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

32°F

0°C

Humidity 47%
Wind Speed Calm
Barometer 30.25 in
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Last update 1 Dec 4:15 pm EST
Extended Forecast for

8 Miles NW Cross Fork PA

Winter Weather Advisory December 2, 01:00am until December 2, 01:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: Snow, mainly after 4am. Low around 23. Calm wind becoming southeast around 6 mph after midnight. Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 23 °F

    Mostly Cloudy
    then Snow

  • Tuesday

    Tuesday: Snow, mainly before 1pm. High near 33. Southeast wind around 5 mph becoming calm. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    High: 33 °F

    Snow

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 21. Northwest wind around 6 mph becoming calm after midnight.

    Low: 21 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 34. Calm wind becoming southwest around 6 mph in the morning.

    High: 34 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of snow showers after 1am. Mostly cloudy, with a low around 24. Southwest wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 24 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Thursday

    Thursday: A chance of snow showers, mainly before 1pm. Partly sunny, with a high near 30. Chance of precipitation is 40%.

    High: 30 °F

    Chance Snow
    Showers

  • Thursday Night

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

    Low: 8 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Snow, mainly after 4am. Low around 23. Calm wind becoming southeast around 6 mph after midnight. Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 2 inches possible.
Tuesday
Snow, mainly before 1pm. High near 33. Southeast wind around 5 mph becoming calm. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Tuesday Night
Mostly cloudy, with a low around 21. Northwest wind around 6 mph becoming calm after midnight.
Wednesday
Partly sunny, with a high near 34. Calm wind becoming southwest around 6 mph in the morning.
Wednesday Night
A slight chance of snow showers after 1am. Mostly cloudy, with a low around 24. Southwest wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Thursday
A chance of snow showers, mainly before 1pm. Partly sunny, with a high near 30. Chance of precipitation is 40%.
Thursday Night
Partly cloudy, with a low around 8.
Friday
Mostly sunny, with a high near 28.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
Mostly cloudy, with a high near 36.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.
Sunday
A chance of snow. Mostly cloudy, with a high near 33. Chance of precipitation is 30%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 16. Chance of precipitation is 40%.
Monday
Partly sunny, with a high near 26.
Basemap Options
Click map to change the forecast location
Loading map...
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:
2:26 pm EST Dec 1, 2025
Forecast Valid:
4pm EST Dec 1, 2025-6pm EST Dec 8, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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