Storrs, Connecticut has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.9 °F (low) to 58.8 °F (high). Annual precipitation averages 49.2 Inches. Storrs is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.3 °F | 35.0 °F | 3.6 in. |
| February | 18.2 °F | 37.6 °F | 3.12 in. |
| March | 25.9 °F | 45.3 °F | 4.35 in. |
| April | 35.9 °F | 57.3 °F | 4.33 in. |
| May | 45.8 °F | 67.8 °F | 3.56 in. |
| June | 55.2 °F | 76.0 °F | 4.32 in. |
| July | 60.8 °F | 81.1 °F | 3.99 in. |
| August | 59.0 °F | 79.5 °F | 4.25 in. |
| September | 51.9 °F | 72.9 °F | 4.42 in. |
| October | 40.7 °F | 61.3 °F | 4.86 in. |
| November | 31.7 °F | 50.7 °F | 3.92 in. |
| December | 23.8 °F | 40.6 °F | 4.45 in. |
| Annual | 38.9 °F | 58.8 °F | 49.17 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |