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

21°F

-6°C

Humidity 86%
Wind Speed W 6 mph
Barometer 29.94 in
Dewpoint 18°F (-8°C)
Visibility 3.00 mi
Wind Chill13°F (-11°C)
Last update 3 Jan 11:35 pm EST
Extended Forecast for

3 Miles S Kersey PA

  • Tonight

    Tonight: A chance of snow, mainly between 1am and 5am. Cloudy, with a low around 16. West wind around 6 mph. Chance of precipitation is 30%.

    Low: 16 °F

    Chance Snow

  • Sunday

    Sunday: Cloudy, with a high near 26. West wind 7 to 10 mph, with gusts as high as 20 mph.

    High: 26 °F

    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 15. West wind around 6 mph becoming calm in the evening.

    Low: 15 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of snow before 1pm. Mostly cloudy, with a high near 34. South wind 3 to 7 mph. Chance of precipitation is 30%.

    High: 34 °F

    Chance Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 23. Southwest wind around 5 mph.

    Low: 23 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain after 1pm. Mostly cloudy, with a high near 39. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 39 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 1am. Cloudy, with a low around 35. Chance of precipitation is 70%.

    Low: 35 °F

    Rain Likely

  • Wednesday

    Wednesday: A chance of rain before 1pm. Mostly cloudy, with a high near 42. Chance of precipitation is 30%.

    High: 42 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of snow, mainly between 1am and 5am. Cloudy, with a low around 16. West wind around 6 mph. Chance of precipitation is 30%.
Sunday
Cloudy, with a high near 26. West wind 7 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 15. West wind around 6 mph becoming calm in the evening.
Monday
A chance of snow before 1pm. Mostly cloudy, with a high near 34. South wind 3 to 7 mph. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 23. Southwest wind around 5 mph.
Tuesday
A chance of rain after 1pm. Mostly cloudy, with a high near 39. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Rain likely, mainly before 1am. Cloudy, with a low around 35. Chance of precipitation is 70%.
Wednesday
A chance of rain before 1pm. Mostly cloudy, with a high near 42. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
Mostly cloudy, with a high near 41.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 36. Chance of precipitation is 50%.
Friday
Rain likely. Mostly cloudy, with a high near 48. Chance of precipitation is 60%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 38. Chance of precipitation is 50%.
Saturday
A chance of showers. Mostly cloudy, with a high near 44. Chance of precipitation is 50%.
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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:
7:06 pm EST Jan 3, 2026
Forecast Valid:
11pm EST Jan 3, 2026-6pm EST Jan 10, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation