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 ENE Penfield PA

  • Tonight

    Tonight: A chance of rain or drizzle before 1am, then showers, mainly after 1am. Patchy fog. Low around 43. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Showers and
    Patchy Fog

  • Thursday

    Thursday: Rain. Patchy fog before 1pm. High near 56. Light east wind. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 56 °F

    Rain and
    Patchy Fog

  • Thursday Night

    Thursday Night: Rain and possibly a thunderstorm before 1am, then rain likely. Low around 48. Light and variable wind. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 48 °F

    Rain

  • Friday

    Friday: A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 63. Southwest wind 3 to 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers, mainly after 1am. Mostly cloudy, with a low around 51. South wind 3 to 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers likely, then showers and possibly a thunderstorm after 1pm. High near 70. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 70 °F

    Showers
    Likely then
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly before 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 57.

    High: 57 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of rain or drizzle before 1am, then showers, mainly after 1am. Patchy fog. Low around 43. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Rain. Patchy fog before 1pm. High near 56. Light east wind. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
Rain and possibly a thunderstorm before 1am, then rain likely. Low around 48. Light and variable wind. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 63. Southwest wind 3 to 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A chance of showers, mainly after 1am. Mostly cloudy, with a low around 51. South wind 3 to 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Showers likely, then showers and possibly a thunderstorm after 1pm. High near 70. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 42. Chance of precipitation is 70%.
Sunday
Mostly sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 40.
Monday
Sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
A chance of showers. Partly sunny, with a high near 71. Chance of precipitation is 40%.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Wednesday
Showers likely. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Penfield PA
 41.23°N 78.55°W (Elev. 1299 ft)
Last Update:
6:26 pm EST Mar 4, 2026
Forecast Valid:
6pm EST Mar 4, 2026-6pm EDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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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