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

37°F

3°C

Humidity 93%
Wind Speed E 5 mph
Barometer 30.12 in
Dewpoint 36°F (2°C)
Visibility 5.00 mi
Wind Chill33°F (1°C)
Last update 20 Nov 1:35 pm EST
Extended Forecast for

Byrnedale PA

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 44. Calm wind.

    High: 44 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy fog between 10pm and 1am. Otherwise, mostly cloudy, with a low around 35. Calm wind.

    Low: 35 °F

    Patchy Fog

  • Friday

    Friday: Cloudy, with a high near 51. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 51 °F

    Cloudy

  • Friday Night

    Friday Night: A chance of rain. Cloudy, with a low around 34. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 45. Calm wind becoming northwest around 6 mph in the morning.

    High: 45 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 44. Calm wind.
Tonight
Patchy fog between 10pm and 1am. Otherwise, mostly cloudy, with a low around 35. Calm wind.
Friday
Cloudy, with a high near 51. Calm wind becoming southwest around 6 mph in the afternoon.
Friday Night
A chance of rain. Cloudy, with a low around 34. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly sunny, with a high near 45. Calm wind becoming northwest around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 26.
Sunday
Mostly sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 32.
Monday
Mostly sunny, with a high near 51.
Monday Night
A chance of showers after 1am. Mostly cloudy, with a low around 34. Chance of precipitation is 40%.
Tuesday
Showers. High near 51. Chance of precipitation is 80%.
Tuesday Night
Showers. Low around 42. Chance of precipitation is 80%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 55. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Byrnedale PA
 41.29°N 78.48°W (Elev. 1447 ft)
Last Update:
1:33 pm EST Nov 20, 2025
Forecast Valid:
1pm EST Nov 20, 2025-6pm EST Nov 26, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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