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Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

6 Miles ESE Sinnamahoning PA

Winter Storm Watch January 24, 10:00pm until January 26, 01:00pm
Cold Weather Advisory January 23, 01:00pm until January 24, 10:00am
Click here for hazard details and duration
Winter Storm Watch
Cold Weather Advisory

  • Tonight

    Tonight: Partly cloudy, with a low around 15. West wind around 14 mph, with gusts as high as 24 mph.

    Low: 15 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a temperature rising to near 18 by 11am, then falling to around 7 during the remainder of the day. Wind chill values as low as -10. West wind around 15 mph, with gusts as high as 30 mph.

    High: 18 °F⇓

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 0. Wind chill values as low as -15. Northwest wind 8 to 14 mph, with gusts as high as 25 mph.

    Low: 0 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 12. Wind chill values as low as -15. Northwest wind around 6 mph becoming light and variable in the afternoon.

    High: 12 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Snow, mainly after 1am. Low around 7. East wind 6 to 9 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 7 °F

    Chance Snow
    then Snow

  • Sunday

    Sunday: Snow. The snow could be heavy at times. High near 15. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    High: 15 °F

    Heavy Snow

  • Sunday Night

    Sunday Night: Snow. The snow could be heavy at times. Low around 11. Chance of precipitation is 90%.

    Low: 11 °F

    Heavy Snow

  • Monday

    Monday: A chance of snow. Mostly cloudy, with a high near 17. Chance of precipitation is 40%.

    High: 17 °F

    Chance Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around -2.

    Low: -2 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 15. West wind around 14 mph, with gusts as high as 24 mph.
Friday
Mostly sunny, with a temperature rising to near 18 by 11am, then falling to around 7 during the remainder of the day. Wind chill values as low as -10. West wind around 15 mph, with gusts as high as 30 mph.
Friday Night
Partly cloudy, with a low around 0. Wind chill values as low as -15. Northwest wind 8 to 14 mph, with gusts as high as 25 mph.
Saturday
Partly sunny, with a high near 12. Wind chill values as low as -15. Northwest wind around 6 mph becoming light and variable in the afternoon.
Saturday Night
Snow, mainly after 1am. Low around 7. East wind 6 to 9 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Sunday
Snow. The snow could be heavy at times. High near 15. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Sunday Night
Snow. The snow could be heavy at times. Low around 11. Chance of precipitation is 90%.
Monday
A chance of snow. Mostly cloudy, with a high near 17. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around -2.
Tuesday
Partly sunny, with a high near 15.
Tuesday Night
Mostly cloudy, with a low around 5.
Wednesday
Mostly cloudy, with a high near 19.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 4. Chance of precipitation is 30%.
Thursday
A chance of snow. Mostly cloudy, with a high near 16. Chance of precipitation is 30%.
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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 22, 2026
Forecast Valid:
8pm EST Jan 22, 2026-6pm EST Jan 29, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation