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

30°F

-1°C

Humidity 64%
Wind Speed NW 7 mph
Barometer 30.36 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 1 Dec 9:15 am EST
Extended Forecast for

2 Miles NNW Weedville PA

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

  • Today

    Today: Partly sunny, with a high near 34. North wind around 5 mph becoming calm in the afternoon.

    High: 34 °F

    Partly Sunny

  • Tonight

    Tonight: Snow likely, mainly after 4am. The snow could be heavy at times. Mostly cloudy, with a low around 23. Calm wind becoming southeast around 6 mph after midnight. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 23 °F

    Mostly Cloudy
    then Heavy
    Snow

  • Tuesday

    Tuesday: Snow, mainly before 1pm. The snow could be heavy at times. High near 37. Calm wind becoming northwest around 6 mph in the afternoon. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 37 °F

    Heavy Snow

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 20. Northwest wind around 5 mph becoming calm in the evening.

    Low: 20 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 34. Southwest wind 3 to 8 mph.

    High: 34 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A chance of snow showers after 1am. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.

    Low: 23 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Thursday

    Thursday: A chance of snow showers before 1pm. Partly sunny, with a high near 32. Chance of precipitation is 40%.

    High: 32 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 9.

    Low: 9 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 34. North wind around 5 mph becoming calm in the afternoon.
Tonight
Snow likely, mainly after 4am. The snow could be heavy at times. Mostly cloudy, with a low around 23. Calm wind becoming southeast around 6 mph after midnight. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Tuesday
Snow, mainly before 1pm. The snow could be heavy at times. High near 37. Calm wind becoming northwest around 6 mph in the afternoon. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Tuesday Night
Mostly cloudy, with a low around 20. Northwest wind around 5 mph becoming calm in the evening.
Wednesday
Mostly cloudy, with a high near 34. Southwest wind 3 to 8 mph.
Wednesday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.
Thursday
A chance of snow showers before 1pm. Partly sunny, with a high near 32. Chance of precipitation is 40%.
Thursday Night
Partly cloudy, with a low around 9.
Friday
Partly sunny, with a high near 31.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 20. Chance of precipitation is 50%.
Saturday
A chance of rain and snow showers. Mostly cloudy, with a high near 36. Chance of precipitation is 50%.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 25. Chance of precipitation is 50%.
Sunday
A chance of rain and snow showers. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Weedville PA
 41.3°N 78.51°W (Elev. 1306 ft)
Last Update:
8:46 am EST Dec 1, 2025
Forecast Valid:
9am EST Dec 1, 2025-6pm EST Dec 7, 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