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.

Fair

88°F

31°C

Humidity 66%
Wind Speed SW 3 mph
Barometer 30.10 in (1018.2 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 1 Jul 7:56 pm EDT
Extended Forecast for

Canonsburg PA

Extreme Heat Warning July 1, 08:08pm until July 3, 10:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 1, 08:08pm until July 3, 10:00pm

    NOW until 10:00pm Fri

    Extreme Heat Warning

  • Tonight

    Low: 73 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 96. Heat index values as high as 104. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 96 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 76. Southwest wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 96. Heat index values as high as 103. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 96 °F

    Hot

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 74. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    T-storms

  • Independence Day

    Independence Day: A chance of showers and thunderstorms after 2pm. Partly sunny and hot, with a high near 93. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.

    Low: 71 °F

    Chance
    T-storms

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm after 2pm. Partly sunny and hot, with a high near 90. Chance of precipitation is 70%.

    High: 90 °F

    Mostly Sunny
    then Showers
    Likely

Detailed Forecast

Tonight
Clear, with a low around 73. West wind around 5 mph becoming calm in the evening.
Thursday
Sunny and hot, with a high near 96. Heat index values as high as 104. Calm wind becoming west 5 to 8 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 76. Southwest wind around 5 mph becoming calm in the evening.
Friday
Sunny and hot, with a high near 96. Heat index values as high as 103. Calm wind becoming west 5 to 9 mph in the afternoon.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 74. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Independence Day
A chance of showers and thunderstorms after 2pm. Partly sunny and hot, with a high near 93. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.
Sunday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny and hot, with a high near 90. Chance of precipitation is 70%.
Sunday Night
Showers likely and possibly a thunderstorm before 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 40%.
Tuesday Night
A chance of thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. 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 80.21°W (Elev. 997 ft)
Last Update:
7:51 pm EDT Jul 1, 2026
Forecast Valid:
8pm EDT Jul 1, 2026-6pm EDT Jul 8, 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