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.

Partly Cloudy

12°F

-11°C

Humidity 85%
Wind Speed Calm
Barometer 30.20 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Last update 5 Dec 12:55 am EST
Extended Forecast for

5 Miles SSW Cross Fork PA

  • Overnight

    Overnight: Mostly clear, with a low around 7. Calm wind.

    Low: 7 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 27. Wind chill values as low as zero. South wind 3 to 6 mph.

    High: 27 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 22. Light south wind.

    Low: 22 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 37. Southwest wind 5 to 7 mph.

    High: 37 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 24. West wind around 6 mph becoming calm after midnight.

    Low: 24 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of snow after 1pm. Mostly cloudy, with a high near 35. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.

    High: 35 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday Night

    Sunday Night: A chance of snow before 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 40%.

    Low: 16 °F

    Chance Snow

  • Monday

    Monday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 7. Calm wind.
Friday
Increasing clouds, with a high near 27. Wind chill values as low as zero. South wind 3 to 6 mph.
Friday Night
Mostly cloudy, with a low around 22. Light south wind.
Saturday
Mostly cloudy, with a high near 37. Southwest wind 5 to 7 mph.
Saturday Night
Mostly cloudy, with a low around 24. West wind around 6 mph becoming calm after midnight.
Sunday
A chance of snow after 1pm. Mostly cloudy, with a high near 35. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.
Sunday Night
A chance of snow before 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 24.
Monday Night
Partly cloudy, with a low around 8.
Tuesday
A chance of snow after 1pm. Mostly cloudy, with a high near 32. Chance of precipitation is 50%.
Tuesday Night
A chance of snow. Cloudy, with a low around 25. Chance of precipitation is 50%.
Wednesday
Rain and snow. High near 39. Chance of precipitation is 80%.
Wednesday Night
Rain and snow. Low around 28. Chance of precipitation is 80%.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 34. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Cross Fork PA
 41.41°N 77.87°W (Elev. 1736 ft)
Last Update:
1:06 am EST Dec 5, 2025
Forecast Valid:
1am EST Dec 5, 2025-6pm EST Dec 11, 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