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

27°F

-3°C

Humidity 74%
Wind Speed W 10 G 18 mph
Barometer 30.17 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 12 Jan 2:15 am EST
Extended Forecast for

3 Miles S Kersey PA

  • Overnight

    Overnight: Cloudy, with a low around 20. West wind around 15 mph, with gusts as high as 30 mph.

    Low: 20 °F

    Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 33. West wind 13 to 16 mph, with gusts as high as 30 mph.

    High: 33 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26. West wind 10 to 13 mph, with gusts as high as 24 mph.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 39. Southwest wind around 11 mph, with gusts as high as 24 mph.

    High: 39 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Rain likely, mainly after 1am. Mostly cloudy, with a low around 35. Southwest wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Chance Rain
    then Rain
    Likely

  • Wednesday

    Wednesday: Rain likely before 1pm, then rain, possibly mixed with snow. High near 38. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 38 °F

    Rain Likely
    then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain and snow, becoming all snow after 10pm. Low around 21. Chance of precipitation is 80%.

    Low: 21 °F

    Rain/Snow
    then Snow

  • Thursday

    Thursday: Snow likely, mainly before 1pm. Mostly cloudy, with a high near 24. Chance of precipitation is 60%.

    High: 24 °F

    Snow Likely

  • Thursday Night

    Thursday Night: A chance of snow before 1am. Mostly cloudy, with a low around 12. Chance of precipitation is 30%.

    Low: 12 °F

    Chance Snow

Detailed Forecast

Overnight
Cloudy, with a low around 20. West wind around 15 mph, with gusts as high as 30 mph.
Monday
Mostly cloudy, with a high near 33. West wind 13 to 16 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around 26. West wind 10 to 13 mph, with gusts as high as 24 mph.
Tuesday
Partly sunny, with a high near 39. Southwest wind around 11 mph, with gusts as high as 24 mph.
Tuesday Night
Rain likely, mainly after 1am. Mostly cloudy, with a low around 35. Southwest wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain likely before 1pm, then rain, possibly mixed with snow. High near 38. Chance of precipitation is 90%. Little or no snow accumulation expected.
Wednesday Night
Rain and snow, becoming all snow after 10pm. Low around 21. Chance of precipitation is 80%.
Thursday
Snow likely, mainly before 1pm. Mostly cloudy, with a high near 24. Chance of precipitation is 60%.
Thursday Night
A chance of snow before 1am. Mostly cloudy, with a low around 12. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 24.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 17. Chance of precipitation is 30%.
Saturday
Snow showers likely. Mostly cloudy, with a high near 29. Chance of precipitation is 60%.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 14. Chance of precipitation is 40%.
Sunday
A chance of snow showers. Partly sunny, with a high near 20. Chance of precipitation is 40%.
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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:
2:16 am EST Jan 12, 2026
Forecast Valid:
2am EST Jan 12, 2026-6pm EST Jan 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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