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

72°F

22°C

Humidity 36%
Wind Speed Calm
Barometer 30.27 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 1 Sep 6:15 pm EDT
Extended Forecast for

6 Miles E Sinnamahoning PA

  • Tonight

    Tonight: Mostly clear, with a low around 51. Calm wind.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. Calm wind.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 51. Calm wind.

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81. Light south wind.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 77. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 77 °F

    Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 55. Chance of precipitation is 80%.

    Low: 55 °F

    Showers

  • Friday

    Friday: A chance of showers before 8am. Mostly sunny, with a high near 76. Chance of precipitation is 30%.

    High: 76 °F

    Chance
    Showers then
    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 51. Calm wind.
Tuesday
Sunny, with a high near 78. Calm wind.
Tuesday Night
Mostly clear, with a low around 51. Calm wind.
Wednesday
Sunny, with a high near 81. Light south wind.
Wednesday Night
Partly cloudy, with a low around 57. Calm wind.
Thursday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 77. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 55. Chance of precipitation is 80%.
Friday
A chance of showers before 8am. Mostly sunny, with a high near 76. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 54.
Saturday
A chance of showers after 2pm. Mostly sunny, with a high near 74. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Partly cloudy, with a low around 47. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 71.
Sunday Night
Mostly clear, with a low around 44.
Monday
Sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles E Sinnamahoning PA
 41.38°N 77.94°W (Elev. 1076 ft)
Last Update:
6:33 pm EDT Sep 1, 2025
Forecast Valid:
6pm EDT Sep 1, 2025-6pm EDT Sep 8, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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