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

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Reagan National Airport, DC (KDCA)

Lat: 38.85°NLon: 77.03°WElev: 13ft.

Overcast

70°F

21°C

Humidity 71%
Wind Speed S 8 mph
Barometer 29.79 in (1008.9 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 17 Jun 1:52 am EDT
Extended Forecast for

McLean VA

  • Overnight

    Overnight: Isolated showers. Mostly cloudy, with a low around 64. Light south wind. Chance of precipitation is 20%.

    Low: 64 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 87. Southwest wind 3 to 8 mph.

    High: 87 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 72. South wind 6 to 10 mph, with gusts as high as 21 mph.

    Low: 72 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers before 4pm, then a slight chance of showers and thunderstorms between 4pm and 5pm. Mostly sunny, with a high near 93. Southwest wind around 16 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    High: 93 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 69. Northwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 69 °F

    Partly Cloudy
    then Chance
    Showers

  • Juneteenth

    Juneteenth: A chance of showers before 8am. Mostly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    Showers then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Overnight
Isolated showers. Mostly cloudy, with a low around 64. Light south wind. Chance of precipitation is 20%.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 87. Southwest wind 3 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 72. South wind 6 to 10 mph, with gusts as high as 21 mph.
Thursday
A slight chance of showers before 4pm, then a slight chance of showers and thunderstorms between 4pm and 5pm. Mostly sunny, with a high near 93. Southwest wind around 16 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers and thunderstorms before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 69. Northwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Juneteenth
A chance of showers before 8am. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Friday Night
Mostly clear, with a low around 64.
Saturday
Sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 64.
Sunday
Mostly sunny, with a high near 87.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 86. Chance of precipitation is 70%.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
McLean VA
 38.93°N 77.19°W (Elev. 299 ft)
Last Update:
1:35 am EDT Jun 17, 2026
Forecast Valid:
2am EDT Jun 17, 2026-6pm EDT Jun 23, 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