National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

34°F

1°C

Humidity 81%
Wind Speed SW 8 mph
Barometer 29.91 in
Dewpoint 28°F (-2°C)
Visibility 7.00 mi
Wind Chill27°F (-3°C)
Last update 17 Jan 2:55 pm EST
Extended Forecast for

11 Miles WSW Galeton PA

Winter Weather Advisory January 17, 03:18pm until January 17, 07:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory January 17, 03:18pm until January 17, 07:00pm

    NOW until 7:00pm Sat

    Winter Weather Advisory

  • This Afternoon

    High: 33 °F

    Slight Chance
    Snow Showers

  • Tonight

    Tonight: A slight chance of snow showers before 8pm. Mostly cloudy, with a low around 16. Southwest wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 16 °F

    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 21. West wind 6 to 9 mph, with gusts as high as 20 mph.

    High: 21 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 12. West wind 6 to 9 mph, with gusts as high as 20 mph.

    Low: 12 °F

    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: A chance of snow showers, mainly before 1pm. Mostly cloudy, with a high near 21. West wind 10 to 15 mph, with gusts as high as 34 mph. Chance of precipitation is 30%.

    High: 21 °F

    Chance Snow
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 2.

    Low: 2 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny and cold, with a high near 9.

    High: 9 °F

    Cold

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 3.

    Low: 3 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A slight chance of snow showers. Mostly cloudy, with a high near 33. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Tonight
A slight chance of snow showers before 8pm. Mostly cloudy, with a low around 16. Southwest wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 21. West wind 6 to 9 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 12. West wind 6 to 9 mph, with gusts as high as 20 mph.
M.L.King Day
A chance of snow showers, mainly before 1pm. Mostly cloudy, with a high near 21. West wind 10 to 15 mph, with gusts as high as 34 mph. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 2.
Tuesday
Partly sunny and cold, with a high near 9.
Tuesday Night
Partly cloudy, with a low around 3.
Wednesday
A chance of snow showers after 1pm. Partly sunny, with a high near 27. Chance of precipitation is 30%.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.
Thursday
A chance of snow showers. Partly sunny, with a high near 22. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 7.
Friday
Partly sunny, with a high near 22.
Friday Night
Mostly cloudy, with a low around 12.
Saturday
A chance of snow showers. Partly sunny, with a high near 21.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles WSW Galeton PA
 41.67°N 77.83°W (Elev. 1998 ft)
Last Update:
2:31 pm EST Jan 17, 2026
Forecast Valid:
3pm EST Jan 17, 2026-6pm EST Jan 24, 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