Jamestown Pennsylvania Climate Data

Monthly Average Climate Data for Jamestown Pennsylvania

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.0 °F34.0 °F3.18 in.
February18.2 °F36.5 °F2.28 in.
March25.8 °F45.6 °F3.02 in.
April36.1 °F59.3 °F4.01 in.
May46.8 °F70.4 °F4.0 in.
June55.7 °F78.4 °F4.81 in.
July59.8 °F82.1 °F4.61 in.
August58.0 °F80.6 °F3.9 in.
September51.5 °F74.5 °F4.26 in.
October41.1 °F62.4 °F3.63 in.
November32.5 °F49.7 °F3.22 in.
December24.4 °F38.9 °F3.22 in.
Annual39 °F59.4 °F44.14 in.

Climate Data for Jamestown Pennsylvania

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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