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

21°F

-6°C

Humidity 74%
Wind Speed W 13 G 22 mph
Barometer 29.79 in
Dewpoint 14°F (-10°C)
Visibility 7.00 mi
Wind Chill8°F (-13°C)
Last update 30 Dec 8:15 pm EST
Extended Forecast for

3 Miles S Kersey PA

Winter Weather Advisory December 31, 04:00pm until January 1, 04:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: Snow showers likely, mainly before 4am. Cloudy, with a low around 15. West wind 13 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 15 °F

    Snow Showers
    Likely then
    Scattered
    Snow Showers

  • Wednesday

    Wednesday: Snow showers, mainly after 3pm. High near 25. West wind 11 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 25 °F

    Scattered
    Snow Showers
    then Snow
    Showers

  • Wednesday Night

    Wednesday Night: Snow showers, mainly before 1am. The snow could be heavy at times. Low around 12. Wind chill values as low as zero. Northwest wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 12 °F

    Heavy Snow

  • New Year's Day

    New Year's Day: A chance of snow showers before 1pm. Mostly cloudy, with a high near 18. Wind chill values as low as -5. West wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    High: 18 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: A slight chance of snow showers after 1am. Mostly cloudy, with a low around 11. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 11 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 24.

    High: 24 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 15.

    Low: 15 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 23.

    High: 23 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 13.

    Low: 13 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Snow showers likely, mainly before 4am. Cloudy, with a low around 15. West wind 13 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.
Wednesday
Snow showers, mainly after 3pm. High near 25. West wind 11 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Wednesday Night
Snow showers, mainly before 1am. The snow could be heavy at times. Low around 12. Wind chill values as low as zero. Northwest wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
New Year's Day
A chance of snow showers before 1pm. Mostly cloudy, with a high near 18. Wind chill values as low as -5. West wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Thursday Night
A slight chance of snow showers after 1am. Mostly cloudy, with a low around 11. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday
Mostly cloudy, with a high near 24.
Friday Night
Mostly cloudy, with a low around 15.
Saturday
Mostly cloudy, with a high near 23.
Saturday Night
Mostly cloudy, with a low around 13.
Sunday
Partly sunny, with a high near 26.
Sunday Night
A chance of snow showers. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.
Monday
A chance of snow showers. Mostly cloudy, with a high near 32. Chance of precipitation is 40%.
Monday Night
A chance of snow showers. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.
Tuesday
A chance of freezing rain. Mostly cloudy, with a high near 29. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Kersey PA
 41.29°N 78.63°W (Elev. 1896 ft)
Last Update:
7:30 pm EST Dec 30, 2025
Forecast Valid:
8pm EST Dec 30, 2025-6pm EST Jan 6, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation