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.

Overcast

37°F

3°C

Humidity 81%
Wind Speed NW 5 mph
Barometer 30.20 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 10 Jan 12:15 am EST
Extended Forecast for

5 Miles WNW Emporium PA

  • Overnight

    Overnight: Patchy fog after 1am. Otherwise, cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Patchy Fog

  • Saturday

    Saturday: Rain likely, mainly after 1pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 42. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 42 °F

    Patchy Fog
    then Rain
    Likely

  • Saturday Night

    Saturday Night: Rain before 1am, then a slight chance of rain and snow showers between 1am and 4am, then a slight chance of snow showers after 4am. Patchy fog before midnight. Low around 27. Light and variable wind becoming west 5 to 8 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 27 °F

    Rain and
    Patchy Fog
    then
    Rain/Snow

  • Sunday

    Sunday: Snow showers likely, mainly after 1pm. Partly sunny, with a high near 31. West wind 8 to 13 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 31 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Sunday Night

    Sunday Night: A slight chance of snow showers before 1am. Mostly cloudy, with a low around 23. West wind 8 to 11 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.

    Low: 23 °F

    Slight Chance
    Snow Showers

  • Monday

    Monday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain after 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Overnight
Patchy fog after 1am. Otherwise, cloudy, with a low around 31. Calm wind.
Saturday
Rain likely, mainly after 1pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 42. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Rain before 1am, then a slight chance of rain and snow showers between 1am and 4am, then a slight chance of snow showers after 4am. Patchy fog before midnight. Low around 27. Light and variable wind becoming west 5 to 8 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Sunday
Snow showers likely, mainly after 1pm. Partly sunny, with a high near 31. West wind 8 to 13 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
A slight chance of snow showers before 1am. Mostly cloudy, with a low around 23. West wind 8 to 11 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.
Monday
Partly sunny, with a high near 33.
Monday Night
Partly cloudy, with a low around 26.
Tuesday
Partly sunny, with a high near 40.
Tuesday Night
A chance of rain after 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Wednesday
Rain likely, mainly after 1pm. Mostly cloudy, with a high near 39. Chance of precipitation is 60%.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 19. Chance of precipitation is 40%.
Thursday
Partly sunny, with a high near 26.
Thursday Night
Mostly cloudy, with a low around 14.
Friday
Partly sunny, with a high near 27.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WNW Emporium PA
 41.54°N 78.32°W (Elev. 1424 ft)
Last Update:
9:51 pm EST Jan 9, 2026
Forecast Valid:
12am EST Jan 10, 2026-6pm EST Jan 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation