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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

3 Miles SSW De Young 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: Mostly cloudy, with a low around 7. Wind chill values as low as zero. West wind 8 to 10 mph, with gusts as high as 24 mph.

    Low: 7 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a temperature falling to around 2 by 5pm. Wind chill values as low as -15. West wind 10 to 13 mph, with gusts as high as 29 mph.

    High: 14 °F⇓

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -5. Wind chill values as low as -15. Northwest wind 3 to 8 mph. Winds could gust as high as 20 mph.

    Low: -5 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny and cold, with a high near 9. Wind chill values as low as -5. Calm wind.

    High: 9 °F

    Cold

  • Saturday Night

    Saturday Night: Snow, mainly after 1am. Low around 5. Calm wind becoming east 5 to 7 mph after midnight. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 5 °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. Low around 8. Chance of precipitation is 90%.

    Low: 8 °F

    Snow

  • Monday

    Monday: A chance of snow. Mostly cloudy, with a high near 15. Chance of precipitation is 50%.

    High: 15 °F

    Chance Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around -5.

    Low: -5 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 7. Wind chill values as low as zero. West wind 8 to 10 mph, with gusts as high as 24 mph.
Friday
Mostly cloudy, with a temperature falling to around 2 by 5pm. Wind chill values as low as -15. West wind 10 to 13 mph, with gusts as high as 29 mph.
Friday Night
Mostly cloudy, with a low around -5. Wind chill values as low as -15. Northwest wind 3 to 8 mph. Winds could gust as high as 20 mph.
Saturday
Partly sunny and cold, with a high near 9. Wind chill values as low as -5. Calm wind.
Saturday Night
Snow, mainly after 1am. Low around 5. Calm wind becoming east 5 to 7 mph after midnight. 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. Low around 8. Chance of precipitation is 90%.
Monday
A chance of snow. Mostly cloudy, with a high near 15. Chance of precipitation is 50%.
Monday Night
Mostly cloudy, with a low around -5.
Tuesday
Partly sunny, with a high near 12.
Tuesday Night
Mostly cloudy, with a low around 3.
Wednesday
A chance of snow. Mostly cloudy, with a high near 16. Chance of precipitation is 30%.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 3. Chance of precipitation is 30%.
Thursday
A chance of snow. Mostly cloudy, with a high near 12. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW De Young PA
 41.53°N 78.94°W (Elev. 1808 ft)
Last Update:
4:41 pm EST Jan 22, 2026
Forecast Valid:
4pm EST Jan 22, 2026-6pm EST Jan 29, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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