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.

Mostly Cloudy

64°F

18°C

Humidity 43%
Wind Speed SE 6 mph
Barometer 29.95 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 18 Oct 8:15 pm EDT
Extended Forecast for

5 Miles N Sinnamahoning PA

  • Tonight

    Tonight: Partly cloudy, with a low around 51. Light southeast wind.

    Low: 51 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers after 5pm. Increasing clouds, with a high near 75. South wind 6 to 13 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 75 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers, mainly after 7pm. Low around 48. South wind 6 to 11 mph becoming southwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Showers

  • Monday

    Monday: Showers likely, mainly before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 60. West wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 60 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39. West wind around 6 mph becoming calm in the evening.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers after 2pm. Mostly sunny, with a high near 66. Chance of precipitation is 40%.

    High: 66 °F

    Sunny then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.

    Low: 42 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers. Mostly cloudy, with a high near 55. Chance of precipitation is 50%.

    High: 55 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 39. Chance of precipitation is 50%.

    Low: 39 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 51. Light southeast wind.
Sunday
A chance of showers after 5pm. Increasing clouds, with a high near 75. South wind 6 to 13 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers, mainly after 7pm. Low around 48. South wind 6 to 11 mph becoming southwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Showers likely, mainly before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 60. West wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Partly cloudy, with a low around 39. West wind around 6 mph becoming calm in the evening.
Tuesday
A chance of showers after 2pm. Mostly sunny, with a high near 66. Chance of precipitation is 40%.
Tuesday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 55. Chance of precipitation is 50%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 39. Chance of precipitation is 50%.
Thursday
Showers likely. Mostly cloudy, with a high near 53. Chance of precipitation is 60%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 36. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 57.
Friday Night
A chance of showers. Mostly cloudy, with a low around 39. Chance of precipitation is 40%.
Saturday
A chance of showers. Partly sunny, with a high near 58. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles N Sinnamahoning PA
 41.45°N 78.04°W (Elev. 1073 ft)
Last Update:
8:06 pm EDT Oct 18, 2025
Forecast Valid:
8pm EDT Oct 18, 2025-6pm EDT Oct 25, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation