Boylston Massachusetts Climate Data

Monthly Average Climate Data for Boylston Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.6 °F34.0 °F3.78 in.
February16.9 °F36.6 °F3.3 in.
March24.9 °F44.2 °F4.47 in.
April35.5 °F57.2 °F4.26 in.
May46.3 °F68.1 °F3.6 in.
June55.7 °F76.4 °F4.25 in.
July61.5 °F81.9 °F3.97 in.
August59.8 °F80.4 °F4.43 in.
September51.7 °F73.6 °F4.1 in.
October40.3 °F61.5 °F5.03 in.
November30.7 °F50.2 °F3.86 in.
December22.1 °F39.7 °F4.56 in.
Annual38.4 °F58.7 °F49.61 in.

Climate Data for Boylston 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 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year