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

Hazardous Weather Conditions

Current conditions at

Washington County Airport (KAFJ)

Lat: 40.14°NLon: 80.29°WElev: 1184ft.

A Few Clouds

71°F

22°C

Humidity 96%
Wind Speed Vrbl 6 mph
Barometer 30.14 in (1019.9 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 7 Aug 10:56 pm EDT
Extended Forecast for

Canonsburg PA

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 67. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Showers

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly before 2pm. Partly sunny, with a high near 83. Southwest wind 9 to 13 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly between 11pm and 2am. Mostly cloudy, with a low around 67. Southwest wind 3 to 8 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 84. West wind 3 to 7 mph.

    High: 84 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: A slight chance of showers after 2am. Mostly clear, with a low around 66. Light south wind. Chance of precipitation is 20%.

    Low: 66 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Monday

    Monday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

    Low: 69 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 82. Chance of precipitation is 80%.

    High: 82 °F

    Chance
    Showers then
    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 2am, then showers likely. Low around 66. Chance of precipitation is 80%.

    Low: 66 °F

    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 67. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and thunderstorms likely, mainly before 2pm. Partly sunny, with a high near 83. Southwest wind 9 to 13 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms, mainly between 11pm and 2am. Mostly cloudy, with a low around 67. Southwest wind 3 to 8 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 84. West wind 3 to 7 mph.
Sunday Night
A slight chance of showers after 2am. Mostly clear, with a low around 66. Light south wind. Chance of precipitation is 20%.
Monday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Tuesday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 82. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 66. Chance of precipitation is 80%.
Wednesday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 40%.
Thursday Night
A chance of thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Canonsburg PA
 40.25°N 80.16°W (Elev. 1106 ft)
Last Update:
11:31 pm EDT Aug 7, 2026
Forecast Valid:
11pm EDT Aug 7, 2026-6pm EDT Aug 14, 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