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

36°F

2°C

Humidity 87%
Wind Speed W 14 G 17 mph
Barometer 29.71 in
Dewpoint 32°F (0°C)
Visibility 4.00 mi
Wind Chill27°F (-3°C)
Last update 12 Nov 12:55 pm EST
Extended Forecast for

4 Miles NW Sinnamahoning PA

  • This Afternoon

    This Afternoon: A chance of showers. Cloudy, with a high near 41. West wind around 13 mph, with gusts as high as 29 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 41 °F

    Chance
    Showers

  • Tonight

    Tonight: Rain and snow showers likely before 1am, then a slight chance of snow showers after 5am. Mostly cloudy, with a low around 32. West wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 32 °F

    Rain/Snow
    Likely then
    Slight Chance
    Rain/Snow

  • Thursday

    Thursday: A slight chance of snow showers between 11am and noon. Mostly cloudy, with a high near 42. West wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    High: 42 °F

    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 31. West wind 7 to 9 mph, with gusts as high as 22 mph.

    Low: 31 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 45. West wind 6 to 9 mph, with gusts as high as 21 mph.

    High: 45 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of rain after 1pm. Partly sunny, with a high near 51. Chance of precipitation is 40%.

    High: 51 °F

    Partly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Rain. Low around 40. Chance of precipitation is 90%.

    Low: 40 °F

    Rain

  • Sunday

    Sunday: Rain showers likely before 1pm, then a chance of snow showers. Mostly cloudy, with a high near 49. Chance of precipitation is 60%.

    High: 49 °F

    Showers
    Likely then
    Rain/Snow
    Likely

Detailed Forecast

This Afternoon
A chance of showers. Cloudy, with a high near 41. West wind around 13 mph, with gusts as high as 29 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain and snow showers likely before 1am, then a slight chance of snow showers after 5am. Mostly cloudy, with a low around 32. West wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday
A slight chance of snow showers between 11am and noon. Mostly cloudy, with a high near 42. West wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 31. West wind 7 to 9 mph, with gusts as high as 22 mph.
Friday
Partly sunny, with a high near 45. West wind 6 to 9 mph, with gusts as high as 21 mph.
Friday Night
Partly cloudy, with a low around 28.
Saturday
A chance of rain after 1pm. Partly sunny, with a high near 51. Chance of precipitation is 40%.
Saturday Night
Rain. Low around 40. Chance of precipitation is 90%.
Sunday
Rain showers likely before 1pm, then a chance of snow showers. Mostly cloudy, with a high near 49. Chance of precipitation is 60%.
Sunday Night
A chance of snow showers. Mostly cloudy, with a low around 31. Chance of precipitation is 50%.
Monday
Partly sunny, with a high near 40.
Monday Night
A chance of snow. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 42. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Sinnamahoning PA
 41.44°N 78.1°W (Elev. 1818 ft)
Last Update:
1:05 pm EST Nov 12, 2025
Forecast Valid:
1pm EST Nov 12, 2025-6pm EST Nov 18, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation