Westwood Massachusetts Climate Data

Monthly Average Climate Data for Westwood Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.4 °F36.4 °F4.03 in.
February20.0 °F38.9 °F3.46 in.
March27.3 °F46.0 °F4.87 in.
April37.5 °F58.0 °F4.44 in.
May47.3 °F68.4 °F3.6 in.
June56.7 °F77.1 °F4.12 in.
July62.7 °F82.9 °F3.59 in.
August61.2 °F81.5 °F3.88 in.
September54.0 °F74.5 °F3.79 in.
October42.5 °F62.5 °F4.93 in.
November33.2 °F51.9 °F4.16 in.
December24.7 °F41.9 °F4.87 in.
Annual40.5 °F60 °F49.74 in.

Climate Data for Westwood Massachusetts

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
2024 plantmaps.com