Severe Thunderstorm and Heavy Rainfall Threat Tonight; Heat Continues on Tuesday Across the Eastern U.S.
Severe weather and flash flooding threats continue across the Central Plains and Midwest into tonight. Very large hail, strong tornadoes and damaging winds are expected. An early season heat wave will continue to challenge temperature records across the eastern U.S. through Wednesday. Read More >
Current conditions at
Washington/Dulles International Airport, DC (KIAD)
Lat: 38.93°NLon: 77.45°WElev: 312ft.
Fair
79°F
26°C
| Humidity | 56% |
| Wind Speed | S 7 mph |
| Barometer | 30.12 in (1019.6 mb) |
| Dewpoint | 62°F (17°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 18 May 11:52 pm EDT |
Extended Forecast for
Catharpin VA
Overnight
Low: 69 °F
Mostly Clear
Tuesday
High: 97 °F
Hot
Tuesday Night
Low: 71 °F
Partly Cloudy
Wednesday
High: 95 °F
Sunny then
ShowersWednesday Night
Low: 57 °F
Showers
Thursday
High: 68 °F
Showers
LikelyThursday Night
Low: 52 °F
Chance
ShowersFriday
High: 66 °F
Showers
LikelyFriday Night
Low: 52 °F
Showers
Detailed Forecast
Overnight
Mostly clear, with a low around 69. Southwest wind around 6 mph.
Tuesday
Sunny and hot, with a high near 97. Light southwest wind increasing to 5 to 9 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 71. Southwest wind 7 to 9 mph, with gusts as high as 18 mph.
Wednesday
Showers and possibly a thunderstorm after 2pm. High near 95. Light southwest wind becoming west 5 to 9 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 57. North wind around 9 mph. Chance of precipitation is 80%.
Thursday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 50%.
Friday
Showers likely. Mostly cloudy, with a high near 66. Chance of precipitation is 70%.
Friday Night
Showers. Low around 52. Chance of precipitation is 80%.
Saturday
Showers likely. Cloudy, with a high near 72. Chance of precipitation is 70%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Sunday
Showers likely. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Catharpin VA
38.85°N 77.55°W (Elev. 233 ft)
38.85°N 77.55°W (Elev. 233 ft)
10:53 pm EDT May 18, 2026
12am EDT May 19, 2026-6pm EDT May 25, 2026
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