Westerly Rhode Island Climate Data

Monthly Average Climate Data for Westerly Rhode Island

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-5.8 °C3.5 °C99.31 mm
February-4.9 °C4.4 °C86.36 mm
March-1.1 °C7.9 °C125.73 mm
April3.9 °C13.3 °C114.81 mm
May9.2 °C18.4 °C88.9 mm
June14.6 °C23.4 °C95.5 mm
July17.9 °C26.8 °C76.71 mm
August17.2 °C26.2 °C92.46 mm
September13.4 °C23.1 °C90.42 mm
October7.3 °C17.2 °C118.62 mm
November1.9 °C11.7 °C101.85 mm
December-2.3 °C6.7 °C120.65 mm
Annual5.9 °C15.2 °C1211.32 mm

Climate Data for Westerly Rhode Island

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 7a : -17.8°C to -15°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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