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Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

3°F

-16°C

Humidity 55%
Wind Speed NW 13 G 18 mph
Barometer 30.41 in
Dewpoint -9°F (-23°C)
Visibility 10.00 mi
Wind Chill-14°F (-26°C)
Last update 23 Jan 7:15 pm EST
Extended Forecast for

6 Miles ESE Sinnamahoning PA

Cold Weather Advisory January 23, 07:30pm 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 23, 07:30pm until January 24, 10:00am

    NOW until 10:00am Sat

    Cold Weather Advisory

  • Tonight

    Low: -2 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 12. Wind chill values as low as -15. Northwest wind 3 to 7 mph.

    High: 12 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Snow after 1am. Low around 8. Wind chill values as low as -5. East wind 5 to 9 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 8 °F

    Mostly Cloudy
    then Snow

  • Sunday

    Sunday: Snow. The snow could be heavy at times. High near 16. Wind chill values as low as -5. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.

    High: 16 °F

    Heavy Snow

  • Sunday Night

    Sunday Night: Snow. Low around 13. East wind 7 to 9 mph becoming northeast after midnight. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    Low: 13 °F

    Snow

  • Monday

    Monday: A chance of snow. Mostly cloudy, with a high near 18. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.

    High: 18 °F

    Chance Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 1.

    Low: 1 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 13.

    High: 13 °F

    Partly Sunny

Detailed Forecast

Tonight
Mostly cloudy, with a low around -2. Wind chill values as low as -15. Northwest wind 9 to 15 mph, with gusts as high as 26 mph.
Saturday
Partly sunny, with a high near 12. Wind chill values as low as -15. Northwest wind 3 to 7 mph.
Saturday Night
Snow after 1am. Low around 8. Wind chill values as low as -5. East wind 5 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 16. Wind chill values as low as -5. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.
Sunday Night
Snow. Low around 13. East wind 7 to 9 mph becoming northeast after midnight. 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 18. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.
Monday Night
Mostly cloudy, with a low around 1.
Tuesday
Partly sunny, with a high near 13.
Tuesday Night
Mostly cloudy, with a low around 4.
Wednesday
Partly sunny, with a high near 16.
Wednesday Night
Mostly cloudy, with a low around 1.
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 -1.
Friday
Partly sunny, with a high near 16.
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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 23, 2026
Forecast Valid:
7pm EST Jan 23, 2026-6pm EST Jan 30, 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