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Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

5°F

-15°C

Humidity 78%
Wind Speed W 8 mph
Barometer 29.99 in
Dewpoint 0°F (-18°C)
Visibility 4.00 mi
Wind Chill-8°F (-22°C)
Last update 29 Jan 1:55 am EST
Extended Forecast for

4 Miles NW Sinnamahoning PA

Cold Weather Advisory January 29, 07:00pm until January 30, 10:00am
Cold Weather Advisory January 29, 01:59am until January 29, 10:00am
Click here for hazard details and duration
Cold Weather Advisory
Cold Weather Advisory
  •  
    Cold Weather Advisory January 29, 01:59am until January 29, 10:00am

    NOW until 10:00am Thu

    Cold Weather Advisory

  • Overnight

    Low: 1 °F

    Flurries

  • Thursday

    Thursday: Flurries with a slight chance of snow showers before 3pm, then flurries after 3pm. Mostly cloudy, with a high near 14. Wind chill values as low as -10. West wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 14 °F

    Slight Chance
    Snow Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -6. Wind chill values as low as -15. West wind 6 to 8 mph.

    Low: -6 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 12. Wind chill values as low as -20. Northwest wind 6 to 8 mph.

    High: 12 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -7. Northwest wind around 6 mph.

    Low: -7 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 15.

    High: 15 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 0 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 20.

    High: 20 °F

    Mostly Sunny

Detailed Forecast

Overnight
Flurries. Cloudy, with a low around 1. Wind chill values as low as -10. West wind 8 to 10 mph, with gusts as high as 20 mph.
Thursday
Flurries with a slight chance of snow showers before 3pm, then flurries after 3pm. Mostly cloudy, with a high near 14. Wind chill values as low as -10. West wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around -6. Wind chill values as low as -15. West wind 6 to 8 mph.
Friday
Mostly sunny, with a high near 12. Wind chill values as low as -20. Northwest wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around -7. Northwest wind around 6 mph.
Saturday
Mostly sunny, with a high near 15.
Saturday Night
Mostly cloudy, with a low around 0.
Sunday
Mostly sunny, with a high near 20.
Sunday Night
Partly cloudy, with a low around 5.
Monday
Mostly sunny, with a high near 26.
Monday Night
Mostly cloudy, with a low around 10.
Tuesday
Partly sunny, with a high near 27.
Tuesday Night
Mostly cloudy, with a low around 10.
Wednesday
Partly sunny, with a high near 26.
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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:
1:55 am EST Jan 29, 2026
Forecast Valid:
1am EST Jan 29, 2026-6pm EST Feb 4, 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