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

79°F

26°C

Humidity 44%
Wind Speed Vrbl 6 mph
Barometer 30.26 in (1024.1 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 29 Aug 12:56 pm EDT
Extended Forecast for

Canonsburg PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 80. Southeast wind 3 to 5 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 86. South wind 5 to 9 mph becoming west in the afternoon.

    High: 86 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 68. Calm wind. Chance of precipitation is 20%.

    Low: 68 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday

    Monday: Partly sunny, with a high near 88. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 88 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 72.

    Low: 72 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 91.

    High: 91 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 91.

    High: 91 °F

    Hot

Detailed Forecast

This Afternoon
Sunny, with a high near 80. Southeast wind 3 to 5 mph.
Tonight
Partly cloudy, with a low around 64. Calm wind.
Sunday
Mostly sunny, with a high near 86. South wind 5 to 9 mph becoming west in the afternoon.
Sunday Night
A slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 68. Calm wind. Chance of precipitation is 20%.
Monday
Partly sunny, with a high near 88. Calm wind becoming west 5 to 9 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 72.
Tuesday
Mostly sunny and hot, with a high near 91.
Tuesday Night
Partly cloudy, with a low around 73.
Wednesday
Mostly sunny and hot, with a high near 91.
Wednesday Night
Partly cloudy, with a low around 73.
Thursday
A chance of showers. Partly sunny, with a high near 89. Chance of precipitation is 40%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.
Friday
A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Canonsburg PA
 40.25°N 80.18°W (Elev. 997 ft)
Last Update:
1:01 pm EDT Aug 29, 2026
Forecast Valid:
1pm EDT Aug 29, 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