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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

2 Miles ESE Byrnedale PA

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms. Mostly cloudy, with a high near 70. Southwest wind around 15 mph, with gusts as high as 31 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms before midnight, then showers likely. Low around 29. Southwest wind 10 to 13 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 29 °F

    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Partly sunny, with a high near 37. West wind around 15 mph, with gusts as high as 29 mph.

    High: 37 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26. West wind around 6 mph becoming calm in the evening.

    Low: 26 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow before 11am, then a chance of rain and snow between 11am and 2pm, then a chance of rain after 2pm. Mostly cloudy, with a high near 47. South wind 6 to 14 mph, with gusts as high as 37 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 47 °F

    Chance
    Rain/Snow

  • Friday Night

    Friday Night: A slight chance of rain before 11pm, then a slight chance of snow between 11pm and 2am. Mostly cloudy, with a low around 27. Chance of precipitation is 20%.

    Low: 27 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Saturday

    Saturday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of snow showers after 2am. Mostly cloudy, with a low around 27. Chance of precipitation is 50%.

    Low: 27 °F

    Partly Cloudy
    then Chance
    Snow Showers

  • Sunday

    Sunday: A chance of snow showers before 2pm. Mostly cloudy, with a high near 52. Chance of precipitation is 40%.

    High: 52 °F

    Chance Snow
    Showers

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Mostly cloudy, with a high near 70. Southwest wind around 15 mph, with gusts as high as 31 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before midnight, then showers likely. Low around 29. Southwest wind 10 to 13 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Partly sunny, with a high near 37. West wind around 15 mph, with gusts as high as 29 mph.
Thursday Night
Partly cloudy, with a low around 26. West wind around 6 mph becoming calm in the evening.
Friday
A chance of snow before 11am, then a chance of rain and snow between 11am and 2pm, then a chance of rain after 2pm. Mostly cloudy, with a high near 47. South wind 6 to 14 mph, with gusts as high as 37 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Friday Night
A slight chance of rain before 11pm, then a slight chance of snow between 11pm and 2am. Mostly cloudy, with a low around 27. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 41.
Saturday Night
A chance of snow showers after 2am. Mostly cloudy, with a low around 27. Chance of precipitation is 50%.
Sunday
A chance of snow showers before 2pm. Mostly cloudy, with a high near 52. Chance of precipitation is 40%.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.
Monday
Rain and snow showers likely. Mostly cloudy, with a high near 52. Chance of precipitation is 70%.
Monday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 17. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 28.
Tuesday Night
Partly cloudy, with a low around 15.
Wednesday
Partly sunny, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Byrnedale PA
 41.31°N 78.45°W (Elev. 1634 ft)
Last Update:
4:26 pm EDT Mar 11, 2026
Forecast Valid:
5pm EDT Mar 11, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation