Westborough Massachusetts Climate Data

Monthly Average Climate Data for Westborough Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.3 °F35.3 °F3.81 in.
February17.7 °F38.0 °F3.36 in.
March25.6 °F45.6 °F4.55 in.
April35.9 °F58.3 °F4.33 in.
May46.5 °F68.9 °F3.55 in.
June55.9 °F77.3 °F4.25 in.
July61.7 °F82.9 °F3.76 in.
August60.1 °F81.5 °F4.1 in.
September51.9 °F74.7 °F3.92 in.
October40.4 °F62.7 °F4.88 in.
November31.0 °F51.4 °F3.89 in.
December22.6 °F41.0 °F4.73 in.
Annual38.8 °F59.8 °F49.13 in.

Climate Data for Westborough Massachusetts

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2024 plantmaps.com