Areas of Dangerous Heat and Heavy Rain with Possible Flooding This Week

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley through this week. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Fair

59°F

15°C

Humidity	93%
Wind Speed	Calm
Barometer	30.32 in (1026.6 mb)
Dewpoint	57°F (14°C)
Visibility	10.00 mi
Last update	16 Sep 3:52 am EDT

More Information:

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

Extended Forecast for

Great Falls VA

Overnight
Low: 59 °F
Mostly Clear
Wednesday
High: 85 °F
Sunny
Wednesday Night
Low: 65 °F
Partly Cloudy
Thursday
High: 88 °F
Slight Chance
Showers then
Mostly Sunny
Thursday Night
Low: 70 °F
Chance
T-storms then
Chance
Showers
Friday
High: 83 °F
Partly Sunny
Friday Night
Low: 61 °F
Partly Cloudy
Saturday
High: 80 °F
Mostly Sunny
Saturday Night
Low: 64 °F
Mostly Cloudy

Detailed Forecast

Overnight

Mostly clear, with a low around 59. Light south wind.

Wednesday

Sunny, with a high near 85. South wind 3 to 6 mph.

Wednesday Night

Partly cloudy, with a low around 65. South wind 3 to 6 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 88. South wind 3 to 6 mph. Chance of precipitation is 20%.

Thursday Night

A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 70. Light and variable wind. Chance of precipitation is 40%.

Friday

Partly sunny, with a high near 83.

Friday Night

Partly cloudy, with a low around 61.

Saturday

Mostly sunny, with a high near 80.

Saturday Night

Mostly cloudy, with a low around 64.

Sunday

A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.

Sunday Night

Showers and thunderstorms likely. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.