Reading, Massachusetts has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.8 °F (low) to 59.8 °F (high). Annual precipitation averages 50 Inches. Reading is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.6 °F | 36.3 °F | 3.91 in. |
| February | 20.5 °F | 38.8 °F | 3.64 in. |
| March | 27.6 °F | 45.5 °F | 4.8 in. |
| April | 37.8 °F | 57.8 °F | 4.35 in. |
| May | 47.8 °F | 67.9 °F | 3.73 in. |
| June | 57.2 °F | 77.1 °F | 4.29 in. |
| July | 63.0 °F | 82.9 °F | 3.87 in. |
| August | 61.7 °F | 81.4 °F | 3.73 in. |
| September | 54.3 °F | 74.3 °F | 3.92 in. |
| October | 42.9 °F | 62.4 °F | 4.89 in. |
| November | 33.6 °F | 51.9 °F | 4.05 in. |
| December | 25.1 °F | 41.7 °F | 4.85 in. |
| Annual | 40.8 °F | 59.8 °F | 50.03 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 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 | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |