Currently: 43 °F. Light rain. Clear. (Weather station: Altoona-Blair County Airport, USA). See more current weatherAnnual Weather Averages in Altoona-Blair County Airport
Altoona-Blair County Airport is 32 miles from Johnstown, so the actual climate in Johnstown can vary a bit.
Based on weather reports collected during 1985–2015.
All Year Climate & Weather Averages in Johnstown
High Temp: 82 °F
Low Temp: 21 °F
Mean Temp: 50 °F
Precipitation: 1.62"
Humidity: 70%
Dew Point: 40 °F
Wind: 6 mph
Pressure: 30.06 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Johnstown
High Temp: 35 °F
Low Temp: 21 °F
Mean Temp: 28 °F
Precipitation: 1.19"
Humidity: 71%
Dew Point: 19 °F
Wind: 8 mph
Pressure: 30.09 "Hg
Visibility: 8 mi
February Climate & Weather Averages in Johnstown
High Temp: 37 °F
Low Temp: 22 °F
Mean Temp: 30 °F
Precipitation: 1.00"
Humidity: 68%
Dew Point: 20 °F
Wind: 8 mph
Pressure: 30.08 "Hg
Visibility: 8 mi
March Climate & Weather Averages in Johnstown
High Temp: 47 °F
Low Temp: 29 °F
Mean Temp: 38 °F
Precipitation: 1.80"
Humidity: 65%
Dew Point: 27 °F
Wind: 8 mph
Pressure: 30.06 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Johnstown
High Temp: 60 °F
Low Temp: 39 °F
Mean Temp: 50 °F
Precipitation: 1.82"
Humidity: 61%
Dew Point: 36 °F
Wind: 7 mph
Pressure: 30.00 "Hg
Visibility: 10 mi
May Climate & Weather Averages in Johnstown
High Temp: 70 °F
Low Temp: 49 °F
Mean Temp: 59 °F
Precipitation: 2.26"
Humidity: 67%
Dew Point: 48 °F
Wind: 6 mph
Pressure: 30.01 "Hg
Visibility: 9 mi
June Climate & Weather Averages in Johnstown
High Temp: 78 °F
Low Temp: 58 °F
Mean Temp: 68 °F
Precipitation: 2.00"
Humidity: 71%
Dew Point: 58 °F
Wind: 5 mph
Pressure: 29.99 "Hg
Visibility: 8 mi
July Climate & Weather Averages in Johnstown
High Temp: 82 °F
Low Temp: 61 °F
Mean Temp: 72 °F
Precipitation: 1.87"
Humidity: 72%
Dew Point: 62 °F
Wind: 4 mph
Pressure: 30.01 "Hg
Visibility: 8 mi
August Climate & Weather Averages in Johnstown
High Temp: 81 °F
Low Temp: 59 °F
Mean Temp: 70 °F
Precipitation: 1.65"
Humidity: 74%
Dew Point: 61 °F
Wind: 4 mph
Pressure: 30.04 "Hg
Visibility: 8 mi
September Climate & Weather Averages in Johnstown
High Temp: 73 °F
Low Temp: 52 °F
Mean Temp: 63 °F
Precipitation: 1.81"
Humidity: 75%
Dew Point: 54 °F
Wind: 4 mph
Pressure: 30.08 "Hg
Visibility: 8 mi
October Climate & Weather Averages in Johnstown
High Temp: 62 °F
Low Temp: 42 °F
Mean Temp: 52 °F
Precipitation: 1.25"
Humidity: 71%
Dew Point: 42 °F
Wind: 6 mph
Pressure: 30.09 "Hg
Visibility: 10 mi
November Climate & Weather Averages in Johnstown
High Temp: 50 °F
Low Temp: 34 °F
Mean Temp: 42 °F
Precipitation: 1.38"
Humidity: 69%
Dew Point: 32 °F
Wind: 7 mph
Pressure: 30.12 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Johnstown
High Temp: 39 °F
Low Temp: 25 °F
Mean Temp: 32 °F
Precipitation: 1.40"
Humidity: 73%
Dew Point: 24 °F
Wind: 7 mph
Pressure: 30.12 "Hg
Visibility: 8 mi