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

Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

28°F

-2°C

Humidity 74%
Wind Speed W 13 G 22 mph
Barometer 30.22 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 28 Nov 10:15 pm EST
Extended Forecast for

7 Miles E Sinnamahoning PA

  • Tonight

    Tonight: Isolated snow showers before 4am. Mostly cloudy, with a low around 25. West wind around 6 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    Low: 25 °F

    Isolated Snow
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 38. Light west wind.

    High: 38 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Snow likely, mainly after 1am. Cloudy, with a low around 28. Calm wind becoming south 5 to 8 mph after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 28 °F

    Slight Chance
    Snow then
    Snow Likely

  • Sunday

    Sunday: Snow before 10am, then snow, possibly mixed with rain. High near 42. South wind around 8 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    High: 42 °F

    Rain/Snow

  • Sunday Night

    Sunday Night: A chance of rain and snow before 1am, then a chance of snow. Mostly cloudy, with a low around 26. West wind around 6 mph, with gusts as high as 24 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 26 °F

    Chance
    Rain/Snow

  • Monday

    Monday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of snow after 1am. Mostly cloudy, with a low around 23. Chance of precipitation is 40%.

    Low: 23 °F

    Mostly Cloudy
    then Chance
    Snow

  • Tuesday

    Tuesday: Snow likely. Mostly cloudy, with a high near 36. Chance of precipitation is 70%.

    High: 36 °F

    Snow Likely

  • Tuesday Night

    Tuesday Night: A chance of snow before 1am. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.

    Low: 22 °F

    Chance Snow

Detailed Forecast

Tonight
Isolated snow showers before 4am. Mostly cloudy, with a low around 25. West wind around 6 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 38. Light west wind.
Saturday Night
Snow likely, mainly after 1am. Cloudy, with a low around 28. Calm wind becoming south 5 to 8 mph after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Sunday
Snow before 10am, then snow, possibly mixed with rain. High near 42. South wind around 8 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Sunday Night
A chance of rain and snow before 1am, then a chance of snow. Mostly cloudy, with a low around 26. West wind around 6 mph, with gusts as high as 24 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Partly sunny, with a high near 35.
Monday Night
A chance of snow after 1am. Mostly cloudy, with a low around 23. Chance of precipitation is 40%.
Tuesday
Snow likely. Mostly cloudy, with a high near 36. Chance of precipitation is 70%.
Tuesday Night
A chance of snow before 1am. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 24.
Thursday
Mostly cloudy, with a high near 36.
Thursday Night
Mostly cloudy, with a low around 16.
Friday
A chance of snow. Partly sunny, with a high near 33. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles E Sinnamahoning PA
 41.4°N 77.93°W (Elev. 1047 ft)
Last Update:
8:21 pm EST Nov 28, 2025
Forecast Valid:
10pm EST Nov 28, 2025-6pm EST Dec 5, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation