Middletown Springs, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.5 °F (low) to 55.6 °F (high). Annual precipitation averages 47.1 Inches. Middletown Springs 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 10.9 °F | 29.6 °F | 3.22 in. |
| February | 11.9 °F | 32.5 °F | 2.63 in. |
| March | 20.6 °F | 40.8 °F | 3.49 in. |
| April | 32.1 °F | 54.4 °F | 3.72 in. |
| May | 43.4 °F | 66.9 °F | 4.13 in. |
| June | 52.3 °F | 75.2 °F | 4.9 in. |
| July | 56.9 °F | 79.7 °F | 4.81 in. |
| August | 54.9 °F | 78.1 °F | 4.34 in. |
| September | 47.3 °F | 71.3 °F | 3.98 in. |
| October | 36.9 °F | 58.1 °F | 4.56 in. |
| November | 27.9 °F | 46.0 °F | 3.41 in. |
| December | 18.5 °F | 35.0 °F | 3.89 in. |
| Annual | 34.5 °F | 55.6 °F | 47.08 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |