Summer Heat In Multiple Spots

A large dome of high pressure is expected to deliver summer heat with humidity in multiple sections of the country to start off the week. Excessive heat warnings and heat advisories are in effect across the south-central Plains, Mid to Lower Mississippi Valley and from the Mid-Atlantic into the Northeast. This includes the cities of New York, Philadelphia, Dallas, Oklahoma City and Kansas City. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Reagan National Airport, DC (KDCA)

Lat: 38.85°NLon: 77.03°WElev: 13ft.

Partly Cloudy

85°F

29°C

Humidity 59%
Wind Speed S 6 mph
Barometer 30.00 in (1016.0 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 18 Aug 9:52 pm EDT
Extended Forecast for

Mc Lean VA

  • Tonight

    Tonight: Isolated showers and thunderstorms before 11pm.  Partly cloudy, with a low around 74. South wind 5 to 7 mph.  Chance of precipitation is 20%.

    Isolated
    T-storms then
    Partly Cloudy

    Low: 74 °F

  • Monday

    Monday: Mostly sunny, with a high near 95. Heat index values as high as 100. Southwest wind 3 to 5 mph.

    Mostly Sunny

    High: 95 °F

  • Monday
    Night

    Monday Night: Isolated showers and thunderstorms before 10pm.  Mostly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Isolated
    T-storms then
    Mostly Cloudy

    Low: 75 °F

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 3pm.  Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 95. Heat index values as high as 103. Light and variable wind.  Chance of precipitation is 40%.

    Patchy Fog
    then Chance
    T-storms

    High: 95 °F

  • Tuesday
    Night

    Tuesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 74. Light south wind.  Chance of precipitation is 40%.

    Chance
    T-storms then
    Chance
    Showers

    Low: 74 °F

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 9am.  Partly sunny, with a high near 93. Chance of precipitation is 40%.

    Chance
    T-storms

    High: 93 °F

  • Wednesday
    Night

    Wednesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 75. Chance of precipitation is 40%.

    Chance
    T-storms then
    Chance
    Showers

    Low: 75 °F

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 9am.  Partly sunny, with a high near 90. Chance of precipitation is 50%.

    Chance
    T-storms

    High: 90 °F

  • Thursday
    Night

    Thursday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 67. Chance of precipitation is 50%.

    Chance
    T-storms then
    Chance
    Showers

    Low: 67 °F

Detailed Forecast

Tonight
Isolated showers and thunderstorms before 11pm. Partly cloudy, with a low around 74. South wind 5 to 7 mph. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 95. Heat index values as high as 100. Southwest wind 3 to 5 mph.
Monday Night
Isolated showers and thunderstorms before 10pm. Mostly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Tuesday
A chance of showers and thunderstorms after 3pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 95. Heat index values as high as 103. Light and variable wind. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Light south wind. Chance of precipitation is 40%.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 9am. Partly sunny, with a high near 93. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Chance of precipitation is 40%.
Thursday
A chance of showers, with thunderstorms also possible after 9am. Partly sunny, with a high near 90. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 50%.
Friday
A chance of showers, with thunderstorms also possible after 9am. Partly sunny, with a high near 84. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
Mostly sunny, with a high near 87.
Click Map For Forecast
Point Forecast:
Mc Lean VA
 38.95°N 77.19°W (Elev. 253 ft)
7:32 pm EDT Aug 18, 2019
10pm EDT Aug 18, 2019-6pm EDT Aug 25, 2019
 
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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