Ipswich, Massachusetts has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.2 °F (low) to 58.6 °F (high). Annual precipitation averages 49.6 Inches. Ipswich 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 | 18.4 °F | 35.6 °F | 3.9 in. |
| February | 20.0 °F | 37.9 °F | 3.73 in. |
| March | 27.1 °F | 44.6 °F | 4.97 in. |
| April | 36.6 °F | 56.3 °F | 4.3 in. |
| May | 46.6 °F | 65.8 °F | 3.68 in. |
| June | 56.3 °F | 75.2 °F | 4.37 in. |
| July | 62.1 °F | 81.3 °F | 3.56 in. |
| August | 60.9 °F | 80.0 °F | 3.39 in. |
| September | 53.7 °F | 72.8 °F | 3.84 in. |
| October | 42.5 °F | 61.4 °F | 4.81 in. |
| November | 33.3 °F | 50.8 °F | 4.05 in. |
| December | 24.9 °F | 41.1 °F | 4.97 in. |
| Annual | 40.2 °F | 58.6 °F | 49.57 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 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |