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Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Mostly Cloudy

9°F

-13°C

Humidity 66%
Wind Speed W 13 G 17 mph
Barometer 30.25 in
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Wind Chill-7°F (-22°C)
Last update 20 Jan 10:35 am EST
Extended Forecast for

3 Miles S Kersey PA

Winter Storm Watch January 21, 12:00pm until January 22, 10:00am
Cold Weather Advisory January 20, 10:57am until January 20, 12:00pm
Click here for hazard details and duration
Winter Storm Watch
Cold Weather Advisory
  •  
    Cold Weather Advisory January 20, 10:57am until January 20, 12:00pm

    NOW until 12:00pm Tue

    Cold Weather Advisory

  • Today

    High: 11 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 6. Wind chill values as low as -5. West wind 6 to 9 mph.

    Low: 6 °F

    Mostly Clear

  • Wednesday

    Wednesday: Snow showers, mainly after 1pm.  High near 32. Wind chill values as low as -5. South wind 7 to 13 mph, with gusts as high as 25 mph.  Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    High: 32 °F

    Slight Chance
    Snow Showers
    then Snow
    Showers

  • Wednesday Night

    Wednesday Night: Snow showers likely, mainly before 1am.  Mostly cloudy, with a low around 24. Southwest wind 13 to 15 mph, with gusts as high as 28 mph.  Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    Low: 24 °F

    Snow Showers
    Likely

  • Thursday

    Thursday: A slight chance of snow showers before 1pm.  Partly sunny, with a high near 29. West wind 14 to 16 mph, with gusts as high as 31 mph.  Chance of precipitation is 20%.

    High: 29 °F

    Slight Chance
    Snow Showers

  • Thursday Night

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

    Low: 9 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 15.

    High: 15 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -3.

    Low: -3 °F

    Mostly Cloudy

Detailed Forecast

Today
Partly sunny, with a high near 11. Wind chill values as low as -15. West wind 13 to 15 mph, with gusts as high as 28 mph.
Tonight
Mostly clear, with a low around 6. Wind chill values as low as -5. West wind 6 to 9 mph.
Wednesday
Snow showers, mainly after 1pm. High near 32. Wind chill values as low as -5. South wind 7 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Wednesday Night
Snow showers likely, mainly before 1am. Mostly cloudy, with a low around 24. Southwest wind 13 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Thursday
A slight chance of snow showers before 1pm. Partly sunny, with a high near 29. West wind 14 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 9.
Friday
Mostly cloudy, with a high near 15.
Friday Night
Mostly cloudy, with a low around -3.
Saturday
Mostly cloudy and cold, with a high near 8.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 1. Chance of precipitation is 40%.
Sunday
A chance of snow. Mostly cloudy, with a high near 13. Chance of precipitation is 50%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 1. Chance of precipitation is 30%.
Monday
A chance of snow showers. Partly sunny, with a high near 16. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Kersey PA
 41.29°N 78.63°W (Elev. 1896 ft)
7:06 am EST Jan 20, 2026
10am EST Jan 20, 2026-6pm EST Jan 26, 2026
 
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