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Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast and Breezy

32°F

0°C

Humidity 55%
Wind Speed W 22 G 32 mph
Barometer 30.03 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 28 Nov 2:15 pm EST
Extended Forecast for

8 Miles NW Cross Fork PA

Lake Effect Snow Warning November 28, 02:28pm until November 29, 01:00am
Click here for hazard details and duration
Lake Effect Snow Warning
  •  
    Lake Effect Snow Warning November 28, 02:28pm until November 29, 01:00am

    NOW until 1:00am Sat

    Lake Effect Snow Warning

  • This Afternoon

    High: 34 °F

    Heavy Snow

  • Tonight

    Tonight: Scattered snow showers, mainly before 4am. The snow could be heavy at times. Mostly cloudy, with a low around 23. West wind 6 to 9 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    Low: 23 °F

    Heavy Snow

  • Saturday

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

    High: 34 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Snow, mainly after 1am. Low around 26. Light southeast wind becoming south 5 to 10 mph in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    Low: 26 °F

    Slight Chance
    Snow then
    Snow

  • Sunday

    Sunday: Snow before 1pm, then rain and snow likely. High near 39. South wind around 11 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    High: 39 °F

    Snow then
    Rain/Snow

  • Sunday Night

    Sunday Night: A chance of snow. Mostly cloudy, with a low around 23. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Chance Snow

  • Monday

    Monday: Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of snow after 1am. Cloudy, with a low around 21. Chance of precipitation is 50%.

    Low: 21 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

This Afternoon
Frequent snow showers. The snow could be heavy at times. High near 34. West wind 11 to 13 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
Scattered snow showers, mainly before 4am. The snow could be heavy at times. Mostly cloudy, with a low around 23. West wind 6 to 9 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 34. West wind around 5 mph becoming calm in the afternoon.
Saturday Night
Snow, mainly after 1am. Low around 26. Light southeast wind becoming south 5 to 10 mph in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Sunday
Snow before 1pm, then rain and snow likely. High near 39. South wind around 11 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 23. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Monday
Partly sunny, with a high near 31.
Monday Night
A chance of snow after 1am. Cloudy, with a low around 21. Chance of precipitation is 50%.
Tuesday
Snow likely. Mostly cloudy, with a high near 32. Chance of precipitation is 70%.
Tuesday Night
A chance of snow before 1am. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.
Wednesday
Mostly cloudy, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
A chance of snow. Mostly cloudy, with a high near 32. Chance of precipitation is 30%.
Basemap Options
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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:
1:05 pm EST Nov 28, 2025
Forecast Valid:
2pm EST Nov 28, 2025-6pm EST Dec 4, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation