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

28°F

-2°C

Humidity 88%
Wind Speed SW 5 mph
Barometer 29.91 in (1014.1 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 6 Dec 5:56 am EST
Extended Forecast for

Canonsburg PA

  • Today

    Today: Mostly cloudy, with a high near 36. Southwest wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 36 °F

    Mostly Cloudy

  • Tonight

    Tonight: Cloudy, with a low around 27. Southwest wind around 5 mph becoming calm in the evening.

    Low: 27 °F

    Cloudy

  • Sunday

    Sunday: A chance of rain and snow after 1pm. Cloudy, with a high near 38. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 38 °F

    Cloudy then
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: A slight chance of rain and snow before 10pm, then a slight chance of snow between 10pm and 1am. Mostly cloudy, with a low around 19. West wind around 7 mph becoming north after midnight. Chance of precipitation is 20%.

    Low: 19 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Monday

    Monday: Partly sunny, with a high near 28. Northeast wind 6 to 8 mph.

    High: 28 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 13.

    Low: 13 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 36.

    High: 36 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of rain after 1am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.

    Low: 31 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday

    Wednesday: Rain. High near 41. Chance of precipitation is 80%.

    High: 41 °F

    Rain

Detailed Forecast

Today
Mostly cloudy, with a high near 36. Southwest wind 6 to 11 mph, with gusts as high as 21 mph.
Tonight
Cloudy, with a low around 27. Southwest wind around 5 mph becoming calm in the evening.
Sunday
A chance of rain and snow after 1pm. Cloudy, with a high near 38. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 40%. Little or no snow accumulation expected.
Sunday Night
A slight chance of rain and snow before 10pm, then a slight chance of snow between 10pm and 1am. Mostly cloudy, with a low around 19. West wind around 7 mph becoming north after midnight. Chance of precipitation is 20%.
Monday
Partly sunny, with a high near 28. Northeast wind 6 to 8 mph.
Monday Night
Partly cloudy, with a low around 13.
Tuesday
Mostly cloudy, with a high near 36.
Tuesday Night
A chance of rain after 1am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Wednesday
Rain. High near 41. Chance of precipitation is 80%.
Wednesday Night
Rain and snow likely before 1am, then a chance of snow. Cloudy, with a low around 26. Chance of precipitation is 70%.
Thursday
A chance of snow. Mostly cloudy, with a high near 33. Chance of precipitation is 50%.
Thursday Night
Snow likely. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.
Friday
A chance of snow. Mostly cloudy, with a high near 30. 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:
5:26 am EST Dec 6, 2025
Forecast Valid:
6am EST Dec 6, 2025-6pm EST Dec 12, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation