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.

Partly Cloudy

10°F

-12°C

Humidity 79%
Wind Speed Calm
Barometer 30.19 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Last update 5 Dec 1:35 am EST
Extended Forecast for

Emporium PA

  • Overnight

    Overnight: Mostly clear, with a low around 6. Calm wind.

    Low: 6 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 31. Calm wind becoming south around 6 mph in the morning.

    High: 31 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 21. Calm wind.

    Low: 21 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 38. Southwest wind 3 to 7 mph.

    High: 38 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A slight chance of snow after 1am. Mostly cloudy, with a low around 24. Light west wind. Chance of precipitation is 20%.

    Low: 24 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: Snow likely before 4pm, then snow likely, possibly mixed with rain. Mostly cloudy, with a high near 36. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 36 °F

    Slight Chance
    Snow then
    Rain/Snow
    Likely

  • Sunday Night

    Sunday Night: A chance of snow before 1am. Mostly cloudy, with a low around 15. Chance of precipitation is 40%.

    Low: 15 °F

    Chance Snow

  • Monday

    Monday: Mostly sunny, with a high near 26.

    High: 26 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 7.

    Low: 7 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 6. Calm wind.
Friday
Increasing clouds, with a high near 31. Calm wind becoming south around 6 mph in the morning.
Friday Night
Mostly cloudy, with a low around 21. Calm wind.
Saturday
Mostly cloudy, with a high near 38. Southwest wind 3 to 7 mph.
Saturday Night
A slight chance of snow after 1am. Mostly cloudy, with a low around 24. Light west wind. Chance of precipitation is 20%.
Sunday
Snow likely before 4pm, then snow likely, possibly mixed with rain. Mostly cloudy, with a high near 36. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Sunday Night
A chance of snow before 1am. Mostly cloudy, with a low around 15. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 26.
Monday Night
Partly cloudy, with a low around 7.
Tuesday
Snow likely, mainly after 1pm. Mostly cloudy, with a high near 34. Chance of precipitation is 60%.
Tuesday Night
Snow likely. Cloudy, with a low around 25. Chance of precipitation is 60%.
Wednesday
Rain and snow. High near 41. Chance of precipitation is 80%.
Wednesday Night
Rain and snow. Low around 26. Chance of precipitation is 90%.
Thursday
Rain and snow likely. Mostly cloudy, with a high near 35. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Emporium PA
 41.51°N 78.24°W (Elev. 1099 ft)
Last Update:
1:20 am EST Dec 5, 2025
Forecast Valid:
1am EST Dec 5, 2025-6pm EST Dec 11, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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