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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

3 Miles S Kersey PA

  • Overnight

    Overnight: Mostly clear, with a low around 47. Southwest wind around 7 mph.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers, mainly between 2pm and 5pm. Partly sunny, with a high near 65. Southwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    High: 65 °F

    Partly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 56. Southwest wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. Some of the storms could be severe. High near 68. Southwest wind 10 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 68 °F

    Severe
    Thunderstorms

  • Wednesday Night

    Wednesday Night: Rain showers before 2am, then a chance of rain and snow showers. Some thunder is also possible. Low around 30. West wind around 17 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Severe
    Thunderstorms
    then
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow showers before 8am. Partly sunny, with a high near 37. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 37 °F

    Chance
    Rain/Snow
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

  • Friday

    Friday: A chance of rain and snow showers. Mostly cloudy, with a high near 43. Chance of precipitation is 50%.

    High: 43 °F

    Chance
    Rain/Snow

  • Friday Night

    Friday Night: A chance of rain and snow showers before 2am. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.

    Low: 26 °F

    Chance
    Rain/Snow

Detailed Forecast

Overnight
Mostly clear, with a low around 47. Southwest wind around 7 mph.
Tuesday
A chance of showers, mainly between 2pm and 5pm. Partly sunny, with a high near 65. Southwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 56. Southwest wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. Some of the storms could be severe. High near 68. Southwest wind 10 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Rain showers before 2am, then a chance of rain and snow showers. Some thunder is also possible. Low around 30. West wind around 17 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Thursday
A chance of rain and snow showers before 8am. Partly sunny, with a high near 37. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly clear, with a low around 24.
Friday
A chance of rain and snow showers. Mostly cloudy, with a high near 43. Chance of precipitation is 50%.
Friday Night
A chance of rain and snow showers before 2am. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 39.
Saturday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.
Sunday
A chance of showers. Mostly cloudy, with a high near 54. Chance of precipitation is 40%.
Sunday Night
Showers. Low around 27. Chance of precipitation is 80%.
Monday
Rain and snow showers. High near 34. Chance of precipitation is 80%.
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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:
2:05 am EDT Mar 10, 2026
Forecast Valid:
2am EDT Mar 10, 2026-6pm EDT Mar 16, 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