I-66 weather conditions near Washington, District of Columbia

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Partly Cloudy 87°F 2025-09-05T14:52:00-04:00
• This Afternoon 2025-09-05, Sunny. Sunny, with a high near 88. Southwest wind around 15 mph, with gusts as high as 24 mph.
• Tonight 2025-09-05, Mostly Clear. Mostly clear, with a low around 71. South wind around 6 mph.
• Saturday 2025-09-06, Mostly Sunny then Showers. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 89. Southwest wind 5 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
• Saturday Night 2025-09-06, Showers. Showers and thunderstorms before 11pm, then showers likely. Low around 61. North wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
• Sunday 2025-09-07, Chance Showers then Mostly Sunny. A chance of showers before 8am. Partly sunny, with a high near 74. Northwest wind around 7 mph. Chance of precipitation is 30%.
• Sunday Night 2025-09-07, Mostly Clear. Mostly clear, with a low around 55.
• Monday 2025-09-08, Sunny. Sunny, with a high near 75.
• Monday Night 2025-09-08, Mostly Clear. Mostly clear, with a low around 54.
• Tuesday 2025-09-09, Sunny. Sunny, with a high near 76.
• Tuesday Night 2025-09-09, Partly Cloudy. Partly cloudy, with a low around 58.
• Wednesday 2025-09-10, Partly Sunny. Partly sunny, with a high near 74.
• Wednesday Night 2025-09-10, Partly Cloudy. Partly cloudy, with a low around 58.
• Thursday 2025-09-11, Sunny. Sunny, with a high near 81.