Annual Weather Averages Near Johnstown
Averages are for Clarksburg Benedum Airport, which is 12 miles from Johnstown.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Johnstown
High Temp: 84 °F
Low Temp: 23 °F
Mean Temp: 53 °F
Precipitation: 3.72"
Humidity: 68%
Dew Point: 43 °F
Wind: 9 mph
Pressure: 30.05 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Johnstown
High Temp: 40 °F
Low Temp: 23 °F
Mean Temp: 32 °F
Precipitation: 3.44"
Humidity: 71%
Dew Point: 24 °F
Wind: 12 mph
Pressure: 30.10 "Hg
Visibility: 8 mi
February Climate & Weather Averages in Johnstown
High Temp: 44 °F
Low Temp: 25 °F
Mean Temp: 34 °F
Precipitation: 3.33"
Humidity: 67%
Dew Point: 25 °F
Wind: 12 mph
Pressure: 30.09 "Hg
Visibility: 8 mi
March Climate & Weather Averages in Johnstown
High Temp: 53 °F
Low Temp: 32 °F
Mean Temp: 43 °F
Precipitation: 3.83"
Humidity: 62%
Dew Point: 30 °F
Wind: 11 mph
Pressure: 30.06 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Johnstown
High Temp: 66 °F
Low Temp: 41 °F
Mean Temp: 53 °F
Precipitation: 3.77"
Humidity: 58%
Dew Point: 39 °F
Wind: 11 mph
Pressure: 29.98 "Hg
Visibility: 10 mi
May Climate & Weather Averages in Johnstown
High Temp: 74 °F
Low Temp: 50 °F
Mean Temp: 62 °F
Precipitation: 4.51"
Humidity: 67%
Dew Point: 51 °F
Wind: 8 mph
Pressure: 30.00 "Hg
Visibility: 9 mi
June Climate & Weather Averages in Johnstown
High Temp: 81 °F
Low Temp: 59 °F
Mean Temp: 70 °F
Precipitation: 4.43"
Humidity: 70%
Dew Point: 60 °F
Wind: 8 mph
Pressure: 29.98 "Hg
Visibility: 8 mi
July Climate & Weather Averages in Johnstown
High Temp: 84 °F
Low Temp: 63 °F
Mean Temp: 74 °F
Precipitation: 5.13"
Humidity: 72%
Dew Point: 64 °F
Wind: 7 mph
Pressure: 30.00 "Hg
Visibility: 8 mi
August Climate & Weather Averages in Johnstown
High Temp: 83 °F
Low Temp: 62 °F
Mean Temp: 72 °F
Precipitation: 3.39"
Humidity: 73%
Dew Point: 63 °F
Wind: 6 mph
Pressure: 30.02 "Hg
Visibility: 7 mi
September Climate & Weather Averages in Johnstown
High Temp: 77 °F
Low Temp: 55 °F
Mean Temp: 66 °F
Precipitation: 3.45"
Humidity: 73%
Dew Point: 57 °F
Wind: 6 mph
Pressure: 30.06 "Hg
Visibility: 8 mi
October Climate & Weather Averages in Johnstown
High Temp: 66 °F
Low Temp: 43 °F
Mean Temp: 54 °F
Precipitation: 3.00"
Humidity: 70%
Dew Point: 45 °F
Wind: 7 mph
Pressure: 30.07 "Hg
Visibility: 9 mi
November Climate & Weather Averages in Johnstown
High Temp: 54 °F
Low Temp: 34 °F
Mean Temp: 44 °F
Precipitation: 3.00"
Humidity: 67%
Dew Point: 33 °F
Wind: 9 mph
Pressure: 30.13 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Johnstown
High Temp: 45 °F
Low Temp: 28 °F
Mean Temp: 36 °F
Precipitation: 3.39"
Humidity: 71%
Dew Point: 28 °F
Wind: 10 mph
Pressure: 30.12 "Hg
Visibility: 9 mi