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

28°F

-2°C

Humidity 80%
Wind Speed W 8 mph
Barometer 30.31 in
Dewpoint 23°F (-5°C)
Visibility 5.00 mi
Wind Chill20°F (-7°C)
Last update 29 Nov 2:15 am EST
Extended Forecast for

8 Miles WSW Emporium PA

  • Overnight

    Overnight: A chance of snow showers, mainly before 4am. Mostly cloudy, with a low around 22. West wind around 7 mph. Chance of precipitation is 30%.

    Low: 22 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 36. West wind around 5 mph becoming calm in the afternoon.

    High: 36 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Snow showers likely after 10pm. Cloudy, with a low around 25. Light southeast wind becoming south 6 to 11 mph in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 25 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Sunday

    Sunday: Snow showers, possibly mixed with rain before 1pm, then a chance of rain showers between 1pm and 4pm, then a chance of rain and snow showers after 4pm. High near 41. South wind around 11 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    High: 41 °F

    Rain/Snow

  • Sunday Night

    Sunday Night: Snow showers likely, mainly after 7pm. Mostly cloudy, with a low around 22. West wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 22 °F

    Snow Showers
    Likely

  • Monday

    Monday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of snow showers after 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 50%.

    Low: 20 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Tuesday

    Tuesday: Snow showers. High near 35. Chance of precipitation is 80%.

    High: 35 °F

    Snow Showers

  • Tuesday Night

    Tuesday Night: A chance of snow showers before 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 40%.

    Low: 18 °F

    Chance Snow
    Showers

Detailed Forecast

Overnight
A chance of snow showers, mainly before 4am. Mostly cloudy, with a low around 22. West wind around 7 mph. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 36. West wind around 5 mph becoming calm in the afternoon.
Saturday Night
Snow showers likely after 10pm. Cloudy, with a low around 25. Light southeast wind becoming south 6 to 11 mph in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Sunday
Snow showers, possibly mixed with rain before 1pm, then a chance of rain showers between 1pm and 4pm, then a chance of rain and snow showers after 4pm. High near 41. South wind around 11 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Sunday Night
Snow showers likely, mainly after 7pm. Mostly cloudy, with a low around 22. West wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday
Partly sunny, with a high near 33.
Monday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 50%.
Tuesday
Snow showers. High near 35. Chance of precipitation is 80%.
Tuesday Night
A chance of snow showers before 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 40%.
Wednesday
Mostly cloudy, with a high near 33.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 20. Chance of precipitation is 40%.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 30. Chance of precipitation is 40%.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 9. Chance of precipitation is 30%.
Friday
A chance of snow showers. Mostly cloudy, with a high near 29. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles WSW Emporium PA
 41.48°N 78.39°W (Elev. 1545 ft)
Last Update:
1:53 am EST Nov 29, 2025
Forecast Valid:
2am EST Nov 29, 2025-6pm EST Dec 5, 2025
 
Forecast Discussion
 
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Additional Resources

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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