Lexington Massachusetts Climate Data

Monthly Average Climate Data for Lexington Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.0 °F35.4 °F3.81 in.
February18.8 °F38.2 °F3.45 in.
March26.1 °F46.2 °F4.6 in.
April36.4 °F58.3 °F4.18 in.
May46.4 °F68.6 °F3.66 in.
June55.8 °F77.4 °F4.19 in.
July61.7 °F83.3 °F3.68 in.
August60.3 °F81.9 °F3.77 in.
September52.5 °F74.8 °F3.72 in.
October41.3 °F62.5 °F4.82 in.
November31.8 °F51.7 °F4.0 in.
December23.5 °F41.2 °F4.77 in.
Annual39.3 °F60 °F48.65 in.

Climate Data for Lexington 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 ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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