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

28°F

-2°C

Humidity 64%
Wind Speed S 6 mph
Barometer 29.84 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 9 Dec 3:15 pm EST
Extended Forecast for

8 Miles NW Cross Fork PA

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

  • This Afternoon

    This Afternoon: A chance of snow. Cloudy, with a high near 25. South wind around 9 mph. Chance of precipitation is 40%.

    High: 25 °F

    Chance Snow

  • Tonight

    Tonight: Snow likely, mainly after 4am. Cloudy, with a low around 24. South wind around 7 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 24 °F

    Cloudy then
    Snow Likely

  • Wednesday

    Wednesday: Snow. High near 37. South wind around 10 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    High: 37 °F

    Snow

  • Wednesday Night

    Wednesday Night: Snow showers likely, mainly between 7pm and 1am. Mostly cloudy, with a low around 20. West wind 8 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Snow Showers
    Likely

  • Thursday

    Thursday: A chance of snow showers. Mostly cloudy, with a high near 27. West wind around 11 mph, with gusts as high as 31 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 27 °F

    Chance Snow
    Showers

  • Thursday Night

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

    Low: 19 °F

    Chance Snow
    Showers

  • Friday

    Friday: A chance of snow after 1pm. Mostly cloudy, with a high near 29. Chance of precipitation is 30%.

    High: 29 °F

    Mostly Cloudy
    then Chance
    Snow

  • Friday Night

    Friday Night: A chance of snow. Mostly cloudy, with a low around 16. Chance of precipitation is 50%.

    Low: 16 °F

    Chance Snow

  • Saturday

    Saturday: A chance of snow. Mostly cloudy, with a high near 29. Chance of precipitation is 50%.

    High: 29 °F

    Chance Snow

Detailed Forecast

This Afternoon
A chance of snow. Cloudy, with a high near 25. South wind around 9 mph. Chance of precipitation is 40%.
Tonight
Snow likely, mainly after 4am. Cloudy, with a low around 24. South wind around 7 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Wednesday
Snow. High near 37. South wind around 10 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Wednesday Night
Snow showers likely, mainly between 7pm and 1am. Mostly cloudy, with a low around 20. West wind 8 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 27. West wind around 11 mph, with gusts as high as 31 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 19. Chance of precipitation is 40%.
Friday
A chance of snow after 1pm. Mostly cloudy, with a high near 29. Chance of precipitation is 30%.
Friday Night
A chance of snow. Mostly cloudy, with a low around 16. Chance of precipitation is 50%.
Saturday
A chance of snow. Mostly cloudy, with a high near 29. Chance of precipitation is 50%.
Saturday Night
Snow likely. Cloudy, with a low around 18. Chance of precipitation is 60%.
Sunday
A chance of snow. Mostly cloudy, with a high near 24. Chance of precipitation is 50%.
Sunday Night
Mostly cloudy, with a low around 10.
Monday
Partly sunny, with a high near 24.
Monday Night
A chance of snow. Mostly cloudy, with a low around 11. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
8 Miles NW Cross Fork PA
 41.55°N 77.94°W (Elev. 1726 ft)
Last Update:
2:21 pm EST Dec 9, 2025
Forecast Valid:
3pm EST Dec 9, 2025-6pm EST Dec 16, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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