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Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

12°F

-11°C

Humidity 73%
Wind Speed W 15 G 20 mph
Barometer 30.02 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill-4°F (-20°C)
Last update 27 Jan 12:15 am EST
Extended Forecast for

6 Miles ESE Sinnamahoning PA

Cold Weather Advisory until January 27, 01:00pm
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory until January 27, 01:00pm

    NOW until 1:00pm Tue

    Cold Weather Advisory

  • Overnight

    Low: 1 °F

    Chance Snow
    Showers

  • Tuesday

    Tuesday: A slight chance of snow showers. Partly sunny, with a high near 13. Wind chill values as low as -15. Southwest wind 10 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 13 °F

    Slight Chance
    Snow Showers

  • Tuesday Night

    Tuesday Night: A chance of snow showers before 8pm. Mostly cloudy, with a low around 1. Wind chill values as low as -10. West wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    Low: 1 °F

    Chance Snow
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 13. Wind chill values as low as -15. West wind around 9 mph.

    High: 13 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 1. West wind around 9 mph.

    Low: 1 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 13.

    High: 13 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -8.

    Low: -8 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 12.

    High: 12 °F

    Mostly Sunny

Detailed Forecast

Overnight
A chance of snow showers. Mostly cloudy, with a low around 1. Wind chill values as low as -15. West wind 11 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Tuesday
A slight chance of snow showers. Partly sunny, with a high near 13. Wind chill values as low as -15. Southwest wind 10 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tuesday Night
A chance of snow showers before 8pm. Mostly cloudy, with a low around 1. Wind chill values as low as -10. West wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 13. Wind chill values as low as -15. West wind around 9 mph.
Wednesday Night
Mostly cloudy, with a low around 1. West wind around 9 mph.
Thursday
Partly sunny, with a high near 13.
Thursday Night
Partly cloudy, with a low around -8.
Friday
Mostly sunny, with a high near 12.
Friday Night
Mostly cloudy, with a low around -5.
Saturday
Partly sunny, with a high near 17.
Saturday Night
Mostly cloudy, with a low around 1.
Sunday
Mostly sunny, with a high near 22.
Sunday Night
Partly cloudy, with a low around 3.
Monday
Mostly sunny, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ESE Sinnamahoning PA
 41.35°N 77.94°W (Elev. 1998 ft)
Last Update:
7:06 pm EST Jan 26, 2026
Forecast Valid:
12am EST Jan 27, 2026-6pm EST Feb 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation