Westerly Rhode Island Climate Data

Monthly Average Climate Data for Westerly Rhode Island

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January21.5 °F38.3 °F3.91 in.
February23.1 °F39.9 °F3.4 in.
March30.0 °F46.2 °F4.95 in.
April39.1 °F55.9 °F4.52 in.
May48.6 °F65.2 °F3.5 in.
June58.2 °F74.1 °F3.76 in.
July64.2 °F80.2 °F3.02 in.
August63.0 °F79.2 °F3.64 in.
September56.1 °F73.5 °F3.56 in.
October45.2 °F62.9 °F4.67 in.
November35.4 °F53.0 °F4.01 in.
December27.8 °F44.0 °F4.75 in.
Annual42.7 °F59.4 °F47.69 in.

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 : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 7a : 0°F to 5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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