National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

30°F

-1°C

Humidity 93%
Wind Speed W 6 mph
Barometer 30.05 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 27 Dec 9:35 am EST
Extended Forecast for

3 Miles S Kersey PA

  • Today

    Today: Partly sunny, with a high near 33. North wind around 6 mph becoming calm in the afternoon.

    High: 33 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 23. Calm wind becoming southeast around 6 mph after midnight.

    Low: 23 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of freezing rain before 10am, then rain showers. High near 45. Southeast wind around 7 mph. Chance of precipitation is 90%. Little or no ice accumulation expected.

    High: 45 °F

    Chance
    Rain/Freezing
    Rain then
    Showers

  • Sunday Night

    Sunday Night: Showers. Low around 37. Southeast wind 8 to 15 mph becoming southwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 37 °F

    Showers

  • Monday

    Monday: Rain showers before 10am, then rain and snow showers between 10am and 4pm, then snow showers likely after 4pm. High near 52. Breezy, with a southwest wind 18 to 25 mph, with gusts as high as 50 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 52 °F

    Rain/Snow and
    Breezy

  • Monday Night

    Monday Night: Snow showers. Low around 18. Windy. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 18 °F

    Snow Showers
    and Windy

  • Tuesday

    Tuesday: Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 22. Breezy. Chance of precipitation is 60%.

    High: 22 °F

    Snow Showers
    Likely and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of snow showers after 1am. Mostly cloudy, with a low around 17. Breezy. Chance of precipitation is 40%.

    Low: 17 °F

    Mostly Cloudy
    and Breezy
    then Chance
    Snow Showers

  • Wednesday

    Wednesday: Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 26. Chance of precipitation is 60%.

    High: 26 °F

    Snow Showers
    Likely

Detailed Forecast

Today
Partly sunny, with a high near 33. North wind around 6 mph becoming calm in the afternoon.
Tonight
Mostly cloudy, with a low around 23. Calm wind becoming southeast around 6 mph after midnight.
Sunday
A chance of freezing rain before 10am, then rain showers. High near 45. Southeast wind around 7 mph. Chance of precipitation is 90%. Little or no ice accumulation expected.
Sunday Night
Showers. Low around 37. Southeast wind 8 to 15 mph becoming southwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Rain showers before 10am, then rain and snow showers between 10am and 4pm, then snow showers likely after 4pm. High near 52. Breezy, with a southwest wind 18 to 25 mph, with gusts as high as 50 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Monday Night
Snow showers. Low around 18. Windy. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Tuesday
Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 22. Breezy. Chance of precipitation is 60%.
Tuesday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 17. Breezy. Chance of precipitation is 40%.
Wednesday
Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 26. Chance of precipitation is 60%.
Wednesday Night
Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 17. Chance of precipitation is 60%.
New Year's Day
A chance of snow showers. Mostly cloudy, with a high near 22. Chance of precipitation is 50%.
Thursday Night
Mostly cloudy, with a low around 9.
Friday
Partly sunny, with a high near 18.
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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:
7:06 am EST Dec 27, 2025
Forecast Valid:
10am EST Dec 27, 2025-6pm EST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation