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

6°C

43°F

Humidity 86%
Wind Speed Calm
Barometer 1022.9 mb (30.20 in)
Dewpoint 4°C (39°F)
Visibility 16 km
Last update 11 May 7:56 am EDT
Extended Forecast for

Canonsburg PA

  • Today

    Today: Sunny, with a high near 17. Light and variable wind becoming northwest 11 to 16 km/h in the afternoon.

    High: 17 °C

    Sunny

  • Tonight

    Tonight: Widespread frost after 4am. Otherwise, mostly clear, with a low around 2. North wind 6 to 11 km/h becoming light after midnight.

    Low: 2 °C

    Mostly Clear
    then Frost

  • Tuesday

    Tuesday: Widespread frost before 8am. Otherwise, sunny, with a high near 20. Calm wind becoming southwest 5 to 8 km/h in the afternoon.

    High: 20 °C

    Frost then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 2am. Partly cloudy during the early evening, then becoming cloudy, with a low around 12. South wind 5 to 10 km/h increasing to 11 to 16 km/h after midnight. Winds could gust as high as 35 km/h. Chance of precipitation is 50%. New precipitation amounts of less than 1 mm possible.

    Low: 12 °C

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 2pm. High near 20. Southwest wind 24 to 26 km/h, with gusts as high as 45 km/h. Chance of precipitation is 100%. New rainfall amounts between 2.5 and 5 mm possible.

    High: 20 °C

    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 8. Chance of precipitation is 30%. New precipitation amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.

    Low: 8 °C

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 14.

    High: 14 °C

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 6.

    Low: 6 °C

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 21.

    High: 21 °C

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 17. Light and variable wind becoming northwest 11 to 16 km/h in the afternoon.
Tonight
Widespread frost after 4am. Otherwise, mostly clear, with a low around 2. North wind 6 to 11 km/h becoming light after midnight.
Tuesday
Widespread frost before 8am. Otherwise, sunny, with a high near 20. Calm wind becoming southwest 5 to 8 km/h in the afternoon.
Tuesday Night
A chance of showers after 2am. Partly cloudy during the early evening, then becoming cloudy, with a low around 12. South wind 5 to 10 km/h increasing to 11 to 16 km/h after midnight. Winds could gust as high as 35 km/h. Chance of precipitation is 50%. New precipitation amounts of less than 1 mm possible.
Wednesday
Showers, with thunderstorms also possible after 2pm. High near 20. Southwest wind 24 to 26 km/h, with gusts as high as 45 km/h. Chance of precipitation is 100%. New rainfall amounts between 2.5 and 5 mm possible.
Wednesday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 8. Chance of precipitation is 30%. New precipitation amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
Thursday
Partly sunny, with a high near 14.
Thursday Night
Partly cloudy, with a low around 6.
Friday
Mostly sunny, with a high near 21.
Friday Night
Partly cloudy, with a low around 11.
Saturday
Mostly sunny, with a high near 27.
Saturday Night
A chance of showers. Partly cloudy, with a low around 15. Chance of precipitation is 30%.
Sunday
A chance of showers. Mostly sunny, with a high near 29. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Canonsburg PA
 40.25°N 80.18°W (Elev. 997 m)
Last Update:
7:56 am EDT May 11, 2026
Forecast Valid:
8am EDT May 11, 2026-6pm EDT May 17, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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