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Climate & Weather Averages in Johnstown, Pennsylvania, USA

Currently: 45 °F. Clear. (Weather station: Altoona-Blair County Airport, USA). See more current weather

Annual 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 1992–2021.

All Year Climate & Weather Averages in Johnstown

High Temp: 82 °F

Low Temp: 21 °F

Mean Temp: 51 °F

Precipitation: 3.16"

Humidity: 70%

Dew Point: 41 °F

Wind: 12 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: 2.33"

Humidity: 71%

Dew Point: 20 °F

Wind: 15 mph

Pressure: 30.09 "Hg

Visibility: 8 mi

February Climate & Weather Averages in Johnstown

High Temp: 38 °F

Low Temp: 22 °F

Mean Temp: 30 °F

Precipitation: 2.15"

Humidity: 68%

Dew Point: 21 °F

Wind: 15 mph

Pressure: 30.07 "Hg

Visibility: 8 mi

March Climate & Weather Averages in Johnstown

High Temp: 47 °F

Low Temp: 29 °F

Mean Temp: 38 °F

Precipitation: 3.06"

Humidity: 65%

Dew Point: 27 °F

Wind: 15 mph

Pressure: 30.07 "Hg

Visibility: 9 mi

April Climate & Weather Averages in Johnstown

High Temp: 61 °F

Low Temp: 39 °F

Mean Temp: 50 °F

Precipitation: 3.31"

Humidity: 61%

Dew Point: 36 °F

Wind: 14 mph

Pressure: 30.00 "Hg

Visibility: 10 mi

May Climate & Weather Averages in Johnstown

High Temp: 71 °F

Low Temp: 49 °F

Mean Temp: 60 °F

Precipitation: 3.82"

Humidity: 67%

Dew Point: 48 °F

Wind: 11 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: 3.50"

Humidity: 71%

Dew Point: 58 °F

Wind: 10 mph

Pressure: 29.99 "Hg

Visibility: 8 mi

July Climate & Weather Averages in Johnstown

High Temp: 82 °F

Low Temp: 62 °F

Mean Temp: 72 °F

Precipitation: 3.53"

Humidity: 72%

Dew Point: 62 °F

Wind: 8 mph

Pressure: 30.01 "Hg

Visibility: 8 mi

August Climate & Weather Averages in Johnstown

High Temp: 81 °F

Low Temp: 60 °F

Mean Temp: 70 °F

Precipitation: 3.47"

Humidity: 74%

Dew Point: 61 °F

Wind: 7 mph

Pressure: 30.04 "Hg

Visibility: 8 mi

September Climate & Weather Averages in Johnstown

High Temp: 74 °F

Low Temp: 53 °F

Mean Temp: 63 °F

Precipitation: 4.23"

Humidity: 75%

Dew Point: 55 °F

Wind: 8 mph

Pressure: 30.08 "Hg

Visibility: 8 mi

October Climate & Weather Averages in Johnstown

High Temp: 63 °F

Low Temp: 43 °F

Mean Temp: 53 °F

Precipitation: 3.01"

Humidity: 72%

Dew Point: 43 °F

Wind: 10 mph

Pressure: 30.08 "Hg

Visibility: 9 mi

November Climate & Weather Averages in Johnstown

High Temp: 50 °F

Low Temp: 33 °F

Mean Temp: 42 °F

Precipitation: 2.86"

Humidity: 68%

Dew Point: 31 °F

Wind: 13 mph

Pressure: 30.13 "Hg

Visibility: 9 mi

December Climate & Weather Averages in Johnstown

High Temp: 40 °F

Low Temp: 26 °F

Mean Temp: 33 °F

Precipitation: 2.67"

Humidity: 72%

Dew Point: 24 °F

Wind: 14 mph

Pressure: 30.11 "Hg

Visibility: 8 mi

Quick Climate Info

Hottest MonthJuly (72 °F avg)
Coldest MonthJanuary (28 °F avg)
Wettest MonthSeptember (4.23" avg)
Windiest MonthJanuary (15 mph avg)
Annual precip.37.94" (per year)

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