Thunderstorms in the North Central U.S.; Dangerous Heat in Texas

There is a severe weather and isolated flooding threat from the Central to Northern Plains tonight into early Thursday. The severe weather threat will progress eastward to the Upper Mississippi Valley/Great Lakes into the Lower Ohio Valley Thursday. Major to extreme heat will continue to impact much of southern Texas into next week, where widespread record-breaking temperatures are possible. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Overcast

64°F

18°C

Humidity	96%
Wind Speed	NE 3 mph
Barometer	29.87 in (1011.2 mb)
Dewpoint	63°F (17°C)
Visibility	8.00 mi
Last update	15 May 2:52 am EDT

More Information:

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

Extended Forecast for

2 Miles ESE Great Falls VA

Flood Warning May 15, 06:38am until May 17, 12:30am

Click here for hazard details and duration

Flood Warning

Overnight
Low: 63 °F
Showers
Likely and
Patchy Fog
Thursday
High: 78 °F
Scattered
Showers and
Patchy Fog
Thursday Night
Low: 65 °F
Chance
T-storms and
Patchy Fog
Friday
High: 87 °F
Chance
T-storms and
Patchy Fog
Friday Night
Low: 67 °F
Chance
T-storms then
Chance
Showers
Saturday
High: 85 °F
Chance
Showers
Saturday Night
Low: 62 °F
Mostly Clear
Sunday
High: 75 °F
Mostly Sunny
Sunday Night
Low: 56 °F
Mostly Clear

Detailed Forecast

Overnight

Showers likely and possibly a thunderstorm before 5am, then scattered showers and thunderstorms after 5am. Patchy fog. Otherwise, cloudy, with a low around 63. Light northeast wind. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday

Scattered showers, with thunderstorms also possible after 5pm. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 78. Light southwest wind. Chance of precipitation is 40%.

Thursday Night

A chance of showers and thunderstorms, mainly after 2am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 40%.

Friday

A chance of showers and thunderstorms. Patchy fog before 8am. Otherwise, partly sunny, with a high near 87. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 50%.

Friday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

Saturday

A chance of showers, with thunderstorms also possible after 11am. Mostly sunny, with a high near 85. Chance of precipitation is 40%.

Saturday Night

Mostly clear, with a low around 62.

Sunday

Mostly sunny, with a high near 75.

Sunday Night

Mostly clear, with a low around 56.

Monday

Sunny, with a high near 74.

Monday Night

Mostly clear, with a low around 51.