Jamestown Rhode Island Climate Data

Monthly Average Climate Data for Jamestown Rhode Island

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.3 °F38.5 °F3.95 in.
February24.6 °F40.1 °F3.53 in.
March30.8 °F45.7 °F5.13 in.
April39.9 °F54.9 °F4.53 in.
May49.4 °F64.3 °F3.49 in.
June58.8 °F73.1 °F3.57 in.
July65.0 °F79.4 °F3.05 in.
August64.1 °F79.0 °F3.46 in.
September58.0 °F73.0 °F3.72 in.
October47.4 °F62.8 °F4.5 in.
November38.1 °F53.0 °F4.04 in.
December29.5 °F44.2 °F4.76 in.
Annual44.1 °F59 °F47.73 in.

Climate Data for Jamestown Rhode Island

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
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 ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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