Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Very Heavy Rain, Severe Thunderstorms, and High Flash Flood Risk moves into the Mississippi Valley and Midwest

Thunderstorms, some severe, with very heavy rain have moved into the Mid South and Tennessee Valley today. Flash flooding and severe thunderstorms will be possible from the central Gulf Coast to the Upper Great Lakes. The greatest threat of excessive rains will be in portions of the Lower and Middle Mississippi Valleys. This storm system has a history of producing life threatening flash floods. Read More >

Current conditions at

Washington/Reagan National Airport, DC (KDCA)

Lat: 38.85°NLon: 77.03°WElev: 13ft.

Mostly Cloudy

79°F

26°C

Humidity 67%
Wind Speed S 10 mph
Barometer 30.00 in (1016.0 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 30 Apr 7:52 pm EDT
Extended Forecast for

Mc Lean VA

  • Tonight

    Tonight: Partly cloudy, with a low around 67. South wind around 8 mph.

    Partly Cloudy

    Low: 67 °F

  • Monday

    Monday: A slight chance of showers and thunderstorms after 3pm.  Mostly cloudy, with a high near 81. South wind 11 to 17 mph, with gusts as high as 26 mph.  Chance of precipitation is 20%.

    Mostly Cloudy
    then Slight
    Chance
    T-storms

    High: 81 °F

  • Monday
    Night

    Monday Night: Showers and thunderstorms likely before 3am, then a slight chance of showers.  Cloudy, then gradually becoming partly cloudy, with a low around 61. South wind 11 to 17 mph, with gusts as high as 26 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    T-storms
    Likely then
    Chance
    Showers

    Low: 61 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77. West wind 10 to 17 mph, with gusts as high as 26 mph.

    Mostly Sunny

    High: 77 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 54. West wind 6 to 13 mph, with gusts as high as 20 mph.

    Partly Cloudy

    Low: 54 °F

  • Wednesday

    Wednesday: Sunny, with a high near 69.

    Sunny

    High: 69 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 49.

    Partly Cloudy

    Low: 49 °F

  • Thursday

    Thursday: Rain likely after 9am.  Mostly cloudy, with a high near 65. Chance of precipitation is 60%.

    Rain Likely

    High: 65 °F

  • Thursday
    Night

    Thursday Night: Rain.  Low around 56. Chance of precipitation is 80%.

    Rain

    Low: 56 °F

Detailed Forecast

Tonight
Partly cloudy, with a low around 67. South wind around 8 mph.
Monday
A slight chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 81. South wind 11 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Monday Night
Showers and thunderstorms likely before 3am, then a slight chance of showers. Cloudy, then gradually becoming partly cloudy, with a low around 61. South wind 11 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Mostly sunny, with a high near 77. West wind 10 to 17 mph, with gusts as high as 26 mph.
Tuesday Night
Partly cloudy, with a low around 54. West wind 6 to 13 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 69.
Wednesday Night
Partly cloudy, with a low around 49.
Thursday
Rain likely after 9am. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.
Thursday Night
Rain. Low around 56. Chance of precipitation is 80%.
Friday
Rain. High near 71. Chance of precipitation is 80%.
Friday Night
Rain likely. Mostly cloudy, with a low around 53. Chance of precipitation is 70%.
Saturday
A chance of rain. Partly sunny, with a high near 68. Chance of precipitation is 40%.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 51. Chance of precipitation is 40%.
Sunday
A chance of rain. Mostly sunny, with a high near 67. Chance of precipitation is 40%.
Click Map For Forecast
Point Forecast:
Mc Lean VA
 38.95°N 77.19°W (Elev. 253 ft)
7:27 pm EDT Apr 30, 2017
8pm EDT Apr 30, 2017-6pm EDT May 7, 2017
 
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