East Longmeadow, Massachusetts has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.2 °C (low) to 15.5 °C (high). Annual precipitation averages 1206.2 Millimeters. East Longmeadow is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.3 °C | 1.4 °C | 85.34 mm |
| February | -7.7 °C | 3 °C | 76.71 mm |
| March | -3.1 °C | 7.6 °C | 102.62 mm |
| April | 2.8 °C | 15.1 °C | 98.04 mm |
| May | 8.5 °C | 21.2 °C | 91.44 mm |
| June | 13.5 °C | 25.7 °C | 110.74 mm |
| July | 16.7 °C | 28.7 °C | 101.85 mm |
| August | 15.7 °C | 27.8 °C | 102.87 mm |
| September | 11.5 °C | 23.9 °C | 114.81 mm |
| October | 5.2 °C | 17 °C | 123.44 mm |
| November | -0.1 °C | 10.3 °C | 90.42 mm |
| December | -4.8 °C | 4.4 °C | 107.95 mm |
| Annual | 4.2 °C | 15.5 °C | 1206.23 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |