Significant Severe Weather, Dangerous Heat and Extremely Critical Fire Weather Conditions Across the Southern U.S.

Tornadoes (some strong), extreme hail, and widespread wind damage are forecast over parts of the central and southern Plains Saturday afternoon through Saturday night. A Moderate Risk (level 4 of 5) for severe storms has been issued. Strong winds and low relative humidity will contribute to extremely critical fire weather Saturday in the Southwest. Dangerous heat continues in South Texas. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Washington/Reagan National Airport, DC (KDCA)

Lat: 38.85°NLon: 77.03°WElev: 13ft.

Thunderstorm

75°F

24°C

Humidity	76%
Wind Speed	SE 5 mph
Barometer	29.86 in (1011.2 mb)
Dewpoint	67°F (19°C)
Visibility	10.00 mi
Last update	25 May 10:52 pm EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Mc Lean VA

Tonight
Low: 66 °F
Scattered
Showers
Sunday
High: 86 °F
Patchy Fog
then
Scattered
T-storms
Sunday Night
Low: 68 °F
Chance
T-storms
Memorial Day
High: 84 °F
Chance
T-storms then
T-storms
Likely
Monday Night
Low: 65 °F
T-storms
Likely
Tuesday
High: 80 °F
Sunny
Tuesday Night
Low: 61 °F
Mostly Clear
Wednesday
High: 76 °F
Mostly Sunny
then Chance
T-storms
Wednesday Night
Low: 56 °F
Chance
T-storms then
Mostly Clear

Detailed Forecast

Tonight

Scattered showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 66. Light southeast wind. Chance of precipitation is 40%.

Sunday

Scattered showers and thunderstorms, mainly after 5pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 86. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 30%.

Sunday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South wind 5 to 8 mph. Chance of precipitation is 50%.

Memorial Day

A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then showers and thunderstorms likely after 5pm. Mostly cloudy, with a high near 84. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Monday Night

Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 65. South wind around 7 mph. Chance of precipitation is 60%.

Tuesday

Sunny, with a high near 80.

Tuesday Night

Mostly clear, with a low around 61.

Wednesday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 76. Chance of precipitation is 30%.

Wednesday Night

A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 56. Chance of precipitation is 30%.

Thursday

Sunny, with a high near 72.