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

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

25°F

-4°C

Humidity 74%
Wind Speed SE 5 mph
Barometer 29.96 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 5 Dec 2:15 pm EST
Extended Forecast for

4 Miles SE Sinnamahoning PA

  • This Afternoon

    This Afternoon: Cloudy, with a high near 27. South wind around 6 mph.

    High: 27 °F

    Cloudy

  • Tonight

    Tonight: Cloudy, with a low around 21. South wind around 6 mph.

    Low: 21 °F

    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 35. Southwest wind around 7 mph.

    High: 35 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 25. West wind around 6 mph.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of snow showers after 1pm. Mostly cloudy, with a high near 34. Southwest wind 3 to 6 mph. Chance of precipitation is 40%.

    High: 34 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Sunday Night

    Sunday Night: A chance of snow showers, mainly before 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 40%.

    Low: 16 °F

    Chance Snow
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

  • Monday Night

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

    Low: 10 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of snow showers after 1pm. Mostly cloudy, with a high near 31. Chance of precipitation is 40%.

    High: 31 °F

    Mostly Cloudy
    then Chance
    Snow Showers

Detailed Forecast

This Afternoon
Cloudy, with a high near 27. South wind around 6 mph.
Tonight
Cloudy, with a low around 21. South wind around 6 mph.
Saturday
Mostly cloudy, with a high near 35. Southwest wind around 7 mph.
Saturday Night
Mostly cloudy, with a low around 25. West wind around 6 mph.
Sunday
A chance of snow showers after 1pm. Mostly cloudy, with a high near 34. Southwest wind 3 to 6 mph. Chance of precipitation is 40%.
Sunday Night
A chance of snow showers, mainly before 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 24.
Monday Night
Partly cloudy, with a low around 10.
Tuesday
A chance of snow showers after 1pm. Mostly cloudy, with a high near 31. Chance of precipitation is 40%.
Tuesday Night
A chance of snow showers. Cloudy, with a low around 26. Chance of precipitation is 50%.
Wednesday
Snow showers. High near 38. Chance of precipitation is 80%.
Wednesday Night
Snow showers. Low around 26. Chance of precipitation is 80%.
Thursday
Snow showers likely. Mostly cloudy, with a high near 33. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Sinnamahoning PA
 41.34°N 78°W (Elev. 1906 ft)
Last Update:
1:51 pm EST Dec 5, 2025
Forecast Valid:
2pm EST Dec 5, 2025-6pm EST Dec 11, 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