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

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Fair

10°F

-12°C

Humidity 61%
Wind Speed Calm
Barometer 30.21 in
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Last update 8 Dec 11:55 pm EST
Extended Forecast for

3 Miles WSW Ridgway PA

  • Overnight

    Overnight: Mostly clear, with a low around 4. Calm wind.

    Low: 4 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of snow showers, mainly between 1pm and 5pm. Increasing clouds, with a high near 31. Wind chill values as low as zero. Light south wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 40%.

    High: 31 °F

    Partly Sunny
    then Chance
    Snow Showers

  • Tuesday Night

    Tuesday Night: A slight chance of snow showers between 7pm and 1am, then snow after 1am. Low around 26. Southwest wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    Low: 26 °F

    Slight Chance
    Snow Showers
    then Snow

  • Wednesday

    Wednesday: Snow, possibly mixed with rain. High near 36. South wind around 11 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

    High: 36 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: Snow, possibly mixed with rain, becoming all snow after 7pm. Low around 21. West wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 21 °F

    Rain/Snow
    then Snow

  • Thursday

    Thursday: Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 27. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 27 °F

    Snow Showers
    Likely

  • Thursday Night

    Thursday Night: Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 60%.

    Low: 16 °F

    Snow Showers
    Likely

  • Friday

    Friday: Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 27. Chance of precipitation is 60%.

    High: 27 °F

    Snow Showers
    Likely

  • Friday Night

    Friday Night: Snow showers. Low around 13. Chance of precipitation is 80%.

    Low: 13 °F

    Snow Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 4. Calm wind.
Tuesday
A chance of snow showers, mainly between 1pm and 5pm. Increasing clouds, with a high near 31. Wind chill values as low as zero. Light south wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 40%.
Tuesday Night
A slight chance of snow showers between 7pm and 1am, then snow after 1am. Low around 26. Southwest wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Wednesday
Snow, possibly mixed with rain. High near 36. South wind around 11 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Wednesday Night
Snow, possibly mixed with rain, becoming all snow after 7pm. Low around 21. West wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Thursday
Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 27. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 60%.
Friday
Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 27. Chance of precipitation is 60%.
Friday Night
Snow showers. Low around 13. Chance of precipitation is 80%.
Saturday
Snow showers likely. Mostly cloudy, with a high near 23. Chance of precipitation is 60%.
Saturday Night
Snow showers likely. Mostly cloudy, with a low around 11. Chance of precipitation is 60%.
Sunday
A chance of snow showers. Mostly cloudy, with a high near 21. Chance of precipitation is 40%.
Sunday Night
Mostly cloudy, with a low around 5.
Monday
A chance of snow showers. Mostly cloudy, with a high near 25. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Ridgway PA
 41.41°N 78.78°W (Elev. 1706 ft)
Last Update:
7:05 pm EST Dec 8, 2025
Forecast Valid:
12am EST Dec 9, 2025-6pm EST Dec 15, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation