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 93%
Wind Speed SE 9 mph
Barometer 29.69 in
Dewpoint 27°F (-3°C)
Visibility 2.00 mi
Wind Chill19°F (-7°C)
Last update 26 Dec 5:55 pm EST
Extended Forecast for

11 Miles WSW Galeton PA

Winter Weather Advisory December 26, 05:59pm until December 27, 07:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 26, 05:59pm until December 27, 07:00am

    NOW until 7:00am Sat

    Winter Weather Advisory

  • This Afternoon

    High: 24 °F

    Wintry Mix

  • Tonight

    Tonight: Freezing rain and sleet, mainly before 11pm. Low around 21. South wind 8 to 13 mph becoming light and variable. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New ice accumulation of less than a 0.1 of an inch possible. New sleet accumulation of less than a half inch possible.

    Low: 21 °F

    Wintry Mix
    then Cloudy

  • Saturday

    Saturday: Cloudy, then gradually becoming mostly sunny, with a high near 29. North wind around 6 mph becoming calm in the afternoon.

    High: 29 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 19. Calm wind becoming south around 5 mph after midnight.

    Low: 19 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of freezing rain before 1pm, then rain or freezing rain between 1pm and 4pm, then rain showers after 4pm. High near 36. South wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 36 °F

    Chance
    Freezing Rain
    then
    Rain/Freezing
    Rain

  • Sunday Night

    Sunday Night: Rain showers before 7pm, then rain or freezing rain between 7pm and 10pm, then rain showers after 10pm. Low around 32. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 32 °F

    Rain/Freezing
    Rain then
    Showers

  • Monday

    Monday: Rain showers before 1pm, then a chance of snow showers. High near 46. Breezy. Chance of precipitation is 80%.

    High: 46 °F

    Showers then
    Rain/Snow and
    Breezy

  • Monday Night

    Monday Night: Snow showers likely. Mostly cloudy, with a low around 17. Breezy. Chance of precipitation is 70%.

    Low: 17 °F

    Snow Showers
    Likely and
    Breezy

Detailed Forecast

This Afternoon
Sleet, possibly mixed with freezing rain. The sleet could be heavy at times. High near 24. South wind around 13 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. Total daytime ice accumulation of less than a 0.1 of an inch possible. Total daytime sleet accumulation of less than one inch possible.
Tonight
Freezing rain and sleet, mainly before 11pm. Low around 21. South wind 8 to 13 mph becoming light and variable. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New ice accumulation of less than a 0.1 of an inch possible. New sleet accumulation of less than a half inch possible.
Saturday
Cloudy, then gradually becoming mostly sunny, with a high near 29. North wind around 6 mph becoming calm in the afternoon.
Saturday Night
Mostly cloudy, with a low around 19. Calm wind becoming south around 5 mph after midnight.
Sunday
A chance of freezing rain before 1pm, then rain or freezing rain between 1pm and 4pm, then rain showers after 4pm. High near 36. South wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain showers before 7pm, then rain or freezing rain between 7pm and 10pm, then rain showers after 10pm. Low around 32. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
Rain showers before 1pm, then a chance of snow showers. High near 46. Breezy. Chance of precipitation is 80%.
Monday Night
Snow showers likely. Mostly cloudy, with a low around 17. Breezy. Chance of precipitation is 70%.
Tuesday
A chance of snow showers. Mostly cloudy, with a high near 22. Breezy. Chance of precipitation is 50%.
Tuesday Night
A chance of snow showers. Mostly cloudy, with a low around 17. Chance of precipitation is 40%.
Wednesday
A chance of snow showers. Mostly cloudy, with a high near 24. Chance of precipitation is 50%.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 12. Chance of precipitation is 40%.
New Year's Day
A chance of snow showers. Mostly cloudy, with a high near 18. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 9.
Friday
Mostly cloudy, with a high near 17.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles WSW Galeton PA
 41.65°N 77.83°W (Elev. 2113 ft)
Last Update:
3:31 pm EST Dec 26, 2025
Forecast Valid:
5pm EST Dec 26, 2025-6pm EST Jan 2, 2026
 
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