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

28°F

-2°C

Humidity 86%
Wind Speed W 8 mph
Barometer 29.83 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 6 Dec 4:35 am EST
Extended Forecast for

7 Miles E Sinnamahoning PA

  • Today

    Today: Mostly cloudy, with a high near 38. Calm wind becoming southwest around 6 mph in the morning.

    High: 38 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 25. Light west wind.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of snow after 1pm. Mostly cloudy, with a high near 38. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 38 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday Night

    Sunday Night: A slight chance of snow before 1am. Mostly cloudy, with a low around 17. Light and variable wind becoming northwest around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 17 °F

    Slight Chance
    Snow

  • Monday

    Monday: Mostly sunny, with a high near 27. North wind around 5 mph becoming calm in the afternoon.

    High: 27 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 9.

    Low: 9 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of snow after 1pm. Mostly cloudy, with a high near 34. Chance of precipitation is 40%.

    High: 34 °F

    Partly Sunny
    then Chance
    Snow

  • Tuesday Night

    Tuesday Night: A chance of snow. Mostly cloudy, with a low around 27. Chance of precipitation is 40%.

    Low: 27 °F

    Chance Snow

  • Wednesday

    Wednesday: Rain and snow likely before 1pm, then rain. High near 41. Chance of precipitation is 90%.

    High: 41 °F

    Rain/Snow

Detailed Forecast

Today
Mostly cloudy, with a high near 38. Calm wind becoming southwest around 6 mph in the morning.
Tonight
Mostly cloudy, with a low around 25. Light west wind.
Sunday
A chance of snow after 1pm. Mostly cloudy, with a high near 38. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 30%.
Sunday Night
A slight chance of snow before 1am. Mostly cloudy, with a low around 17. Light and variable wind becoming northwest around 5 mph after midnight. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 27. North wind around 5 mph becoming calm in the afternoon.
Monday Night
Partly cloudy, with a low around 9.
Tuesday
A chance of snow after 1pm. Mostly cloudy, with a high near 34. Chance of precipitation is 40%.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 27. Chance of precipitation is 40%.
Wednesday
Rain and snow likely before 1pm, then rain. High near 41. Chance of precipitation is 90%.
Wednesday Night
Rain and snow. Low around 28. Chance of precipitation is 80%.
Thursday
A chance of snow. Mostly cloudy, with a high near 35. Chance of precipitation is 50%.
Thursday Night
Snow likely. Mostly cloudy, with a low around 19. Chance of precipitation is 60%.
Friday
A chance of snow. Mostly cloudy, with a high near 32. Chance of precipitation is 50%.
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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:
1:34 am EST Dec 6, 2025
Forecast Valid:
4am EST Dec 6, 2025-6pm EST Dec 12, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation