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

Washington County Airport (KAFJ)

Lat: 40.14°NLon: 80.29°WElev: 1184ft.

Fair

75°F

24°C

Humidity 60%
Wind Speed N 8 mph
Barometer 30.16 in (1020.6 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 28 Aug 6:56 pm EDT
Extended Forecast for

Canonsburg PA

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly clear, with a low around 54. North wind 5 to 7 mph becoming calm after midnight.

    Low: 54 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, sunny, with a high near 82. Light and variable wind.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 85. West wind 3 to 8 mph.

    High: 85 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 90.

    High: 90 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 54. North wind 5 to 7 mph becoming calm after midnight.
Saturday
Patchy fog before 9am. Otherwise, sunny, with a high near 82. Light and variable wind.
Saturday Night
Partly cloudy, with a low around 63. Calm wind.
Sunday
Mostly sunny, with a high near 85. West wind 3 to 8 mph.
Sunday Night
Mostly cloudy, with a low around 68. Calm wind.
Monday
Partly sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 71.
Tuesday
Mostly sunny and hot, with a high near 90.
Tuesday Night
Partly cloudy, with a low around 72.
Wednesday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.
Thursday
A chance of showers. Partly sunny, with a high near 86. Chance of precipitation is 40%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Friday
A chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Canonsburg PA
 40.27°N 80.18°W (Elev. 1030 ft)
Last Update:
6:45 pm EDT Aug 28, 2026
Forecast Valid:
7pm EDT Aug 28, 2026-6pm EDT Sep 4, 2026
 
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