National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorms and Critical Fire Weather Wednesday

Scattered severe thunderstorms are possible across portions of the northern High Plains Wednesday afternoon and evening. Severe wind gusts are the primary hazard. Gusty winds and low relative humidity will contribute to critical fire weather conditions across parts of the northern Great Plains and Great Basin Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Fair

52°F

11°C

Humidity 50%
Wind Speed SW 6 mph
Barometer 29.93 in (1013.2 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 13 May 3:54 am EDT
Extended Forecast for

Johnstown-Cambria County Airport PA

  • Today

    Today: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 62. Southwest wind 10 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 62 °F

    Chance
    Showers then
    Showers

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 10pm, then a slight chance of showers after 4am. Low around 42. West wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 42 °F

    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 48. Northwest wind 13 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers before 2am. Mostly cloudy, with a low around 42. Northwest wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 63. Northwest wind around 11 mph, with gusts as high as 20 mph.

    High: 63 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers after 2pm. Mostly sunny, with a high near 76. Chance of precipitation is 40%.

    High: 76 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers before 8pm. Partly cloudy, with a low around 58. Chance of precipitation is 30%.

    Low: 58 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 84.

    High: 84 °F

    Partly Sunny

Detailed Forecast

Today
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 62. Southwest wind 10 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before 10pm, then a slight chance of showers after 4am. Low around 42. West wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 48. Northwest wind 13 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of showers before 2am. Mostly cloudy, with a low around 42. Northwest wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Partly sunny, with a high near 63. Northwest wind around 11 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 48.
Saturday
A chance of showers after 2pm. Mostly sunny, with a high near 76. Chance of precipitation is 40%.
Saturday Night
A chance of showers before 8pm. Partly cloudy, with a low around 58. Chance of precipitation is 30%.
Sunday
Partly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 61.
Monday
Mostly sunny, with a high near 89.
Monday Night
Partly cloudy, with a low around 66.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Johnstown-Cambria County Airport PA
 40.31°N 78.84°W (Elev. 2221 ft)
Last Update:
2:36 am EDT May 13, 2026
Forecast Valid:
4am EDT May 13, 2026-6pm EDT May 19, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation