Winter Storm in the Central Appalachians through the Northeast; Heavy Snow in the Great Basin and Rockies

A winter storm will impact the central Appalachians to the Northeast through the night. Accumulating snow is expected for interior New England and the northern Mid-Atlantic. Scattered showers and occasional thunderstorms will persist across Florida and the Southeast coast. Locally heavy mountain snow is expected in the Great Basin and Rockies over the next couple of days. Read More >

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

32°F

0°C

Humidity 93%
Wind Speed Calm
Barometer 29.78 in
Dewpoint 30°F (-1°C)
Visibility 5.00 mi
Last update 2 Dec 1:15 pm EST
Extended Forecast for

4 Miles SE Sinnamahoning PA

  • This Afternoon

    This Afternoon: Cloudy, with a high near 32. Calm wind becoming northwest around 5 mph.

    High: 32 °F

    Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 21. Northwest wind 6 to 8 mph, with gusts as high as 20 mph.

    Low: 21 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 34. West wind around 6 mph.

    High: 34 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of snow after 1am.  Increasing clouds, with a low around 25. West wind 7 to 9 mph, with gusts as high as 21 mph.  Chance of precipitation is 30%.

    Low: 25 °F

    Mostly Cloudy
    then Chance
    Snow

  • Thursday

    Thursday: A chance of snow before 1pm.  Partly sunny, with a high near 30. West wind 9 to 14 mph, with gusts as high as 30 mph.  Chance of precipitation is 30%.

    High: 30 °F

    Chance Snow

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 10.

    Low: 10 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 28.

    High: 28 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 34.

    High: 34 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Cloudy, with a high near 32. Calm wind becoming northwest around 5 mph.
Tonight
Mostly cloudy, with a low around 21. Northwest wind 6 to 8 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 34. West wind around 6 mph.
Wednesday Night
A chance of snow after 1am. Increasing clouds, with a low around 25. West wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Thursday
A chance of snow before 1pm. Partly sunny, with a high near 30. West wind 9 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 10.
Friday
Partly sunny, with a high near 28.
Friday Night
Mostly cloudy, with a low around 20.
Saturday
Mostly cloudy, with a high near 34.
Saturday Night
Mostly cloudy, with a low around 23.
Sunday
Mostly cloudy, with a high near 31.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 15. Chance of precipitation is 30%.
Monday
A chance of snow. Partly sunny, with a high near 27. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Sinnamahoning PA
 41.34°N 78°W (Elev. 1906 ft)
1:05 pm EST Dec 2, 2025
1pm EST Dec 2, 2025-6pm EST Dec 8, 2025
 
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Additional Resources

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