Washington Dulles Airport (IAD) Weather 07/20/2025
This Afternoon
92
Isolated T-storms
Tonight
71
Partly Cloudy
Monday
86
Mostly Sunny
Monday Night
63
Mostly Clear
Tuesday
83
Sunny
Tuesday Night
65
Mostly Clear
Wednesday
85
Mostly Sunny
Wednesday Night
66
Partly Cloudy
Thursday
91
Sunny
Thursday Night
71
Mostly Clear
Friday
97
Hot
Friday Night
75
Partly Cloudy
Saturday
95
Mostly Sunny then Chance T-storms
Weekly Forecast
This Afternoon
Isolated showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 100. West wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 71. Northwest wind 6 to 8 mph.
Monday
Mostly sunny, with a high near 86. North wind around 7 mph.
Monday Night
Mostly clear, with a low around 63. Northeast wind 3 to 5 mph.
Tuesday
Sunny, with a high near 83. Northeast wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Mostly sunny, with a high near 85.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Sunny, with a high near 91.
Thursday Night
Mostly clear, with a low around 71.
Friday
Mostly sunny and hot, with a high near 97.
Friday Night
Partly cloudy, with a low around 75.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 95. Chance of precipitation is 30%.