Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

18°F

-8°C

Humidity 73%
Wind Speed W 15 G 23 mph
Barometer 29.66 in
Dewpoint 10°F (-12°C)
Visibility 7.00 mi
Wind Chill4°F (-16°C)
Last update 15 Jan 11:35 pm EST
Extended Forecast for

4 Miles NW Sinnamahoning PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 14. Wind chill values as low as zero. West wind 13 to 15 mph, with gusts as high as 30 mph.

    Low: 14 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of snow after 4pm.  Partly sunny, with a high near 28. West wind 7 to 10 mph becoming south in the afternoon. Winds could gust as high as 22 mph.  Chance of precipitation is 30%.

    High: 28 °F

    Partly Sunny
    then Chance
    Snow

  • Friday Night

    Friday Night: A chance of snow, mainly after 1am.  Mostly cloudy, with a low around 25. South wind around 8 mph, with gusts as high as 20 mph.  Chance of precipitation is 40%.

    Low: 25 °F

    Chance Snow

  • Saturday

    Saturday: Snow showers.  High near 35. South wind around 8 mph becoming southwest in the afternoon.  Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 35 °F

    Snow Showers

  • Saturday Night

    Saturday Night: A chance of snow showers before 1am.  Mostly cloudy, with a low around 15. West wind 7 to 9 mph, with gusts as high as 20 mph.  Chance of precipitation is 30%.

    Low: 15 °F

    Chance Snow
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 21.

    High: 21 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 13.

    Low: 13 °F

    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: A chance of snow showers after 1pm.  Mostly cloudy, with a high near 21. Chance of precipitation is 30%.

    High: 21 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 1.

    Low: 1 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 14. Wind chill values as low as zero. West wind 13 to 15 mph, with gusts as high as 30 mph.
Friday
A chance of snow after 4pm. Partly sunny, with a high near 28. West wind 7 to 10 mph becoming south in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 30%.
Friday Night
A chance of snow, mainly after 1am. Mostly cloudy, with a low around 25. South wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Saturday
Snow showers. High near 35. South wind around 8 mph becoming southwest in the afternoon. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
A chance of snow showers before 1am. Mostly cloudy, with a low around 15. West wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Sunday
Partly sunny, with a high near 21.
Sunday Night
Mostly cloudy, with a low around 13.
M.L.King Day
A chance of snow showers after 1pm. Mostly cloudy, with a high near 21. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 1.
Tuesday
Partly sunny and cold, with a high near 10.
Tuesday Night
Mostly cloudy, with a low around 4.
Wednesday
A chance of snow showers. Mostly cloudy, with a high near 24. Chance of precipitation is 30%.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 16. Chance of precipitation is 40%.
Thursday
Partly sunny, with a high near 26.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Sinnamahoning PA
 41.44°N 78.1°W (Elev. 1818 ft)
7:06 pm EST Jan 15, 2026
11pm EST Jan 15, 2026-6pm EST Jan 22, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database