Sterling Massachusetts Climate Data

Monthly Average Climate Data for Sterling Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.8 °F32.7 °F4.01 in.
February16.1 °F35.4 °F3.59 in.
March24.0 °F43.1 °F4.66 in.
April34.9 °F56.1 °F4.37 in.
May45.9 °F67.3 °F3.9 in.
June55.1 °F75.8 °F4.43 in.
July60.8 °F81.2 °F3.9 in.
August59.1 °F79.6 °F4.19 in.
September51.4 °F72.6 °F4.39 in.
October40.0 °F60.2 °F5.26 in.
November30.5 °F48.9 °F4.14 in.
December21.5 °F38.4 °F4.75 in.
Annual37.8 °F57.6 °F51.59 in.

Climate Data for Sterling Massachusetts

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year