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 55%
Wind Speed W 18 G 30 mph
Barometer 30.04 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 28 Nov 2:35 pm EST
Extended Forecast for

3 Miles S Kersey PA

Winter Weather Advisory November 28, 02:39pm until November 29, 01:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory November 28, 02:39pm until November 29, 01:00am

    NOW until 1:00am Sat

    Winter Weather Advisory

  • This Afternoon

    High: 31 °F

    Heavy Snow

  • Tonight

    Tonight: Scattered snow showers, mainly before 9pm. Mostly cloudy, with a low around 21. West wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    Low: 21 °F

    Scattered
    Snow Showers

  • Saturday

    Saturday: A slight chance of snow showers after 4pm. Partly sunny, with a high near 32. West wind 5 to 7 mph becoming light and variable in the afternoon. Chance of precipitation is 20%.

    High: 32 °F

    Partly Sunny
    then Slight
    Chance Snow
    Showers

  • Saturday Night

    Saturday Night: Snow, mainly after 1am. Low around 26. Southeast wind 5 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 26 °F

    Chance Snow
    then Snow

  • Sunday

    Sunday: Snow before 10am, then rain and snow. High near 38. South wind around 15 mph becoming southwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    High: 38 °F

    Rain/Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly after 1am. Mostly cloudy, with a low around 22. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 22 °F

    Snow Likely

  • Monday

    Monday: Mostly cloudy, with a high near 29.

    High: 29 °F

    Mostly Cloudy

  • 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, mainly before 5pm. The snow could be heavy at times. High near 31. West wind around 17 mph, with gusts as high as 39 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Scattered snow showers, mainly before 9pm. Mostly cloudy, with a low around 21. West wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Saturday
A slight chance of snow showers after 4pm. Partly sunny, with a high near 32. West wind 5 to 7 mph becoming light and variable in the afternoon. Chance of precipitation is 20%.
Saturday Night
Snow, mainly after 1am. Low around 26. Southeast wind 5 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Sunday
Snow before 10am, then rain and snow. High near 38. South wind around 15 mph becoming southwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Sunday Night
Snow likely, mainly after 1am. Mostly cloudy, with a low around 22. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday
Mostly cloudy, with a high near 29.
Monday Night
A chance of snow after 1am. Cloudy, with a low around 21. Chance of precipitation is 50%.
Tuesday
Snow likely, mainly before 1pm. Mostly cloudy, with a high near 31. Chance of precipitation is 70%.
Tuesday Night
A chance of snow before 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.
Wednesday
Mostly cloudy, with a high near 30.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
A chance of snow. Mostly cloudy, with a high near 30. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Kersey PA
 41.29°N 78.63°W (Elev. 1896 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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High Temperature

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Chance of Precipitation