Scituate, Massachusetts has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.7 °F (low) to 58.9 °F (high). Annual precipitation averages 51.6 Inches. Scituate is located in USDA Plant Hardiness Zone 7a. 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 | 23.4 °F | 37.8 °F | 4.27 in. |
| February | 24.6 °F | 39.8 °F | 3.99 in. |
| March | 30.5 °F | 44.9 °F | 5.53 in. |
| April | 39.2 °F | 54.9 °F | 4.53 in. |
| May | 49.1 °F | 65.2 °F | 3.63 in. |
| June | 58.0 °F | 74.3 °F | 3.81 in. |
| July | 64.2 °F | 80.5 °F | 3.47 in. |
| August | 63.4 °F | 78.7 °F | 3.66 in. |
| September | 57.4 °F | 72.5 °F | 4.0 in. |
| October | 47.2 °F | 62.2 °F | 5.12 in. |
| November | 37.8 °F | 52.2 °F | 4.51 in. |
| December | 29.6 °F | 43.4 °F | 5.04 in. |
| Annual | 43.7 °F | 58.9 °F | 51.56 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 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 |