Norwell Massachusetts Climate Data

Monthly Average Climate Data for Norwell Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-6.1 °C3 °C110.24 mm
February-5.4 °C4.2 °C100.84 mm
March-1.6 °C7.8 °C139.19 mm
April3.8 °C14.1 °C118.11 mm
May9.2 °C19.7 °C92.46 mm
June14.5 °C24.9 °C97.03 mm
July17.9 °C28.1 °C88.14 mm
August17.2 °C27.3 °C93.73 mm
September13.4 °C23.4 °C98.3 mm
October7.3 °C17.1 °C132.08 mm
November1.9 °C11.3 °C115.82 mm
December-2.7 °C6.1 °C130.05 mm
Annual5.8 °C15.6 °C1315.99 mm

Climate Data for Norwell Massachusetts

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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