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

32°F

0°C

Humidity 75%
Wind Speed W 10 mph
Barometer 29.83 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 6 Dec 12:55 pm EST
Extended Forecast for

Byrnedale PA

  • This Afternoon

    This Afternoon: A slight chance of snow after 3pm. Mostly cloudy, with a high near 36. Southwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    High: 36 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: Mostly cloudy, with a low around 23. West wind around 6 mph becoming calm in the evening.

    Low: 23 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of snow, mainly after 4pm. Mostly cloudy, with a high near 35. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 30%.

    High: 35 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday Night

    Sunday Night: A chance of snow before 1am. Mostly cloudy, with a low around 14. West wind around 6 mph becoming north after midnight. Chance of precipitation is 30%.

    Low: 14 °F

    Chance Snow

  • Monday

    Monday: Mostly sunny, with a high near 24. North wind 3 to 6 mph.

    High: 24 °F

    Mostly Sunny

  • Monday Night

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

    Low: 7 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of snow after 1pm. Mostly cloudy, with a high near 34. Chance of precipitation is 40%.

    High: 34 °F

    Partly Sunny
    then Chance
    Snow

  • Tuesday Night

    Tuesday Night: Snow likely, mainly after 1am. Mostly cloudy, with a low around 27. Chance of precipitation is 60%.

    Low: 27 °F

    Chance Snow
    then Snow
    Likely

  • Wednesday

    Wednesday: Rain. High near 39. Chance of precipitation is 90%.

    High: 39 °F

    Rain

Detailed Forecast

This Afternoon
A slight chance of snow after 3pm. Mostly cloudy, with a high near 36. Southwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, with a low around 23. West wind around 6 mph becoming calm in the evening.
Sunday
A chance of snow, mainly after 4pm. Mostly cloudy, with a high near 35. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 30%.
Sunday Night
A chance of snow before 1am. Mostly cloudy, with a low around 14. West wind around 6 mph becoming north after midnight. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 24. North wind 3 to 6 mph.
Monday Night
Partly cloudy, with a low around 7.
Tuesday
A chance of snow after 1pm. Mostly cloudy, with a high near 34. Chance of precipitation is 40%.
Tuesday Night
Snow likely, mainly after 1am. Mostly cloudy, with a low around 27. Chance of precipitation is 60%.
Wednesday
Rain. High near 39. Chance of precipitation is 90%.
Wednesday Night
Snow. Low around 25. Chance of precipitation is 90%.
Thursday
A chance of snow. Mostly cloudy, with a high near 33. Chance of precipitation is 50%.
Thursday Night
Snow likely. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.
Friday
Snow likely. Mostly cloudy, with a high near 30. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Byrnedale PA
 41.32°N 78.48°W (Elev. 1506 ft)
Last Update:
12:56 pm EST Dec 6, 2025
Forecast Valid:
1pm EST Dec 6, 2025-6pm EST Dec 12, 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