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

Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

39°F

4°C

Humidity 93%
Wind Speed SE 7 mph
Barometer 29.80 in
Dewpoint 37°F (3°C)
Visibility 7.00 mi
Wind Chill34°F (1°C)
Last update 10 Jan 6:35 pm EST
Extended Forecast for

6 Miles ESE Sinnamahoning PA

  • Tonight

    Tonight: Rain, mainly before 11pm. Low around 28. Southeast wind 8 to 14 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 28 °F

    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: A chance of snow showers, mainly after 11am. Increasing clouds, with a high near 33. West wind 11 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.

    High: 33 °F

    Chance Snow
    Showers

  • Sunday Night

    Sunday Night: A slight chance of snow showers before 10pm. Mostly cloudy, with a low around 25. Breezy, with a west wind 17 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.

    Low: 25 °F

    Breezy.
    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 34. West wind around 14 mph, with gusts as high as 26 mph.

    High: 34 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 28. West wind 9 to 15 mph, with gusts as high as 23 mph.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 41.

    High: 41 °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: A chance of rain before 1pm, then rain and snow likely. Mostly cloudy, with a high near 40. Chance of precipitation is 60%.

    High: 40 °F

    Chance Rain
    then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: A chance of snow. Mostly cloudy, with a low around 19. Chance of precipitation is 40%.

    Low: 19 °F

    Chance Snow

Detailed Forecast

Tonight
Rain, mainly before 11pm. Low around 28. Southeast wind 8 to 14 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
A chance of snow showers, mainly after 11am. Increasing clouds, with a high near 33. West wind 11 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.
Sunday Night
A slight chance of snow showers before 10pm. Mostly cloudy, with a low around 25. Breezy, with a west wind 17 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 34. West wind around 14 mph, with gusts as high as 26 mph.
Monday Night
Mostly cloudy, with a low around 28. West wind 9 to 15 mph, with gusts as high as 23 mph.
Tuesday
Partly sunny, with a high near 41.
Tuesday Night
A chance of rain after 1am. Mostly cloudy, with a low around 35. Chance of precipitation is 30%.
Wednesday
A chance of rain before 1pm, then rain and snow likely. Mostly cloudy, with a high near 40. Chance of precipitation is 60%.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 19. Chance of precipitation is 40%.
Thursday
Mostly sunny, with a high near 25.
Thursday Night
Partly cloudy, with a low around 16.
Friday
A chance of snow showers. Partly sunny, with a high near 29. 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 31. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ESE Sinnamahoning PA
 41.35°N 77.94°W (Elev. 1998 ft)
Last Update:
5:06 pm EST Jan 10, 2026
Forecast Valid:
6pm EST Jan 10, 2026-6pm EST Jan 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation