Severe Thunderstorms in Portions of the Mississippi Valley and Great Lakes

A few severe thunderstorms with large hail, are expected across parts of the middle and upper Mississippi River Valley tonight through early morning. Snow and a wintry mix overnight in the Upper Midwest into the Great Lakes can cause hazardous travel conditions. Fire weather concerns continue for a large portion of the central and southern High Plains and Four Corners region this evening. Read More >

Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Overcast

59°F

15°C

Humidity 69%
Wind Speed SW 14 G 20 mph
Barometer 30.08 in (1018.4 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 30 Mar 10:54 pm EDT
Extended Forecast for

Johnstown-Cambria County Airport PA

  • Tonight

    Tonight: A chance of showers, mainly after 4am.  Partly cloudy, with a low around 55. Southwest wind around 14 mph, with gusts as high as 23 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers before 3pm, then a slight chance of showers and thunderstorms between 3pm and 5pm.  Mostly cloudy, with a high near 70. Southwest wind around 16 mph, with gusts as high as 30 mph.  Chance of precipitation is 20%.

    High: 70 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms after 8pm.  Mostly cloudy, with a low around 59. Southwest wind 13 to 15 mph, with gusts as high as 22 mph.  Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm.  High near 65. West wind 11 to 14 mph, with gusts as high as 24 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 11pm, then showers likely.  Low around 54. Northwest wind 6 to 8 mph becoming southeast in the evening.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm.  Mostly cloudy, with a high near 70. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely before 8pm.  Mostly cloudy, with a low around 56. Chance of precipitation is 60%.

    Low: 56 °F

    Showers
    Likely then
    Mostly Cloudy

  • Friday

    Friday: A chance of showers after 8am.  Mostly cloudy, with a high near 74. Chance of precipitation is 50%.

    High: 74 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before 2am.  Mostly cloudy, with a low around 58. Chance of precipitation is 40%.

    Low: 58 °F

    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers, mainly after 4am. Partly cloudy, with a low around 55. Southwest wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A slight chance of showers before 3pm, then a slight chance of showers and thunderstorms between 3pm and 5pm. Mostly cloudy, with a high near 70. Southwest wind around 16 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Tuesday Night
A chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 59. Southwest wind 13 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and possibly a thunderstorm. High near 65. West wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 54. Northwest wind 6 to 8 mph becoming southeast in the evening. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 70. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers likely before 8pm. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Friday
A chance of showers after 8am. Mostly cloudy, with a high near 74. Chance of precipitation is 50%.
Friday Night
A chance of showers before 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.
Saturday
Showers likely, mainly after 2pm. Partly sunny, with a high near 75. Chance of precipitation is 60%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Sunday
Showers likely. Mostly cloudy, with a high near 64. Chance of precipitation is 70%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 37. Chance of precipitation is 40%.
Monday
Partly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
Johnstown-Cambria County Airport PA
 40.31°N 78.84°W (Elev. 2221 ft)
8:05 pm EDT Mar 30, 2026
11pm EDT Mar 30, 2026-6pm EDT Apr 6, 2026
 
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Additional Resources

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