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

43°F

6°C

Humidity 87%
Wind Speed W 18 G 28 mph
Barometer 29.81 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 10 Jan 10:55 pm EST
Extended Forecast for

3 Miles NNE Sinnamahoning PA

  • Tonight

    Tonight: Rain likely, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 29. West wind 7 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 29 °F

    Rain Likely

  • Sunday

    Sunday: Snow showers likely, mainly after 11am. The snow could be heavy at times. Mostly cloudy, with a high near 34. West wind 7 to 15 mph, with gusts as high as 33 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 34 °F

    Heavy Snow

  • Sunday Night

    Sunday Night: Isolated snow showers before midnight. Mostly cloudy, with a low around 25. West wind 11 to 16 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.

    Low: 25 °F

    Isolated Snow
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 36. West wind 8 to 11 mph, with gusts as high as 25 mph.

    High: 36 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 28. West wind around 7 mph, with gusts as high as 22 mph.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain after 1am. Mostly cloudy, with a low around 35. Chance of precipitation is 30%.

    Low: 35 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday

    Wednesday: Rain likely, mainly after 1pm. Mostly cloudy, with a high near 41. Chance of precipitation is 60%.

    High: 41 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: A chance of rain and snow before 1am, then a chance of snow. Mostly cloudy, with a low around 19. Chance of precipitation is 40%.

    Low: 19 °F

    Chance
    Rain/Snow

Detailed Forecast

Tonight
Rain likely, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 29. West wind 7 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Snow showers likely, mainly after 11am. The snow could be heavy at times. Mostly cloudy, with a high near 34. West wind 7 to 15 mph, with gusts as high as 33 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Sunday Night
Isolated snow showers before midnight. Mostly cloudy, with a low around 25. West wind 11 to 16 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.
Monday
Partly sunny, with a high near 36. West wind 8 to 11 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 28. West wind around 7 mph, with gusts as high as 22 mph.
Tuesday
Partly sunny, with a high near 42.
Tuesday Night
A chance of rain after 1am. Mostly cloudy, with a low around 35. Chance of precipitation is 30%.
Wednesday
Rain likely, mainly after 1pm. Mostly cloudy, with a high near 41. Chance of precipitation is 60%.
Wednesday Night
A chance of rain and snow before 1am, then a chance of snow. Mostly cloudy, with a low around 19. Chance of precipitation is 40%.
Thursday
Partly sunny, with a high near 26.
Thursday Night
Mostly cloudy, with a low around 16.
Friday
A chance of snow showers. Partly sunny, with a high near 31. Chance of precipitation is 30%.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.
Saturday
A chance of snow showers. Mostly cloudy, with a high near 32. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Sinnamahoning PA
 41.43°N 78.02°W (Elev. 1565 ft)
Last Update:
9:56 pm EST Jan 10, 2026
Forecast Valid:
11pm EST Jan 10, 2026-6pm EST Jan 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation