Holliston Massachusetts Climate Data

Monthly Average Climate Data for Holliston Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.3 °F36.1 °F3.89 in.
February18.9 °F38.7 °F3.37 in.
March26.5 °F46.0 °F4.58 in.
April36.7 °F58.4 °F4.4 in.
May46.8 °F68.7 °F3.49 in.
June56.1 °F77.2 °F4.3 in.
July62.1 °F82.9 °F3.57 in.
August60.7 °F81.6 °F3.96 in.
September52.9 °F74.8 °F3.85 in.
October41.5 °F62.8 °F4.81 in.
November32.1 °F51.8 °F3.96 in.
December23.7 °F41.5 °F4.84 in.
Annual39.6 °F60 °F49.02 in.

Climate Data for Holliston 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 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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