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

45°F

7°C

Humidity 61%
Wind Speed E 7 mph
Barometer 30.06 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 25 Nov 9:15 am EST
Extended Forecast for

3 Miles S De Young PA

  • Today

    Today: Rain, mainly after 11am. High near 50. Southeast wind 6 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 50 °F

    Rain

  • Tonight

    Tonight: Rain. Low around 42. South wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 42 °F

    Rain

  • Wednesday

    Wednesday: Rain before 4pm, then a chance of rain and snow. Temperature rising to near 52 by 11am, then falling to around 41 during the remainder of the day. Southwest wind 6 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 52 °F⇓

    Rain then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: A chance of rain and snow showers before 7pm, then a chance of snow showers. Mostly cloudy, with a low around 25. West wind 14 to 16 mph, with gusts as high as 39 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 25 °F

    Chance
    Rain/Snow
    then Chance
    Snow Showers

  • Thanksgiving Day

    Thanksgiving Day: Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 31. West wind 15 to 17 mph, with gusts as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 31 °F

    Snow Showers
    Likely

  • Thursday Night

    Thursday Night: Snow showers. Low around 22. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    Low: 22 °F

    Snow Showers

  • Friday

    Friday: Snow showers, mainly before 1pm. High near 31. Chance of precipitation is 80%.

    High: 31 °F

    Snow Showers

  • Friday Night

    Friday Night: A chance of snow showers before 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 40%.

    Low: 20 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 30.

    High: 30 °F

    Mostly Cloudy

Detailed Forecast

Today
Rain, mainly after 11am. High near 50. Southeast wind 6 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Rain. Low around 42. South wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain before 4pm, then a chance of rain and snow. Temperature rising to near 52 by 11am, then falling to around 41 during the remainder of the day. Southwest wind 6 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Wednesday Night
A chance of rain and snow showers before 7pm, then a chance of snow showers. Mostly cloudy, with a low around 25. West wind 14 to 16 mph, with gusts as high as 39 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thanksgiving Day
Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 31. West wind 15 to 17 mph, with gusts as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow showers. Low around 22. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Friday
Snow showers, mainly before 1pm. High near 31. Chance of precipitation is 80%.
Friday Night
A chance of snow showers before 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 40%.
Saturday
Mostly cloudy, with a high near 30.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 21. Chance of precipitation is 50%.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 37. Chance of precipitation is 50%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. Chance of precipitation is 50%.
Monday
Rain likely. Mostly cloudy, with a high near 39. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S De Young PA
 41.53°N 78.91°W (Elev. 1831 ft)
Last Update:
7:46 am EST Nov 25, 2025
Forecast Valid:
9am EST Nov 25, 2025-6pm EST Dec 1, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation