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: Rain. Patchy fog. Low around 41. Calm wind. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Rain and
    Patchy Fog

  • Thursday

    Thursday: Rain. Patchy fog before 8am. High near 50. Calm wind becoming southeast around 6 mph in the morning. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 50 °F

    Rain and
    Patchy Fog

  • Thursday Night

    Thursday Night: Rain, mainly before 10pm. Low around 45. Southeast wind 5 to 7 mph becoming south after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 45 °F

    Rain then
    Chance Rain

  • Friday

    Friday: A slight chance of rain before 1pm. Mostly cloudy, with a high near 56. South wind 6 to 8 mph. Chance of precipitation is 20%.

    High: 56 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: A chance of rain, mainly after 1am. Mostly cloudy, with a low around 51. Southeast wind 6 to 9 mph. Chance of precipitation is 30%.

    Low: 51 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain before 1pm, then showers between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 67. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 67 °F

    Chance Rain
    then Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 7pm, then showers likely between 7pm and 1am. Mostly cloudy, with a low around 42. Chance of precipitation is 70%.

    Low: 42 °F

    Showers
    Likely

  • Sunday

    Sunday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Overnight
Rain. Patchy fog. Low around 41. Calm wind. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain. Patchy fog before 8am. High near 50. Calm wind becoming southeast around 6 mph in the morning. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
Rain, mainly before 10pm. Low around 45. Southeast wind 5 to 7 mph becoming south after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A slight chance of rain before 1pm. Mostly cloudy, with a high near 56. South wind 6 to 8 mph. Chance of precipitation is 20%.
Friday Night
A chance of rain, mainly after 1am. Mostly cloudy, with a low around 51. Southeast wind 6 to 9 mph. Chance of precipitation is 30%.
Saturday
A chance of rain before 1pm, then showers between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 67. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers likely and possibly a thunderstorm before 7pm, then showers likely between 7pm and 1am. Mostly cloudy, with a low around 42. Chance of precipitation is 70%.
Sunday
Mostly sunny, with a high near 54.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
A chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 40%.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Wednesday
Showers likely. Mostly cloudy, with a high near 68. Chance of precipitation is 70%.
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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:
2:26 am EST Mar 5, 2026
Forecast Valid:
5am EST Mar 5, 2026-6pm EDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation