Concord Massachusetts Climate Data

Monthly Average Climate Data for Concord Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.6 °C1.8 °C93.73 mm
February-7.6 °C3.4 °C84.58 mm
March-3.4 °C7.6 °C112.78 mm
April2.3 °C14.7 °C105.16 mm
May8 °C20.4 °C92.96 mm
June13.2 °C25.3 °C107.19 mm
July16.4 °C28.6 °C92.46 mm
August15.7 °C27.8 °C96.52 mm
September11.2 °C23.9 °C94.23 mm
October4.9 °C17.1 °C122.68 mm
November-0.4 °C10.9 °C98.81 mm
December-4.9 °C5.1 °C118.62 mm
Annual3.9 °C15.6 °C1219.72 mm

Climate Data for Concord 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
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