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

Hazardous Weather Conditions

Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

A Few Clouds

27°F

-3°C

Humidity 63%
Wind Speed E 5 mph
Barometer 30.16 in (1024.4 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 1 Dec 4:54 pm EST
Extended Forecast for

Saint Michael-Sidman PA

Winter Weather Advisory December 2, 01:00am until December 2, 01:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: Snow, mainly after 4am. Low around 26. Light east wind becoming southeast 5 to 9 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 26 °F

    Mostly Cloudy
    then Snow

  • Tuesday

    Tuesday: Snow before 4pm, then a chance of snow and freezing rain. High near 34. Southeast wind 5 to 9 mph becoming northwest in the afternoon. Chance of precipitation is 100%. Little or no ice accumulation expected. New snow accumulation of 1 to 3 inches possible.

    High: 34 °F

    Snow then
    Wintry Mix

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 23. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 23 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 32. Southwest wind 6 to 8 mph.

    High: 32 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 23. Southwest wind 6 to 10 mph, with gusts as high as 23 mph.

    Low: 23 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of snow showers before 1pm. Mostly cloudy, with a high near 30. Chance of precipitation is 30%.

    High: 30 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 29.

    High: 29 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of snow. Mostly cloudy, with a low around 20. Chance of precipitation is 30%.

    Low: 20 °F

    Chance Snow

Detailed Forecast

Tonight
Snow, mainly after 4am. Low around 26. Light east wind becoming southeast 5 to 9 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 2 inches possible.
Tuesday
Snow before 4pm, then a chance of snow and freezing rain. High near 34. Southeast wind 5 to 9 mph becoming northwest in the afternoon. Chance of precipitation is 100%. Little or no ice accumulation expected. New snow accumulation of 1 to 3 inches possible.
Tuesday Night
Mostly cloudy, with a low around 23. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 32. Southwest wind 6 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 23. Southwest wind 6 to 10 mph, with gusts as high as 23 mph.
Thursday
A chance of snow showers before 1pm. Mostly cloudy, with a high near 30. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 8.
Friday
Partly sunny, with a high near 29.
Friday Night
A chance of snow. Mostly cloudy, with a low around 20. Chance of precipitation is 30%.
Saturday
Mostly cloudy, with a high near 36.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
A chance of snow. Mostly cloudy, with a high near 33. Chance of precipitation is 30%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Michael-Sidman PA
 40.33°N 78.78°W (Elev. 1798 ft)
Last Update:
2:26 pm EST Dec 1, 2025
Forecast Valid:
5pm EST Dec 1, 2025-6pm EST Dec 8, 2025
 
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