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Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

19°F

-7°C

Humidity 53%
Wind Speed W 16 G 26 mph
Barometer 29.93 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill4°F (-16°C)
Last update 19 Jan 4:35 pm EST
Extended Forecast for

4 Miles SE Sinnamahoning PA

Cold Weather Advisory January 19, 09:00pm until January 20, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory
  • Tonight

    Tonight: Mostly cloudy, with a low around 2. Wind chill values as low as -15. West wind 11 to 16 mph, with gusts as high as 36 mph.

    Low: 2 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 13. Wind chill values as low as -15. West wind 10 to 13 mph, with gusts as high as 30 mph.

    High: 13 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 7. Wind chill values as low as -5. West wind 6 to 8 mph, with gusts as high as 20 mph.

    Low: 7 °F

    Mostly Clear

  • Wednesday

    Wednesday: Snow showers likely after 1pm.  Partly sunny, with a high near 32. Wind chill values as low as -5. South wind 7 to 10 mph, with gusts as high as 24 mph.  Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    High: 32 °F

    Partly Sunny
    then Snow
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Snow likely, mainly before 1am.  Mostly cloudy, with a low around 24. Southwest wind around 11 mph, with gusts as high as 26 mph.  Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 24 °F

    Snow Likely

  • Thursday

    Thursday: Partly sunny, with a high near 32.

    High: 32 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 18.

    High: 18 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 0.

    Low: 0 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 2. Wind chill values as low as -15. West wind 11 to 16 mph, with gusts as high as 36 mph.
Tuesday
Mostly sunny, with a high near 13. Wind chill values as low as -15. West wind 10 to 13 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 7. Wind chill values as low as -5. West wind 6 to 8 mph, with gusts as high as 20 mph.
Wednesday
Snow showers likely after 1pm. Partly sunny, with a high near 32. Wind chill values as low as -5. South wind 7 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Wednesday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 24. Southwest wind around 11 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Thursday
Partly sunny, with a high near 32.
Thursday Night
Partly cloudy, with a low around 11.
Friday
Partly sunny, with a high near 18.
Friday Night
Mostly cloudy, with a low around 0.
Saturday
Mostly cloudy and cold, with a high near 10.
Saturday Night
Mostly cloudy, with a low around -1.
Sunday
A chance of snow showers. Partly sunny, with a high near 13. Chance of precipitation is 30%.
Sunday Night
A chance of snow showers. Partly cloudy, with a low around 1. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 17.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Sinnamahoning PA
 41.34°N 78°W (Elev. 1906 ft)
1:16 pm EST Jan 19, 2026
5pm EST Jan 19, 2026-6pm EST Jan 26, 2026
 
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Additional Resources

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