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.

A Few Clouds

72°F

22°C

Humidity 52%
Wind Speed NE 7 mph
Barometer 30.25 in (1023.9 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 23 Jul 12:56 pm EDT
Extended Forecast for

Canonsburg PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 76. Northeast wind around 6 mph.

    High: 76 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 54. Northeast wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 80. Southeast wind 3 to 6 mph.

    High: 80 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. East wind around 5 mph becoming calm after midnight.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 82. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    Showers then
    Patchy Fog

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Patchy fog before 7am. Otherwise, mostly sunny, with a high near 83. Chance of precipitation is 30%.

    High: 83 °F

    Patchy Fog
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 65. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.

    High: 85 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 76. Northeast wind around 6 mph.
Tonight
Mostly clear, with a low around 54. Northeast wind around 5 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 80. Southeast wind 3 to 6 mph.
Friday Night
Partly cloudy, with a low around 62. East wind around 5 mph becoming calm after midnight.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 82. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 8pm. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 63. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms after 2pm. Patchy fog before 7am. Otherwise, mostly sunny, with a high near 83. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Canonsburg PA
 40.27°N 80.18°W (Elev. 1030 ft)
Last Update:
1:01 pm EDT Jul 23, 2026
Forecast Valid:
1pm EDT Jul 23, 2026-6pm EDT Jul 29, 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