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.

Mostly Cloudy

9°F

-13°C

Humidity 72%
Wind Speed Calm
Barometer 30.07 in
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Last update 9 Dec 9:15 am EST
Extended Forecast for

8 Miles WSW Galeton PA

Winter Weather Advisory December 10, 01:00am until December 10, 10:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Today

    Today: A slight chance of snow after 3pm. Mostly cloudy, with a high near 28. Wind chill values as low as zero. South wind 6 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 28 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Tonight

    Tonight: Snow likely, mainly after 5am. Cloudy, with a low around 22. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: 22 °F

    Cloudy then
    Snow Likely

  • Wednesday

    Wednesday: Snow before 1pm, then snow, possibly mixed with rain. The snow could be heavy at times. High near 36. South wind 10 to 13 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    High: 36 °F

    Heavy Snow
    then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Snow showers likely, mainly before 1am. Mostly cloudy, with a low around 19. West wind around 11 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 19 °F

    Snow Showers
    Likely

  • Thursday

    Thursday: A chance of snow showers. Mostly cloudy, with a high near 26. West wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 26 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: A chance of snow showers, mainly before 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.

    Low: 18 °F

    Chance Snow
    Showers

  • Friday

    Friday: A chance of snow showers after 1pm. Mostly cloudy, with a high near 27. Chance of precipitation is 30%.

    High: 27 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Friday Night

    Friday Night: Snow likely. Mostly cloudy, with a low around 17. Chance of precipitation is 60%.

    Low: 17 °F

    Snow Likely

  • Saturday

    Saturday: A chance of snow. Mostly cloudy, with a high near 27. Chance of precipitation is 40%.

    High: 27 °F

    Chance Snow

Detailed Forecast

Today
A slight chance of snow after 3pm. Mostly cloudy, with a high near 28. Wind chill values as low as zero. South wind 6 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tonight
Snow likely, mainly after 5am. Cloudy, with a low around 22. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Wednesday
Snow before 1pm, then snow, possibly mixed with rain. The snow could be heavy at times. High near 36. South wind 10 to 13 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Wednesday Night
Snow showers likely, mainly before 1am. Mostly cloudy, with a low around 19. West wind around 11 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 26. West wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Thursday Night
A chance of snow showers, mainly before 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.
Friday
A chance of snow showers after 1pm. Mostly cloudy, with a high near 27. Chance of precipitation is 30%.
Friday Night
Snow likely. Mostly cloudy, with a low around 17. Chance of precipitation is 60%.
Saturday
A chance of snow. Mostly cloudy, with a high near 27. Chance of precipitation is 40%.
Saturday Night
A chance of snow. Cloudy, with a low around 13. Chance of precipitation is 50%.
Sunday
A chance of snow showers. Mostly cloudy, with a high near 21. Chance of precipitation is 40%.
Sunday Night
Mostly cloudy, with a low around 7.
Monday
Partly sunny, with a high near 22.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles WSW Galeton PA
 41.69°N 77.77°W (Elev. 1699 ft)
Last Update:
7:33 am EST Dec 9, 2025
Forecast Valid:
9am EST Dec 9, 2025-6pm EST Dec 15, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation