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: Clear, with a low around 36. Southwest wind around 8 mph.

    Low: 36 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 62. Southwest wind 9 to 13 mph, with gusts as high as 24 mph.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 47. Southwest wind around 6 mph.

    Low: 47 °F

    Clear

  • Tuesday

    Tuesday: A slight chance of showers after 2pm. Partly sunny, with a high near 65. Southwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 65 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 55. South wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 8am, then showers between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 67. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 67 °F

    Showers

  • Wednesday Night

    Wednesday Night: Rain showers before 5am, then rain and snow showers likely. Low around 31. Chance of precipitation is 90%.

    Low: 31 °F

    Showers then
    Rain/Snow

  • Thursday

    Thursday: Snow showers likely before 8am. Partly sunny, with a high near 36. Chance of precipitation is 60%.

    High: 36 °F

    Snow Showers
    Likely then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 36. Southwest wind around 8 mph.
Monday
Sunny, with a high near 62. Southwest wind 9 to 13 mph, with gusts as high as 24 mph.
Monday Night
Clear, with a low around 47. Southwest wind around 6 mph.
Tuesday
A slight chance of showers after 2pm. Partly sunny, with a high near 65. Southwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 55. South wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms before 8am, then showers between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 67. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday Night
Rain showers before 5am, then rain and snow showers likely. Low around 31. Chance of precipitation is 90%.
Thursday
Snow showers likely before 8am. Partly sunny, with a high near 36. Chance of precipitation is 60%.
Thursday Night
Partly cloudy, with a low around 25.
Friday
A chance of snow showers before 2pm, then rain and snow showers likely. Mostly cloudy, with a high near 45. Chance of precipitation is 60%.
Friday Night
Rain and snow showers likely. Mostly cloudy, with a low around 26. Chance of precipitation is 60%.
Saturday
Partly sunny, with a high near 40.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.
Sunday
Rain and snow showers likely. Mostly cloudy, with a high near 50. Chance of precipitation is 60%.
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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:
2:21 am EDT Mar 9, 2026
Forecast Valid:
2am EDT Mar 9, 2026-6pm EDT Mar 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation