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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 57%
Wind Speed W 12 mph
Barometer 30.09 in
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Wind Chill-2°F (-19°C)
Last update 29 Jan 4:35 pm EST
Extended Forecast for

4 Miles SE Sinnamahoning PA

Cold Weather Advisory January 29, 07:00pm until January 30, 10:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around -5. Wind chill values as low as -15. West wind 6 to 8 mph, with gusts as high as 20 mph.

    Low: -5 °F

    Decreasing
    Clouds

  • Friday

    Friday: Mostly sunny, with a high near 13. Wind chill values as low as -15. Northwest wind around 7 mph.

    High: 13 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -7. Wind chill values as low as -20. Northwest wind around 6 mph.

    Low: -7 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 15. Wind chill values as low as -20. North wind around 6 mph.

    High: 15 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -1. North wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: -1 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 19.

    High: 19 °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 25.

    High: 25 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 11.

    Low: 11 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around -5. Wind chill values as low as -15. West wind 6 to 8 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 13. Wind chill values as low as -15. Northwest wind around 7 mph.
Friday Night
Partly cloudy, with a low around -7. Wind chill values as low as -20. Northwest wind around 6 mph.
Saturday
Mostly sunny, with a high near 15. Wind chill values as low as -20. North wind around 6 mph.
Saturday Night
Mostly cloudy, with a low around -1. North wind 7 to 9 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 19.
Sunday Night
Partly cloudy, with a low around 3.
Monday
Mostly sunny, with a high near 25.
Monday Night
Mostly cloudy, with a low around 11.
Tuesday
Partly sunny, with a high near 26.
Tuesday Night
Mostly cloudy, with a low around 9.
Wednesday
Partly sunny, with a high near 25.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 9. Chance of precipitation is 40%.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 26. Chance of precipitation is 30%.
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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:
1:05 pm EST Jan 29, 2026
Forecast Valid:
4pm EST Jan 29, 2026-6pm EST Feb 5, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation