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Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

12°F

-11°C

Humidity 73%
Wind Speed W 9 mph
Barometer 30.01 in
Dewpoint 5°F (-15°C)
Visibility 3.00 mi
Wind Chill0°F (-18°C)
Last update 27 Jan 12:55 am EST
Extended Forecast for

4 Miles SE Sinnamahoning PA

Cold Weather Advisory until January 27, 01:00pm
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory until January 27, 01:00pm

    NOW until 1:00pm Tue

    Cold Weather Advisory

  • Overnight

    Low: 0 °F

    Chance Snow
    Showers

  • Tuesday

    Tuesday: A slight chance of snow showers. Partly sunny, with a high near 13. Wind chill values as low as -15. Southwest wind around 10 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    High: 13 °F

    Slight Chance
    Snow Showers

  • Tuesday Night

    Tuesday Night: A chance of snow showers before 8pm. Mostly cloudy, with a low around 1. Wind chill values as low as -10. West wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.

    Low: 1 °F

    Chance Snow
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 13. Wind chill values as low as -10. West wind around 8 mph, with gusts as high as 20 mph.

    High: 13 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 1. West wind around 8 mph.

    Low: 1 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 13.

    High: 13 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -8.

    Low: -8 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 12.

    High: 12 °F

    Partly Sunny

Detailed Forecast

Overnight
A chance of snow showers. Mostly cloudy, with a low around 0. Wind chill values as low as -15. West wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Tuesday
A slight chance of snow showers. Partly sunny, with a high near 13. Wind chill values as low as -15. Southwest wind around 10 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Tuesday Night
A chance of snow showers before 8pm. Mostly cloudy, with a low around 1. Wind chill values as low as -10. West wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 13. Wind chill values as low as -10. West wind around 8 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 1. West wind around 8 mph.
Thursday
Partly sunny, with a high near 13.
Thursday Night
Partly cloudy, with a low around -8.
Friday
Partly sunny, with a high near 12.
Friday Night
Mostly cloudy, with a low around -5.
Saturday
Partly sunny, with a high near 17.
Saturday Night
Mostly cloudy, with a low around 1.
Sunday
Partly sunny, with a high near 22.
Sunday Night
Partly cloudy, with a low around 3.
Monday
Mostly sunny, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Sinnamahoning PA
 41.34°N 78°W (Elev. 1906 ft)
Last Update:
7:06 pm EST Jan 26, 2026
Forecast Valid:
1am EST Jan 27, 2026-6pm EST Feb 2, 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