I-66 weather conditions near Washington, District of Columbia

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Overcast 67°F 2025-09-09T23:52:00-04:00
• Overnight 2025-09-10, Slight Chance Showers. A slight chance of showers after 3am. Mostly cloudy, with a low around 60. Northeast wind around 7 mph. Chance of precipitation is 20%.
• Wednesday 2025-09-10, Chance Showers. A chance of showers, mainly before 9am. Mostly cloudy, with a high near 72. North wind around 9 mph. Chance of precipitation is 30%.
• Wednesday Night 2025-09-10, Partly Cloudy. Partly cloudy, with a low around 59. North wind around 5 mph becoming calm in the evening.
• Thursday 2025-09-11, Mostly Sunny. Mostly sunny, with a high near 81. North wind around 6 mph.
• Thursday Night 2025-09-11, Mostly Clear. Mostly clear, with a low around 59. Light north wind.
• Friday 2025-09-12, Sunny. Sunny, with a high near 81.
• Friday Night 2025-09-12, Mostly Clear. Mostly clear, with a low around 60.
• Saturday 2025-09-13, Mostly Sunny. Mostly sunny, with a high near 81.
• Saturday Night 2025-09-13, Partly Cloudy. Partly cloudy, with a low around 61.
• Sunday 2025-09-14, Mostly Sunny. Mostly sunny, with a high near 84.
• Sunday Night 2025-09-14, Partly Cloudy. Partly cloudy, with a low around 63.
• Monday 2025-09-15, Mostly Sunny. Mostly sunny, with a high near 82.
• Monday Night 2025-09-15, Mostly Clear. Mostly clear, with a low around 60.
• Tuesday 2025-09-16, Mostly Sunny. Mostly sunny, with a high near 80.