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

82°F

28°C

Humidity 40%
Wind Speed N 3 mph
Barometer 30.10 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 14 Aug 7:15 pm EDT
Extended Forecast for

2 Miles NE Penfield PA

  • Tonight

    Tonight: Partly cloudy, with a low around 62. Light northeast wind.

    Low: 62 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Light and variable wind. Chance of precipitation is 20%.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: A slight chance of showers, with thunderstorms also possible after 2pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 88. Light south wind. Chance of precipitation is 20%.

    High: 88 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 8pm. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.

    Low: 60 °F

    Showers
    Likely then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 62. Light northeast wind.
Friday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Light and variable wind. Chance of precipitation is 20%.
Friday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 64. Calm wind.
Saturday
A slight chance of showers, with thunderstorms also possible after 2pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 88. Light south wind. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 64. Calm wind.
Sunday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers likely and possibly a thunderstorm before 8pm. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 50%.
Wednesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Chance of precipitation is 50%.
Wednesday Night
A chance of thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NE Penfield PA
 41.24°N 78.58°W (Elev. 1598 ft)
Last Update:
4:24 pm EDT Aug 14, 2025
Forecast Valid:
7pm EDT Aug 14, 2025-6pm EDT Aug 21, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation