Swansea Massachusetts Climate Data

Monthly Average Climate Data for Swansea Massachusetts

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-5.3 °C3.4 °C108.46 mm
February-4.7 °C4.3 °C92.46 mm
March-1.1 °C8.1 °C136.14 mm
April4.4 °C14.1 °C116.08 mm
May9.7 °C19.8 °C89.15 mm
June15.2 °C24.6 °C102.11 mm
July18.7 °C27.9 °C88.39 mm
August18.1 °C27.2 °C93.98 mm
September14.3 °C23.6 °C100.33 mm
October8.1 °C17.2 °C120.4 mm
November2.8 °C11.5 °C110.74 mm
December-1.8 °C6.3 °C124.97 mm
Annual6.5 °C15.7 °C1283.21 mm

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 : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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