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

32°F

0°C

Humidity 93%
Wind Speed W 7 G 16 mph
Barometer 29.69 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 16 Nov 10:35 pm EST
Extended Forecast for

4 Miles SE Sinnamahoning PA

  • Tonight

    Tonight: Snow showers, mainly before 4am. Low around 28. West wind around 15 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than one inch possible.

    Low: 28 °F

    Snow Showers

  • Monday

    Monday: A chance of snow showers. Mostly cloudy, with a high near 39. Northwest wind 10 to 13 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    High: 39 °F

    Chance Snow
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 28. West wind 7 to 10 mph, with gusts as high as 24 mph.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of snow showers after 1pm. Mostly cloudy, with a high near 42. West wind 3 to 6 mph. Chance of precipitation is 20%.

    High: 42 °F

    Partly Sunny
    then Slight
    Chance Snow
    Showers

  • Tuesday Night

    Tuesday Night: A chance of snow showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Mostly cloudy, with a low around 29. Light and variable wind. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 29 °F

    Chance Snow
    Showers then
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Thursday

    Thursday: Cloudy, with a high near 48.

    High: 48 °F

    Cloudy

  • Thursday Night

    Thursday Night: Showers likely, mainly after 1am. Cloudy, with a low around 41. Chance of precipitation is 70%.

    Low: 41 °F

    Showers
    Likely

Detailed Forecast

Tonight
Snow showers, mainly before 4am. Low around 28. West wind around 15 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than one inch possible.
Monday
A chance of snow showers. Mostly cloudy, with a high near 39. Northwest wind 10 to 13 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around 28. West wind 7 to 10 mph, with gusts as high as 24 mph.
Tuesday
A slight chance of snow showers after 1pm. Mostly cloudy, with a high near 42. West wind 3 to 6 mph. Chance of precipitation is 20%.
Tuesday Night
A chance of snow showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Mostly cloudy, with a low around 29. Light and variable wind. Chance of precipitation is 50%. Little or no snow accumulation expected.
Wednesday
Partly sunny, with a high near 46.
Wednesday Night
Mostly cloudy, with a low around 35.
Thursday
Cloudy, with a high near 48.
Thursday Night
Showers likely, mainly after 1am. Cloudy, with a low around 41. Chance of precipitation is 70%.
Friday
Showers. High near 55. Chance of precipitation is 80%.
Friday Night
Showers likely. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.
Saturday
A chance of showers. Mostly cloudy, with a high near 51. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 36. Chance of precipitation is 30%.
Sunday
Mostly cloudy, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Sinnamahoning PA
 41.34°N 78°W (Elev. 1906 ft)
Last Update:
7:41 pm EST Nov 16, 2025
Forecast Valid:
10pm EST Nov 16, 2025-6pm EST Nov 23, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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