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

55°F

13°C

Humidity 94%
Wind Speed Calm
Barometer 30.33 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 5 Aug 5:35 am EDT
Extended Forecast for

Saint Marys PASimilar City Names

  • Today

    Today: Widespread haze. Mostly sunny, with a high near 84. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 84 °F

    Haze

  • Tonight

    Tonight: Widespread haze before 11pm. Partly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Haze then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80. Calm wind becoming southeast 5 to 7 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. Light southeast wind.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81. Southeast wind 3 to 8 mph.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

Detailed Forecast

Today
Widespread haze. Mostly sunny, with a high near 84. Calm wind becoming southeast around 5 mph in the afternoon.
Tonight
Widespread haze before 11pm. Partly cloudy, with a low around 58. Calm wind.
Wednesday
Mostly sunny, with a high near 80. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 56. Light southeast wind.
Thursday
Sunny, with a high near 81. Southeast wind 3 to 8 mph.
Thursday Night
Mostly clear, with a low around 58.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Mostly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 63.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys PASimilar City Names
 41.43°N 78.54°W (Elev. 1709 ft)
Last Update:
4:00 am EDT Aug 5, 2025
Forecast Valid:
5am EDT Aug 5, 2025-6pm EDT Aug 11, 2025
 
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Additional Resources

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Chance of Precipitation