National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

32°F

0°C

Humidity 75%
Wind Speed W 17 G 32 mph
Barometer 29.86 in
Dewpoint 25°F (-4°C)
Visibility 2.50 mi
Wind Chill21°F (-6°C)
Last update 11 Jan 11:35 am EST
Extended Forecast for

5 Miles N Sinnamahoning PA

  • Today

    Today: Snow showers likely, mainly before 5pm. The snow could be heavy at times. Mostly cloudy, with a high near 37. West wind 9 to 16 mph, with gusts as high as 36 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than one inch possible.

    High: 37 °F

    Heavy Snow

  • Tonight

    Tonight: Isolated snow showers before midnight. Mostly cloudy, with a low around 25. West wind 13 to 17 mph, with gusts as high as 39 mph. Chance of precipitation is 20%.

    Low: 25 °F

    Isolated Snow
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 38. West wind 7 to 10 mph, with gusts as high as 23 mph.

    High: 38 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 29. West wind around 6 mph, with gusts as high as 20 mph.

    Low: 29 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 44. Southwest wind 5 to 7 mph.

    High: 44 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 36. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 43. Chance of precipitation is 70%.

    High: 43 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Rain showers likely before 1am, then a chance of snow showers. Mostly cloudy, with a low around 22. Chance of precipitation is 60%.

    Low: 22 °F

    Showers
    Likely then
    Rain/Snow
    Likely

  • Thursday

    Thursday: A chance of snow showers. Partly sunny, with a high near 29. Chance of precipitation is 30%.

    High: 29 °F

    Chance Snow
    Showers

Detailed Forecast

Today
Snow showers likely, mainly before 5pm. The snow could be heavy at times. Mostly cloudy, with a high near 37. West wind 9 to 16 mph, with gusts as high as 36 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than one inch possible.
Tonight
Isolated snow showers before midnight. Mostly cloudy, with a low around 25. West wind 13 to 17 mph, with gusts as high as 39 mph. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 38. West wind 7 to 10 mph, with gusts as high as 23 mph.
Monday Night
Partly cloudy, with a low around 29. West wind around 6 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, with a high near 44. Southwest wind 5 to 7 mph.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 36. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 43. Chance of precipitation is 70%.
Wednesday Night
Rain showers likely before 1am, then a chance of snow showers. Mostly cloudy, with a low around 22. Chance of precipitation is 60%.
Thursday
A chance of snow showers. Partly sunny, with a high near 29. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 15.
Friday
Partly sunny, with a high near 31.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.
Saturday
A chance of snow showers. Partly sunny, with a high near 34. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles N Sinnamahoning PA
 41.45°N 78.04°W (Elev. 1073 ft)
Last Update:
8:11 am EST Jan 11, 2026
Forecast Valid:
11am EST Jan 11, 2026-6pm EST Jan 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation