Swansea Massachusetts Climate Data

Monthly Average Climate Data for Swansea Massachusetts

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.4 °F38.1 °F4.27 in.
February23.6 °F39.8 °F3.64 in.
March30.1 °F46.5 °F5.36 in.
April40.0 °F57.3 °F4.57 in.
May49.4 °F67.6 °F3.51 in.
June59.4 °F76.3 °F4.02 in.
July65.7 °F82.3 °F3.48 in.
August64.6 °F81.0 °F3.7 in.
September57.8 °F74.4 °F3.95 in.
October46.6 °F63.0 °F4.74 in.
November37.0 °F52.7 °F4.36 in.
December28.7 °F43.4 °F4.92 in.
Annual43.8 °F60.2 °F50.52 in.

Climate Data for Swansea Massachusetts

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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