Jefferson Pennsylvania Climate Data

Monthly Average Climate Data for Jefferson Pennsylvania

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January21.0 °F38.4 °F3.23 in.
February22.2 °F41.3 °F2.75 in.
March29.1 °F50.8 °F3.48 in.
April38.6 °F64.0 °F3.44 in.
May49.0 °F73.0 °F4.4 in.
June57.9 °F80.3 °F4.41 in.
July62.1 °F84.1 °F4.54 in.
August60.6 °F83.1 °F3.81 in.
September53.6 °F77.1 °F3.34 in.
October42.1 °F65.2 °F2.87 in.
November32.7 °F52.9 °F3.03 in.
December26.0 °F42.6 °F3.21 in.
Annual41.2 °F62.7 °F42.51 in.
MonthAvg. LowAvg. HighAvg. Precip
January23.1 °F39.5 °F3.21 in.
February24.5 °F42.4 °F2.69 in.
March31.4 °F51.2 °F4.0 in.
April41.8 °F63.6 °F3.53 in.
May51.4 °F73.1 °F4.06 in.
June60.7 °F81.3 °F3.86 in.
July65.0 °F85.6 °F4.35 in.
August63.2 °F83.9 °F3.96 in.
September56.4 °F77.4 °F4.97 in.
October45.1 °F65.5 °F4.03 in.
November35.4 °F54.3 °F3.2 in.
December27.9 °F43.8 °F3.58 in.
Annual43.8 °F63.5 °F45.44 in.

Climate Data for Jefferson Pennsylvania

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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