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.

N/A

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

Johnsonburg PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 56. Light south wind.

    Low: 56 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11am. Some of the storms could be severe. High near 68. South wind 8 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 68 °F

    Severe
    Thunderstorms

  • Wednesday Night

    Wednesday Night: Rain showers before 2am, then a chance of rain and snow showers. Some thunder is also possible. Low around 28. Southwest wind around 17 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Severe
    Thunderstorms
    then
    Rain/Snow

  • Thursday

    Thursday: A chance of snow showers before 8am. Cloudy through mid morning, then gradual clearing, with a high near 37. Northwest wind 15 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 30%.

    High: 37 °F

    Chance Snow
    Showers then
    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 27. West wind 5 to 7 mph becoming light and variable after midnight.

    Low: 27 °F

    Partly Cloudy

  • Friday

    Friday: Rain likely, possibly mixed with snow showers, mainly after 2pm. Mostly cloudy, with a high near 45. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 45 °F

    Rain/Snow
    Likely

  • Friday Night

    Friday Night: Rain showers likely, possibly mixing with snow after 8pm, then gradually ending. Mostly cloudy, with a low around 25. Chance of precipitation is 60%.

    Low: 25 °F

    Rain/Snow
    Likely then
    Chance
    Rain/Snow

  • Saturday

    Saturday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of snow showers after 2am. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Snow Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 56. Light south wind.
Wednesday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11am. Some of the storms could be severe. High near 68. South wind 8 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday Night
Rain showers before 2am, then a chance of rain and snow showers. Some thunder is also possible. Low around 28. Southwest wind around 17 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Thursday
A chance of snow showers before 8am. Cloudy through mid morning, then gradual clearing, with a high near 37. Northwest wind 15 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 27. West wind 5 to 7 mph becoming light and variable after midnight.
Friday
Rain likely, possibly mixed with snow showers, mainly after 2pm. Mostly cloudy, with a high near 45. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Friday Night
Rain showers likely, possibly mixing with snow after 8pm, then gradually ending. Mostly cloudy, with a low around 25. Chance of precipitation is 60%.
Saturday
Partly sunny, with a high near 41.
Saturday Night
A chance of snow showers after 2am. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Sunday
A chance of rain and snow showers before 2pm, then a chance of rain showers. Mostly cloudy, with a high near 55. Chance of precipitation is 40%.
Sunday Night
Rain and snow showers. Low around 30. Chance of precipitation is 80%.
Monday
Rain and snow showers. High near 42. Chance of precipitation is 80%.
Monday Night
A chance of snow showers. Mostly cloudy, with a low around 15. Chance of precipitation is 30%.
Tuesday
Mostly cloudy, with a high near 26.
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ABOUT THIS FORECAST

 
Point Forecast:
Johnsonburg PA
 41.49°N 78.65°W (Elev. 1650 ft)
Last Update:
8:51 pm EDT Mar 10, 2026
Forecast Valid:
12am EDT Mar 11, 2026-6pm EDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation