National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Du Bois - Jefferson County Airport (KDUJ)

Lat: 41.18°NLon: 78.89°WElev: 1804ft.

Fair

65°F

18°C

Humidity 87%
Wind Speed N 5 mph
Barometer 30.01 in (1014.9 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 10 Sep 11:53 pm EDT
Extended Forecast for

Saint Marys PA

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Patchy Fog

  • Friday

    Friday: Areas of fog before 10am. Otherwise, sunny, with a high near 75. Light north wind.

    High: 75 °F

    Areas Fog
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 76. South wind 5 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 76 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 64. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Showers
    Likely

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78. Chance of precipitation is 20%.

    High: 78 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 52. Calm wind.
Friday
Areas of fog before 10am. Otherwise, sunny, with a high near 75. Light north wind.
Friday Night
Partly cloudy, with a low around 52. Calm wind.
Saturday
A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 76. South wind 5 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 64. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 58. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 50%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.
Thursday
Showers likely. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys PA
 41.44°N 78.57°W (Elev. 1795 ft)
Last Update:
8:11 pm EDT Sep 10, 2026
Forecast Valid:
11pm EDT Sep 10, 2026-6pm EDT Sep 17, 2026
 
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