Milford, Connecticut has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.7 °F (low) to 60.7 °F (high). Annual precipitation averages 48.8 Inches. Milford is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.3 °F | 38.6 °F | 3.58 in. |
| February | 24.7 °F | 40.4 °F | 3.12 in. |
| March | 31.4 °F | 47.1 °F | 4.5 in. |
| April | 41.0 °F | 57.8 °F | 4.35 in. |
| May | 50.8 °F | 67.6 °F | 3.86 in. |
| June | 60.4 °F | 76.7 °F | 4.37 in. |
| July | 66.7 °F | 82.4 °F | 3.51 in. |
| August | 65.7 °F | 80.9 °F | 4.05 in. |
| September | 58.5 °F | 75.1 °F | 4.47 in. |
| October | 47.3 °F | 64.0 °F | 4.83 in. |
| November | 37.3 °F | 53.5 °F | 3.88 in. |
| December | 29.4 °F | 43.8 °F | 4.31 in. |
| Annual | 44.7 °F | 60.7 °F | 48.83 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |