Lexington Massachusetts Climate Data

Monthly Average Climate Data for Lexington Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.3 °C1.9 °C96.77 mm
February-7.3 °C3.4 °C87.63 mm
March-3.3 °C7.9 °C116.84 mm
April2.4 °C14.6 °C106.17 mm
May8 °C20.3 °C92.96 mm
June13.2 °C25.2 °C106.43 mm
July16.5 °C28.5 °C93.47 mm
August15.7 °C27.7 °C95.76 mm
September11.4 °C23.8 °C94.49 mm
October5.2 °C16.9 °C122.43 mm
November-0.1 °C10.9 °C101.6 mm
December-4.7 °C5.1 °C121.16 mm
Annual4.1 °C15.5 °C1235.71 mm

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 : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
2024 plantmaps.com