Nahant, Massachusetts has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43 °F (low) to 58.9 °F (high). Annual precipitation averages 48.1 Inches. Nahant 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 | 21.8 °F | 37.0 °F | 3.87 in. |
| February | 23.4 °F | 39.0 °F | 3.6 in. |
| March | 29.8 °F | 44.8 °F | 4.82 in. |
| April | 39.2 °F | 55.7 °F | 4.19 in. |
| May | 48.8 °F | 65.4 °F | 3.49 in. |
| June | 58.2 °F | 74.9 °F | 4.04 in. |
| July | 64.2 °F | 81.0 °F | 3.51 in. |
| August | 63.2 °F | 79.6 °F | 3.43 in. |
| September | 56.7 °F | 72.8 °F | 3.59 in. |
| October | 46.2 °F | 61.9 °F | 4.79 in. |
| November | 36.8 °F | 51.7 °F | 4.02 in. |
| December | 27.9 °F | 42.6 °F | 4.74 in. |
| Annual | 43 °F | 58.9 °F | 48.09 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 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |