The
following information includes observed average precipitation and temperature for the 10 climate regions across Pennsylvania on a monthly basis for the period 1899 through present. Regional snowfall data is now available for the period 1950 through 2004. Refer to the map below to determine each region's approximate boundary.
Region 1 Region 2
Average PrecipitationAverage Precipitation
Average Snowfall (yearly basis)Average Snowfall (yearly basis)
Average Snowfall (seasonal basis)Average Snowfall (seasonal basis)
Average TemperatureAverage Temperature
Mean Precipitation & Departure from MeanMean Precipitation & Departure from Mean
Mean Snowfall & Departure from MeanMean Snowfall & Departure from Mean
Mean Temperature & Departure from MeanMean Temperature & Departure from Mean
Region 3 Region 4
Average PrecipitationAverage Precipitation
Average Snowfall (yearly basis)Average Snowfall (yearly basis)
Average Snowfall (seasonal basis)Average Snowfall (seasonal basis)
Average TemperatureAverage Temperature
Mean Precipitation & Departure from MeanMean Precipitation & Departure from Mean
Mean Snowfall & Departure from MeanMean Snowfall & Departure from Mean
Mean Temperature & Departure from MeanMean Temperature & Departure from Mean
Region 5 Region 6
Average PrecipitationAverage Precipitation
Average Snowfall (yearly basis)Average Snowfall (yearly basis)
Average Snowfall (seasonal basis)Average Snowfall (seasonal basis)
Average TemperatureAverage Temperature
Mean Precipitation & Departure from MeanMean Precipitation & Departure from Mean
Mean Snowfall & Departure from MeanMean Snowfall & Departure from Mean
Mean Temperature & Departure from MeanMean Temperature & Departure from Mean
Region 7 Region 8
Average PrecipitationAverage Precipitation
Average Snowfall (yearly basis)Average Snowfall (yearly basis)
Average Snowfall (seasonal basis)Average Snowfall (seasonal basis)
Average TemperatureAverage Temperature
Mean Precipitation & Departure from MeanMean Precipitation & Departure from Mean
Mean Snowfall & Departure from MeanMean Snowfall & Departure from Mean
Mean Temperature & Departure from MeanMean Temperature & Departure from Mean
Region 9 Region 10
Average PrecipitationAverage Precipitation
Average Snowfall (yearly basis)Average Snowfall (yearly basis)
Average Snowfall (seasonal basis)Average Snowfall (seasonal basis)
Average TemperatureAverage Temperature
Mean Precipitation & Departure from MeanMean Precipitation & Departure from Mean
Mean Snowfall & Departure from MeanMean Snowfall & Departure from Mean
Mean Temperature & Departure from MeanMean Temperature & Departure from Mean




Susquehanna River Basin Out of State Divisional Data
New York Division 1 Precipitation
New York Division 1 Average Temperature

New York Division 2 Precipitation
New York Division 2 Average Temperature

Maryland Division 6 Precipitation
Maryland Division 6 Average Temperature