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: Light Rain 67°F 2025-09-16T14:52:00-04:00 
This Afternoon 2025-09-16, Showers Likely. Showers likely and possibly a thunderstorm. Cloudy, with a high near 70. Northeast wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight 2025-09-16, Showers Likely. Showers and thunderstorms likely before midnight, then showers likely and possibly a thunderstorm between midnight and 3am, then a chance of showers and thunderstorms after 3am. Cloudy, with a low around 61. Northeast wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.- Wednesday 2025-09-17, Showers Likely. Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Cloudy, with a high near 71. Northeast wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night 2025-09-17, Chance Showers. A chance of showers before 2am. Cloudy, with a low around 63. North wind 5 to 7 mph. Chance of precipitation is 30%.
Thursday 2025-09-18, Partly Sunny. Partly sunny, with a high near 80. North wind around 6 mph.
Thursday Night 2025-09-18, Mostly Clear. Mostly clear, with a low around 62.
Friday 2025-09-19, Sunny. Sunny, with a high near 85.- Friday Night 2025-09-19, Mostly Clear. Mostly clear, with a low around 62.
- Saturday 2025-09-20, Sunny. Sunny, with a high near 79.
Saturday Night 2025-09-20, Partly Cloudy. Partly cloudy, with a low around 60.- Sunday 2025-09-21, Partly Sunny. Partly sunny, with a high near 77.
- Sunday Night 2025-09-21, Partly Cloudy. Partly cloudy, with a low around 60.
- Monday 2025-09-22, Partly Sunny. Partly sunny, with a high near 79.
- Monday Night 2025-09-22, Partly Cloudy. Partly cloudy, with a low around 64.
Tuesday 2025-09-23, Mostly Sunny. Mostly sunny, with a high near 82.