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Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Fair

-6°F

-21°C

Humidity 77%
Wind Speed W 5 mph
Barometer 30.48 in
Dewpoint -11°F (-24°C)
Visibility 10.00 mi
Wind Chill-18°F (-28°C)
Last update 24 Jan 2:35 am EST
Extended Forecast for

3 Miles S Kersey PA

Cold Weather Advisory January 24, 02:49am until January 24, 10:00am
Winter Storm Warning January 24, 10:00pm until January 26, 01:00pm
Click here for hazard details and duration
Cold Weather Advisory
Winter Storm Warning
  •  
    Cold Weather Advisory January 24, 02:49am until January 24, 10:00am

    NOW until 10:00am Sat

    Cold Weather Advisory

  • Overnight

    Low: -5 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny and cold, with a high near 10. Wind chill values as low as -15. Northwest wind around 5 mph becoming calm in the morning.

    High: 10 °F

    Cold

  • Saturday Night

    Saturday Night: Snow, mainly after 4am. Low around 6. Wind chill values as low as -10. Light east wind becoming southeast 5 to 10 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 6 °F

    Slight Chance
    Snow then
    Snow

  • Sunday

    Sunday: Snow. The snow could be heavy at times. High near 15. Wind chill values as low as -10. Southeast wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.

    High: 15 °F

    Heavy Snow

  • Sunday Night

    Sunday Night: Snow. The snow could be heavy at times. Low around 11. East wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    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

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 11.

    High: 11 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around -5. Wind chill values as low as -20. Northwest wind around 7 mph.
Saturday
Partly sunny and cold, with a high near 10. Wind chill values as low as -15. Northwest wind around 5 mph becoming calm in the morning.
Saturday Night
Snow, mainly after 4am. Low around 6. Wind chill values as low as -10. Light east wind becoming southeast 5 to 10 mph in the evening. Winds could gust as high as 20 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. Wind chill values as low as -10. Southeast wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.
Sunday Night
Snow. The snow could be heavy at times. Low around 11. East wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
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
Mostly cloudy, with a high near 11.
Tuesday Night
Mostly cloudy, with a low around 5.
Wednesday
A chance of snow showers after 1pm. Mostly cloudy, with a high near 12. Chance of precipitation is 30%.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 0. Chance of precipitation is 30%.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 13. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 1.
Friday
Mostly cloudy, with a high near 14.
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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:
1:05 am EST Jan 24, 2026
Forecast Valid:
2am EST Jan 24, 2026-6pm EST Jan 30, 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