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Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

10°F

-12°C

Humidity 52%
Wind Speed W 8 mph
Barometer 30.13 in
Dewpoint -4°F (-20°C)
Visibility 10.00 mi
Wind Chill-2°F (-19°C)
Last update 29 Jan 7:15 pm EST
Extended Forecast for

3 Miles NW Sinnamahoning PA

Cold Weather Advisory until January 30, 10:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory until January 30, 10:00am

    NOW until 10:00am Fri

    Cold Weather Advisory

  • Tonight

    Low: -6 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 11. Wind chill values as low as -20. Northwest wind 6 to 8 mph.

    High: 11 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -7. Wind chill values as low as -20. Northwest wind around 7 mph.

    Low: -7 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 14. Wind chill values as low as -20. North wind around 7 mph.

    High: 14 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -1. North wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: -1 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 18.

    High: 18 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 3.

    Low: 3 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around -6. Wind chill values as low as -15. West wind 6 to 9 mph.
Friday
Mostly sunny, with a high near 11. Wind chill values as low as -20. Northwest wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around -7. Wind chill values as low as -20. Northwest wind around 7 mph.
Saturday
Mostly sunny, with a high near 14. Wind chill values as low as -20. North wind around 7 mph.
Saturday Night
Mostly cloudy, with a low around -1. North wind 8 to 10 mph, with gusts as high as 21 mph.
Sunday
Mostly sunny, with a high near 18.
Sunday Night
Partly cloudy, with a low around 3.
Monday
Mostly sunny, with a high near 24.
Monday Night
Mostly cloudy, with a low around 11.
Tuesday
Partly sunny, with a high near 25.
Tuesday Night
Mostly cloudy, with a low around 8.
Wednesday
Partly sunny, with a high near 24.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 8. Chance of precipitation is 30%.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 25. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Sinnamahoning PA
 41.41°N 78.11°W (Elev. 2169 ft)
Last Update:
7:06 pm EST Jan 29, 2026
Forecast Valid:
7pm EST Jan 29, 2026-6pm EST Feb 5, 2026
 
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