National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Areas of Showers and Thunderstorms to Start the Work Week

Areas of rain and thunderstorms are forecast Monday across the central and eastern states. Some mixed rain and snow is possible in the high Sierra Mountains. Heavy to excessive rain may bring flooding in the central Appalachians. Read More >

Hazardous Weather Conditions

Current conditions at

Washington County Airport (KAFJ)

Lat: 40.14°NLon: 80.29°WElev: 1184ft.

Overcast

65°F

18°C

Humidity 97%
Wind Speed NE 7 mph
Barometer 30.05 in (1016.8 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 21 Sep 12:56 am EDT
Extended Forecast for

Waynesburg PA

Flood Watch September 21, 01:40am until September 21, 12:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch September 21, 01:40am until September 21, 12:00pm

    NOW until 12:00pm Mon

    Flood Watch

  • Overnight

    Low: 59 °F

    Showers
    Likely and
    Patchy Fog

  • Monday

    Monday: Showers and possibly a thunderstorm. Patchy fog. High near 69. Northeast wind 7 to 9 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 69 °F

    Showers and
    Patchy Fog

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then showers likely. Low around 57. Northeast wind 5 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 57 °F

    Showers

  • Tuesday

    Tuesday: Showers likely. Cloudy, with a high near 68. East wind 6 to 10 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 68 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely, mainly after 8pm. Cloudy, with a low around 53. East wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 53 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely. Mostly cloudy, with a high near 64. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 64 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely, mainly before 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.

    Low: 51 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers before 2pm. Partly sunny, with a high near 64. Chance of precipitation is 30%.

    High: 64 °F

    Chance
    Showers

Detailed Forecast

Overnight
Showers likely, mainly after 3am. Patchy fog. Otherwise, cloudy, with a low around 59. Northeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Showers and possibly a thunderstorm. Patchy fog. High near 69. Northeast wind 7 to 9 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 57. Northeast wind 5 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
Showers likely. Cloudy, with a high near 68. East wind 6 to 10 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Showers likely, mainly after 8pm. Cloudy, with a low around 53. East wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Showers likely. Mostly cloudy, with a high near 64. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Thursday
A chance of showers before 2pm. Partly sunny, with a high near 64. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 69.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Mostly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waynesburg PA
 39.9°N 80.18°W (Elev. 997 ft)
Last Update:
1:36 am EDT Sep 21, 2026
Forecast Valid:
1am EDT Sep 21, 2026-6pm EDT Sep 27, 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