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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 3 mph
Barometer 30.53 in
Dewpoint -11°F (-24°C)
Visibility 10.00 mi
Last update 24 Jan 6:35 am EST
Extended Forecast for

4 Miles NW Sinnamahoning PA

Cold Weather Advisory January 24, 06:55am until January 24, 10:00am
Winter Storm Warning January 24, 10:00pm until January 26, 01:00pm
Click here for hazard details and duration
...
Winter Storm Warning
  •  
    Cold Weather Advisory January 24, 06:55am until January 24, 10:00am

    NOW until 10:00am Sat

    Cold Weather Advisory

  • Today

    High: 12 °F

    Partly Sunny

  • Tonight

    Tonight: Snow likely, mainly after 5am. Mostly cloudy, with a low around 8. Wind chill values as low as -5. Southeast wind 3 to 8 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 8 °F

    Mostly Cloudy
    then Snow
    Likely

  • Sunday

    Sunday: Snow. The snow could be heavy at times. High near 16. Wind chill values as low as -5. Southeast wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    High: 16 °F

    Heavy Snow

  • Sunday Night

    Sunday Night: Snow. The snow could be heavy at times. Low around 12. East wind 6 to 8 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: 12 °F

    Heavy Snow

  • Monday

    Monday: A chance of snow, mainly before 1pm. Mostly cloudy, with a high near 19. Northwest wind 8 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 19 °F

    Chance Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 0.

    Low: 0 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 13.

    High: 13 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 5.

    Low: 5 °F

    Mostly Cloudy

Detailed Forecast

Today
Partly sunny, with a high near 12. Wind chill values as low as -15. Northwest wind around 6 mph becoming calm in the afternoon.
Tonight
Snow likely, mainly after 5am. Mostly cloudy, with a low around 8. Wind chill values as low as -5. Southeast wind 3 to 8 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Sunday
Snow. The snow could be heavy at times. High near 16. Wind chill values as low as -5. Southeast wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Sunday Night
Snow. The snow could be heavy at times. Low around 12. East wind 6 to 8 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, mainly before 1pm. Mostly cloudy, with a high near 19. Northwest wind 8 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 0.
Tuesday
Partly sunny, with a high near 13.
Tuesday Night
Mostly cloudy, with a low around 5.
Wednesday
Mostly cloudy, with a high near 15.
Wednesday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 1. Chance of precipitation is 30%.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 15. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 3.
Friday
Partly sunny, with a high near 16.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Sinnamahoning PA
 41.44°N 78.1°W (Elev. 1818 ft)
Last Update:
3:36 am EST Jan 24, 2026
Forecast Valid:
6am EST Jan 24, 2026-6pm EST Jan 30, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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