Jamaica, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.2 °F (low) to 56.1 °F (high). Annual precipitation averages 49.1 Inches. Jamaica 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 | 10.3 °F | 29.8 °F | 3.82 in. |
| February | 11.3 °F | 33.0 °F | 3.06 in. |
| March | 20.0 °F | 41.2 °F | 4.15 in. |
| April | 31.7 °F | 54.4 °F | 4.27 in. |
| May | 43.1 °F | 67.2 °F | 4.08 in. |
| June | 52.4 °F | 75.8 °F | 4.53 in. |
| July | 57.2 °F | 80.7 °F | 4.15 in. |
| August | 55.1 °F | 79.1 °F | 3.68 in. |
| September | 47.4 °F | 71.9 °F | 3.69 in. |
| October | 36.4 °F | 58.2 °F | 5.23 in. |
| November | 27.5 °F | 46.3 °F | 3.98 in. |
| December | 18.2 °F | 35.0 °F | 4.48 in. |
| Annual | 34.2 °F | 56.1 °F | 49.12 in. |
| 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 : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |