Excessive Heat in the Interior West; Monsoon Conditions in the Southwest

Dangerous heat is expected to be in place across portions of California, especially the Central Valley, and across the Interior Northwest into Friday. Heat Advisories will also be in place across the southern Plains into the Lower Mississippi River Valley. Monsoonal showers and thunderstorms may result in flash flooding and debris flows from the Four Corners region and Southwest through Friday. Read More >

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Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Overcast

67°F

19°C

Humidity	87%
Wind Speed	N 5 mph
Barometer	29.99 in (1015.3 mb)
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Last update	16 Aug 3:52 am EDT

More Information:

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

Extended Forecast for

2 Miles WSW Great Falls VA

Overnight

Scattered
Showers
Low: 62 °F
Tuesday

Isolated
Showers then
Partly Sunny
High: 80 °F
Tuesday
Night

Partly Cloudy
Low: 61 °F
Wednesday

Sunny then
Slight Chance
T-storms
High: 80 °F
Wednesday
Night

Mostly Clear
Low: 61 °F
Thursday

Sunny then
Slight Chance
T-storms
High: 83 °F
Thursday
Night

Partly Cloudy
Low: 64 °F
Friday

Mostly Sunny
High: 83 °F
Friday
Night

Mostly Cloudy
Low: 66 °F

Detailed Forecast

Overnight

Scattered showers, mainly before 5am. Mostly cloudy, with a low around 62. Light north wind. Chance of precipitation is 30%.

Tuesday

Isolated showers before 11am. Partly sunny, with a high near 80. Northeast wind 3 to 8 mph. Chance of precipitation is 20%.

Tuesday Night

Partly cloudy, with a low around 61. East wind around 5 mph becoming calm after midnight.

Wednesday

A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 80. Northeast wind 3 to 6 mph. Chance of precipitation is 20%.

Wednesday Night

Mostly clear, with a low around 61. Calm wind.

Thursday

A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 83. Chance of precipitation is 20%.

Thursday Night

Partly cloudy, with a low around 64.

Friday

Mostly sunny, with a high near 83.

Friday Night

Mostly cloudy, with a low around 66.

Saturday

A chance of showers after 8am. Mostly cloudy, with a high near 80. Chance of precipitation is 40%.