Westfield Pennsylvania Climate Data

Monthly Average Climate Data for Westfield Pennsylvania

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-10.1 °C0.2 °C59.69 mm
February-9.6 °C1.6 °C47.75 mm
March-5.8 °C6.2 °C65.79 mm
April0 °C13.7 °C78.49 mm
May6.1 °C20.5 °C89.66 mm
June11 °C25.1 °C99.57 mm
July13.3 °C27.3 °C96.77 mm
August12.6 °C26.6 °C91.95 mm
September8.7 °C22.8 °C99.57 mm
October2.9 °C15.8 °C92.96 mm
November-2.1 °C8.6 °C72.64 mm
December-6.3 °C2.7 °C64.77 mm
Annual1.7 °C14.3 °C959.61 mm

Climate Data for Westfield Pennsylvania

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
2025 plantmaps.com