Longmeadow, Massachusetts has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.4 °F (low) to 60.5 °F (high). Annual precipitation averages 47.4 Inches. Longmeadow 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 | 17.8 °F | 35.2 °F | 3.33 in. |
| February | 19.1 °F | 38.0 °F | 3.0 in. |
| March | 27.3 °F | 46.3 °F | 4.05 in. |
| April | 38.0 °F | 59.6 °F | 3.81 in. |
| May | 48.4 °F | 70.7 °F | 3.6 in. |
| June | 57.5 °F | 78.9 °F | 4.37 in. |
| July | 63.0 °F | 84.3 °F | 3.99 in. |
| August | 61.3 °F | 82.7 °F | 3.9 in. |
| September | 53.7 °F | 75.5 °F | 4.57 in. |
| October | 42.4 °F | 63.1 °F | 4.93 in. |
| November | 32.6 °F | 51.2 °F | 3.55 in. |
| December | 24.2 °F | 40.5 °F | 4.26 in. |
| Annual | 40.4 °F | 60.5 °F | 47.36 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 | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |