Norwell Massachusetts Climate Data

Monthly Average Climate Data for Norwell Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January21.1 °F37.4 °F4.34 in.
February22.3 °F39.5 °F3.97 in.
March29.1 °F46.0 °F5.48 in.
April38.9 °F57.4 °F4.65 in.
May48.6 °F67.5 °F3.64 in.
June58.1 °F76.8 °F3.82 in.
July64.3 °F82.6 °F3.47 in.
August63.0 °F81.2 °F3.69 in.
September56.1 °F74.1 °F3.87 in.
October45.1 °F62.8 °F5.2 in.
November35.5 °F52.3 °F4.56 in.
December27.2 °F42.9 °F5.12 in.
Annual42.4 °F60 °F51.81 in.

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 : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation