Stillwater Pennsylvania Climate Data

Monthly Average Climate Data for Stillwater Pennsylvania

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.8 °F35.7 °F3.26 in.
February20.2 °F38.5 °F2.44 in.
March27.5 °F47.2 °F3.25 in.
April37.8 °F60.9 °F3.94 in.
May48.1 °F71.8 °F4.15 in.
June57.1 °F79.5 °F4.6 in.
July61.4 °F84.0 °F4.65 in.
August59.9 °F82.3 °F4.36 in.
September52.7 °F75.5 °F4.79 in.
October41.5 °F63.4 °F4.03 in.
November32.4 °F51.2 °F3.17 in.
December24.9 °F40.5 °F3.48 in.
Annual40.2 °F60.9 °F46.12 in.

Climate Data for Stillwater Pennsylvania

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°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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