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

25°C

77°F

Humidity 34%
Wind Speed NW 22 G 30 km/h
Barometer 30.02 in
Dewpoint 8°C (46°F)
Visibility 16 km
Heat Index26°C (78°F)
Last update 3 Jul 6:35 pm EDT
Extended Forecast for

Byrnedale PA

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, clear, with a low around 12. Northwest wind 6 to 11 km/h becoming light in the evening.

    Low: 12 °C

    Clear then
    Patchy Fog

  • Independence Day

    Independence Day: Patchy fog before 7am. Otherwise, sunny, with a high near 27. Calm wind.

    High: 27 °C

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 14. Calm wind.

    Low: 14 °C

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 31. Calm wind.

    High: 31 °C

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 17. Calm wind.

    Low: 17 °C

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 32.

    High: 32 °C

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 19.

    Low: 19 °C

    Mostly Clear

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 31. Chance of precipitation is 40%.

    High: 31 °C

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.

    Low: 19 °C

    Chance
    T-storms

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, clear, with a low around 12. Northwest wind 6 to 11 km/h becoming light in the evening.
Independence Day
Patchy fog before 7am. Otherwise, sunny, with a high near 27. Calm wind.
Friday Night
Mostly clear, with a low around 14. Calm wind.
Saturday
Sunny, with a high near 31. Calm wind.
Saturday Night
Mostly clear, with a low around 17. Calm wind.
Sunday
Sunny, with a high near 32.
Sunday Night
Mostly clear, with a low around 19.
Monday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 31. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.
Tuesday
A chance of showers after 2pm. Partly sunny, with a high near 29. Chance of precipitation is 40%.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 17. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 29. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 28. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Byrnedale PA
 41.32°N 78.48°W (Elev. 1506 m)
Last Update:
3:36 pm EDT Jul 3, 2025
Forecast Valid:
6pm EDT Jul 3, 2025-6pm EDT Jul 10, 2025
 
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