Jamestown Pennsylvania Climate Data

Monthly Average Climate Data for Jamestown Pennsylvania

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.8 °C1.1 °C80.77 mm
February-7.7 °C2.5 °C57.91 mm
March-3.4 °C7.6 °C76.71 mm
April2.3 °C15.2 °C101.85 mm
May8.2 °C21.3 °C101.6 mm
June13.2 °C25.8 °C122.17 mm
July15.4 °C27.8 °C117.09 mm
August14.4 °C27 °C99.06 mm
September10.8 °C23.6 °C108.2 mm
October5.1 °C16.9 °C92.2 mm
November0.3 °C9.8 °C81.79 mm
December-4.2 °C3.8 °C81.79 mm
Annual3.9 °C15.2 °C1121.14 mm

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 : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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