness Zone 4b. 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 | 6.5 °F | 26.4 °F | 3.02 in. |
| February | 7.5 °F | 29.7 °F | 2.64 in. |
| March | 17.4 °F | 38.5 °F | 3.08 in. |
| April | 30.5 °F | 52.4 °F | 3.7 in. |
| May | 42.2 °F | 66.3 °F | 3.93 in. |
| June | 51.5 °F | 74.8 °F | 4.7 in. |
| July | 56.4 °F | 79.7 °F | 4.97 in. |
| August | 54.4 °F | 78.3 °F | 4.23 in. |
| September | 47.1 °F | 70.9 °F | 3.55 in. |
| October | 36.3 °F | 56.8 °F | 4.32 in. |
| November | 26.5 °F | 43.8 °F | 3.34 in. |
| December | 15.3 °F | 32.1 °F | 3.79 in. |
| Annual | 32.6 °F | 54.1 °F | 45.27 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |