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Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

32°F

0°C

Humidity 55%
Wind Speed W 17 G 35 mph
Barometer 29.98 in
Dewpoint 18°F (-8°C)
Visibility 4.00 mi
Wind Chill21°F (-6°C)
Last update 22 Jan 10:15 am EST
Extended Forecast for

3 Miles S Kersey PA

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

  • Today

    Today: Partly sunny, with a high near 28. Breezy, with a west wind 16 to 20 mph, with gusts as high as 39 mph.

    High: 28 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Increasing clouds, with a low around 11. Wind chill values as low as zero. West wind 11 to 14 mph, with gusts as high as 26 mph.

    Low: 11 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy, with a temperature falling to around 4 by 5pm. Wind chill values as low as -15. West wind 15 to 17 mph, with gusts as high as 31 mph.

    High: 17 °F⇓

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -3. Wind chill values as low as -15. Northwest wind 7 to 13 mph, with gusts as high as 24 mph.

    Low: -3 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny and cold, with a high near 10. Northwest wind around 6 mph becoming light and variable in the afternoon.

    High: 10 °F

    Cold

  • Saturday Night

    Saturday Night: Snow, mainly after 1am. Low around 4. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    Low: 4 °F

    Chance Snow
    then Snow

  • Sunday

    Sunday: Snow. High near 15. Chance of precipitation is 90%.

    High: 15 °F

    Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly before 1am. Mostly cloudy, with a low around 9. Chance of precipitation is 70%.

    Low: 9 °F

    Snow Likely

  • Monday

    Monday: A chance of snow showers. Mostly cloudy, with a high near 15. Chance of precipitation is 40%.

    High: 15 °F

    Chance Snow
    Showers

Detailed Forecast

Today
Partly sunny, with a high near 28. Breezy, with a west wind 16 to 20 mph, with gusts as high as 39 mph.
Tonight
Increasing clouds, with a low around 11. Wind chill values as low as zero. West wind 11 to 14 mph, with gusts as high as 26 mph.
Friday
Mostly cloudy, with a temperature falling to around 4 by 5pm. Wind chill values as low as -15. West wind 15 to 17 mph, with gusts as high as 31 mph.
Friday Night
Mostly cloudy, with a low around -3. Wind chill values as low as -15. Northwest wind 7 to 13 mph, with gusts as high as 24 mph.
Saturday
Partly sunny and cold, with a high near 10. Northwest wind around 6 mph becoming light and variable in the afternoon.
Saturday Night
Snow, mainly after 1am. Low around 4. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Sunday
Snow. High near 15. Chance of precipitation is 90%.
Sunday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 9. Chance of precipitation is 70%.
Monday
A chance of snow showers. Mostly cloudy, with a high near 15. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around 1.
Tuesday
Partly sunny, with a high near 16.
Tuesday Night
Mostly cloudy, with a low around 5.
Wednesday
A chance of snow showers. Mostly cloudy, with a high near 20. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Kersey PA
 41.29°N 78.63°W (Elev. 1896 ft)
Last Update:
10:01 am EST Jan 22, 2026
Forecast Valid:
10am EST Jan 22, 2026-6pm EST Jan 28, 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