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

52°F

11°C

Humidity 72%
Wind Speed W 5 mph
Barometer 29.84 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 8 Nov 5:15 pm EST
Extended Forecast for

4 Miles ESE Sinnamahoning PA

  • Tonight

    Tonight: Showers likely, mainly between 11pm and 1am. Cloudy, with a low around 42. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers, mainly before 3pm. High near 57. Light and variable wind becoming southeast around 6 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 57 °F

    Showers

  • Sunday Night

    Sunday Night: Rain showers likely before 10pm, then rain and snow showers likely between 10pm and 1am, then a chance of snow showers after 1am. Cloudy, with a low around 30. West wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Rain/Snow
    Likely

  • Monday

    Monday: A chance of snow showers. Mostly cloudy, with a high near 39. Northwest wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 39 °F

    Chance Snow
    Showers

  • Monday Night

    Monday Night: Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 24. West wind 7 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Snow Showers
    Likely

  • Veterans Day

    Veterans Day: A chance of snow showers, mainly before 1pm. Mostly cloudy, with a high near 38. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 38 °F

    Chance Snow
    Showers

  • Tuesday Night

    Tuesday Night: A chance of snow showers. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.

    Low: 28 °F

    Chance Snow
    Showers

  • Wednesday

    Wednesday: A chance of rain and snow showers before 1pm, then a chance of rain showers. Mostly cloudy, with a high near 44. Chance of precipitation is 50%.

    High: 44 °F

    Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain showers likely before 1am, then a chance of rain and snow showers. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.

    Low: 33 °F

    Showers
    Likely then
    Rain/Snow
    Likely

Detailed Forecast

Tonight
Showers likely, mainly between 11pm and 1am. Cloudy, with a low around 42. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers, mainly before 3pm. High near 57. Light and variable wind becoming southeast around 6 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain showers likely before 10pm, then rain and snow showers likely between 10pm and 1am, then a chance of snow showers after 1am. Cloudy, with a low around 30. West wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday
A chance of snow showers. Mostly cloudy, with a high near 39. Northwest wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Monday Night
Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 24. West wind 7 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Veterans Day
A chance of snow showers, mainly before 1pm. Mostly cloudy, with a high near 38. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Tuesday Night
A chance of snow showers. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.
Wednesday
A chance of rain and snow showers before 1pm, then a chance of rain showers. Mostly cloudy, with a high near 44. Chance of precipitation is 50%.
Wednesday Night
Rain showers likely before 1am, then a chance of rain and snow showers. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Thursday
A chance of rain and snow showers before 1pm. Mostly cloudy, with a high near 44. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 31.
Friday
Partly sunny, with a high near 46.
Friday Night
Mostly cloudy, with a low around 30.
Saturday
Partly sunny, with a high near 49.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Sinnamahoning PA
 41.36°N 78°W (Elev. 1598 ft)
Last Update:
2:41 pm EST Nov 8, 2025
Forecast Valid:
5pm EST Nov 8, 2025-6pm EST Nov 15, 2025
 
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