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

46°F

8°C

Humidity 86%
Wind Speed W 9 G 18 mph
Barometer 29.86 in (1011.9 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 26 Dec 11:56 pm EST
Extended Forecast for

Canonsburg PA

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, cloudy, with a low around 36. Northwest wind 5 to 8 mph.

    Low: 36 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 41. Light and variable wind.

    High: 41 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain. High near 60. Light southeast wind becoming south 5 to 10 mph in the morning. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 60 °F

    Rain

  • Sunday Night

    Sunday Night: Rain. Low around 49. Breezy, with a south wind 10 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Rain Likely
    then Rain and
    Breezy

  • Monday

    Monday: Rain likely, possibly mixed with snow before 4pm, then a chance of snow. Mostly cloudy, with a high near 53. Breezy. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 53 °F

    Rain/Snow
    Likely and
    Breezy

  • Monday Night

    Monday Night: Snow. Low around 21. Breezy. Chance of precipitation is 80%.

    Low: 21 °F

    Snow and
    Breezy

  • Tuesday

    Tuesday: A chance of snow before 1pm. Mostly cloudy, with a high near 28. Breezy. Chance of precipitation is 30%.

    High: 28 °F

    Chance Snow
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, cloudy, with a low around 36. Northwest wind 5 to 8 mph.
Saturday
Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 41. Light and variable wind.
Saturday Night
Mostly cloudy, with a low around 31. Calm wind.
Sunday
Rain. High near 60. Light southeast wind becoming south 5 to 10 mph in the morning. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Rain. Low around 49. Breezy, with a south wind 10 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain likely, possibly mixed with snow before 4pm, then a chance of snow. Mostly cloudy, with a high near 53. Breezy. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Snow. Low around 21. Breezy. Chance of precipitation is 80%.
Tuesday
A chance of snow before 1pm. Mostly cloudy, with a high near 28. Breezy. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 20.
Wednesday
A chance of snow. Mostly cloudy, with a high near 33. Chance of precipitation is 40%.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 21. Chance of precipitation is 50%.
New Year's Day
A chance of snow. Mostly cloudy, with a high near 28. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 11.
Friday
Mostly sunny, with a high near 23.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Canonsburg PA
 40.25°N 80.18°W (Elev. 997 ft)
Last Update:
11:58 pm EST Dec 26, 2025
Forecast Valid:
12am EST Dec 27, 2025-6pm EST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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