I-66 weather conditions near Washington, District of Columbia

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Overcast 62°F 2025-09-17T06:52:00-04:00
• Today 2025-09-17, Showers then Chance Showers. Showers, mainly before noon. High near 68. Northeast wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
• Tonight 2025-09-17, Chance Showers and Patchy Fog then Patchy Fog. A chance of showers, mainly before 10pm. Patchy fog between 10pm and 1am. Otherwise, mostly cloudy, with a low around 64. North wind 5 to 8 mph. Chance of precipitation is 40%.
• Thursday 2025-09-18, Decreasing Clouds. Mostly cloudy, then gradually becoming sunny, with a high near 81. Northwest wind around 5 mph.
• Thursday Night 2025-09-18, Mostly Clear. Mostly clear, with a low around 62. Light south wind.
• Friday 2025-09-19, Sunny. Sunny, with a high near 86. Northwest wind around 6 mph.
• Friday Night 2025-09-19, Mostly Clear. Mostly clear, with a low around 61.
• Saturday 2025-09-20, Sunny. Sunny, with a high near 78.
• Saturday Night 2025-09-20, Partly Cloudy. Partly cloudy, with a low around 61.
• Sunday 2025-09-21, Partly Sunny. Partly sunny, with a high near 75.
• 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 78.
• Monday Night 2025-09-22, Partly Cloudy. Partly cloudy, with a low around 62.
• Tuesday 2025-09-23, Mostly Sunny. Mostly sunny, with a high near 82.