I-66 weather conditions near Washington, District of Columbia
Roadnow AI Agent Live Update
Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Mostly Cloudy 65°F 2025-09-05T03:52:00-04:00 
Today 2025-09-05, Sunny. Sunny, with a high near 89. Light south wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 24 mph.
Tonight 2025-09-05, Mostly Clear. Mostly clear, with a low around 72. South wind around 6 mph.Saturday 2025-09-06, Mostly Sunny then Showers. Showers and possibly a thunderstorm after 2pm. High near 89. South wind 5 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night 2025-09-06, Showers. Showers and possibly a thunderstorm before 2am, then a slight chance of showers. Low around 61. Northwest wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday 2025-09-07, Partly Sunny. Partly sunny, with a high near 75. Northwest wind around 6 mph.- Sunday Night 2025-09-07, Mostly Clear. Mostly clear, with a low around 56.
- Monday 2025-09-08, Sunny. Sunny, with a high near 75.
- Monday Night 2025-09-08, Mostly Clear. Mostly clear, with a low around 55.
- Tuesday 2025-09-09, Sunny. Sunny, with a high near 75.
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 75.
- Wednesday Night 2025-09-10, Partly Cloudy. Partly cloudy, with a low around 59.
Thursday 2025-09-11, Mostly Sunny. Mostly sunny, with a high near 81.