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.

Overcast

28°F

-2°C

Humidity 78%
Wind Speed W 15 G 18 mph
Barometer 30.30 in (1027.4 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 12 Jan 5:56 am EST
Extended Forecast for

Canonsburg PA

  • Today

    Today: Cloudy through mid morning, then gradual clearing, with a high near 38. Southwest wind 11 to 16 mph, with gusts as high as 26 mph.

    High: 38 °F

    Gradual
    Clearing

  • Tonight

    Tonight: Mostly clear, with a low around 28. Southwest wind around 9 mph, with gusts as high as 20 mph.

    Low: 28 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 46. South wind 9 to 15 mph, with gusts as high as 25 mph.

    High: 46 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Rain likely, mainly after 1am. Mostly cloudy, with a low around 38. Southwest wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Chance Rain
    then Rain
    Likely

  • Wednesday

    Wednesday: Rain. High near 43. Southwest wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 43 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and snow, becoming all snow after 1am. Low around 23. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 23 °F

    Rain/Snow

  • Thursday

    Thursday: Snow likely, mainly before 1pm. Mostly cloudy, with a high near 27. Chance of precipitation is 60%.

    High: 27 °F

    Snow Likely

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 14. Chance of precipitation is 30%.

    Low: 14 °F

    Chance Snow

  • Friday

    Friday: A chance of snow after 1pm. Mostly cloudy, with a high near 29. Chance of precipitation is 30%.

    High: 29 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Today
Cloudy through mid morning, then gradual clearing, with a high near 38. Southwest wind 11 to 16 mph, with gusts as high as 26 mph.
Tonight
Mostly clear, with a low around 28. Southwest wind around 9 mph, with gusts as high as 20 mph.
Tuesday
Increasing clouds, with a high near 46. South wind 9 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Rain likely, mainly after 1am. Mostly cloudy, with a low around 38. Southwest wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain. High near 43. Southwest wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain and snow, becoming all snow after 1am. Low around 23. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Snow likely, mainly before 1pm. Mostly cloudy, with a high near 27. Chance of precipitation is 60%.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 14. Chance of precipitation is 30%.
Friday
A chance of snow after 1pm. Mostly cloudy, with a high near 29. Chance of precipitation is 30%.
Friday Night
A chance of snow. Mostly cloudy, with a low around 21. Chance of precipitation is 50%.
Saturday
Snow likely. Mostly cloudy, with a high near 34. Chance of precipitation is 60%.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 15. Chance of precipitation is 40%.
Sunday
A chance of snow. Partly sunny, with a high near 23. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Canonsburg PA
 40.27°N 80.18°W (Elev. 1030 ft)
Last Update:
5:42 am EST Jan 12, 2026
Forecast Valid:
6am EST Jan 12, 2026-6pm EST Jan 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation