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Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

23°F

-5°C

Humidity 80%
Wind Speed W 14 G 21 mph
Barometer 29.72 in
Dewpoint 18°F (-8°C)
Visibility 7.00 mi
Wind Chill11°F (-12°C)
Last update 11 Dec 8:15 am EST
Extended Forecast for

Saint Marys PA

Winter Weather Advisory December 11, 08:19am until December 12, 04:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 11, 08:19am until December 12, 04:00am

    NOW until 4:00am Fri

    Winter Weather Advisory

  • Today

    High: 24 °F

    Snow Showers
    Likely

  • Tonight

    Tonight: A chance of snow showers, mainly before 11pm. Mostly cloudy, with a low around 17. West wind 7 to 10 mph, with gusts as high as 26 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 17 °F

    Chance Snow
    Showers then
    Slight Chance
    Snow Showers

  • Friday

    Friday: Mostly cloudy, with a high near 27. West wind 3 to 6 mph.

    High: 27 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A chance of snow showers after 1am. Mostly cloudy, with a low around 12. Calm wind. Chance of precipitation is 40%.

    Low: 12 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Saturday

    Saturday: Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 28. Southwest wind 6 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 28 °F

    Snow Showers
    Likely

  • Saturday Night

    Saturday Night: Snow showers likely. Mostly cloudy, with a low around 10. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 10 °F

    Snow Showers
    Likely

  • Sunday

    Sunday: Snow showers likely. Mostly cloudy, with a high near 19. Chance of precipitation is 60%.

    High: 19 °F

    Snow Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of snow showers before 1am. Mostly cloudy, with a low around 8. Chance of precipitation is 40%.

    Low: 8 °F

    Chance Snow
    Showers

Detailed Forecast

Today
Snow showers likely, mainly between 11am and 4pm. Mostly cloudy, with a high near 24. West wind 13 to 15 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
A chance of snow showers, mainly before 11pm. Mostly cloudy, with a low around 17. West wind 7 to 10 mph, with gusts as high as 26 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Friday
Mostly cloudy, with a high near 27. West wind 3 to 6 mph.
Friday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 12. Calm wind. Chance of precipitation is 40%.
Saturday
Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 28. Southwest wind 6 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday Night
Snow showers likely. Mostly cloudy, with a low around 10. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Sunday
Snow showers likely. Mostly cloudy, with a high near 19. Chance of precipitation is 60%.
Sunday Night
A chance of snow showers before 1am. Mostly cloudy, with a low around 8. Chance of precipitation is 40%.
Monday
A chance of snow showers after 1pm. Mostly cloudy, with a high near 21. Chance of precipitation is 30%.
Monday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 11. Chance of precipitation is 30%.
Tuesday
Mostly cloudy, with a high near 27.
Tuesday Night
Mostly cloudy, with a low around 14.
Wednesday
A chance of showers. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys PA
 41.44°N 78.57°W (Elev. 1795 ft)
Last Update:
7:11 am EST Dec 11, 2025
Forecast Valid:
8am EST Dec 11, 2025-6pm EST Dec 17, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation