Bolton Massachusetts Climate Data

Monthly Average Climate Data for Bolton Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.9 °F33.9 °F3.75 in.
February17.3 °F36.6 °F3.39 in.
March25.3 °F44.2 °F4.47 in.
April36.0 °F57.1 °F4.27 in.
May46.8 °F68.2 °F3.72 in.
June56.3 °F76.6 °F4.39 in.
July62.0 °F82.1 °F3.82 in.
August60.5 °F80.6 °F4.16 in.
September52.4 °F73.7 °F4.06 in.
October40.9 °F61.5 °F4.94 in.
November31.2 °F50.2 °F3.88 in.
December22.6 °F39.7 °F4.64 in.
Annual38.9 °F58.7 °F49.49 in.

Climate Data for Bolton Massachusetts

Average First Frost DateOct. 1 - Oct. 10
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