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

64°F

18°C

Humidity 60%
Wind Speed S 6 mph
Barometer 30.10 in (1018.9 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 12 Apr 10:56 pm EDT
Extended Forecast for

Canonsburg PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 62. Southwest wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Mostly Cloudy

  • Monday

    Monday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 74. Southwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 74 °F

    Showers
    Likely then
    Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 61. Southwest wind 7 to 9 mph. Chance of precipitation is 30%.

    Low: 61 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 81. Southwest wind 9 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Southwest wind around 9 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, mainly after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 84 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 40%.

    High: 82 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 2am. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.

    Low: 60 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 62. Southwest wind 7 to 10 mph, with gusts as high as 20 mph.
Monday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 74. Southwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A slight chance of showers and thunderstorms before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 61. Southwest wind 7 to 9 mph. Chance of precipitation is 30%.
Tuesday
A chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 81. Southwest wind 9 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Southwest wind around 9 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers, mainly after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A chance of showers before 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Thursday
A chance of showers after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 40%.
Thursday Night
A chance of showers before 2am. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Friday
Sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 60.
Saturday
A chance of showers. Partly sunny, with a high near 86. Chance of precipitation is 40%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.
Sunday
A chance of showers. Partly sunny, with a high near 73. Chance of precipitation is 50%.
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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:
7:21 pm EDT Apr 12, 2026
Forecast Valid:
11pm EDT Apr 12, 2026-6pm EDT Apr 19, 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