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.

Mostly Cloudy

34°F

1°C

Humidity 93%
Wind Speed E 3 mph
Barometer 30.17 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 10 Jan 5:35 am EST
Extended Forecast for

4 Miles WNW Emporium PA

  • Today

    Today: Rain, mainly after 4pm. Patchy fog before 9am. High near 40. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 40 °F

    Patchy Fog
    then Rain

  • Tonight

    Tonight: Rain before 10pm, then showers likely between 10pm and midnight. Patchy fog between 10pm and midnight. Low around 27. Light and variable wind becoming west 5 to 8 mph after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 27 °F

    Rain and
    Patchy Fog
    then Mostly
    Cloudy

  • Sunday

    Sunday: Snow showers likely, mainly after 1pm. Partly sunny, with a high near 33. West wind 8 to 16 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Slight Chance
    Snow Showers
    then Snow
    Showers
    Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 24. West wind 11 to 16 mph, with gusts as high as 37 mph.

    Low: 24 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 36. West wind 8 to 10 mph, with gusts as high as 22 mph.

    High: 36 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 34. Chance of precipitation is 40%.

    Low: 34 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 40. Chance of precipitation is 60%.

    High: 40 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Today
Rain, mainly after 4pm. Patchy fog before 9am. High near 40. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain before 10pm, then showers likely between 10pm and midnight. Patchy fog between 10pm and midnight. Low around 27. Light and variable wind becoming west 5 to 8 mph after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Snow showers likely, mainly after 1pm. Partly sunny, with a high near 33. West wind 8 to 16 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday Night
Mostly cloudy, with a low around 24. West wind 11 to 16 mph, with gusts as high as 37 mph.
Monday
Partly sunny, with a high near 36. West wind 8 to 10 mph, with gusts as high as 22 mph.
Monday Night
Mostly cloudy, with a low around 28.
Tuesday
Partly sunny, with a high near 42.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 34. Chance of precipitation is 40%.
Wednesday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 40. Chance of precipitation is 60%.
Wednesday Night
A chance of rain and snow showers before 1am, then a chance of snow showers. Mostly cloudy, with a low around 18. Chance of precipitation is 40%.
Thursday
Mostly sunny, with a high near 27.
Thursday Night
Partly cloudy, with a low around 15.
Friday
Partly sunny, with a high near 30.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Emporium PA
 41.54°N 78.29°W (Elev. 1175 ft)
Last Update:
1:06 am EST Jan 10, 2026
Forecast Valid:
5am EST Jan 10, 2026-6pm EST Jan 16, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation