I-66 weather conditions near Fairfax, Virginia

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Fair 47°F 2025-10-17T21:52:00-04:00
• Tonight 2025-10-17, Mostly Clear. Mostly clear, with a low around 42. Calm wind.
• Saturday 2025-10-18, Decreasing Clouds. Mostly cloudy, then gradually becoming sunny, with a high near 71. Calm wind becoming south 5 to 8 mph in the afternoon.
• Saturday Night 2025-10-18, Mostly Clear. Mostly clear, with a low around 55. South wind around 7 mph.
• Sunday 2025-10-19, Mostly Sunny then Chance Showers. A chance of showers after 2pm. Partly sunny, with a high near 76. South wind 9 to 17 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.
• Sunday Night 2025-10-19, Showers Likely. Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 51. Southwest wind 10 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
• Monday 2025-10-20, Chance Showers then Sunny. A chance of showers before 8am. Mostly sunny, with a high near 65. Chance of precipitation is 30%.
• Monday Night 2025-10-20, Mostly Clear. Mostly clear, with a low around 45.
• Tuesday 2025-10-21, Sunny. Sunny, with a high near 70.
• Tuesday Night 2025-10-21, Partly Cloudy. Partly cloudy, with a low around 46.
• Wednesday 2025-10-22, Sunny. Sunny, with a high near 60.
• Wednesday Night 2025-10-22, Mostly Clear. Mostly clear, with a low around 43.
• Thursday 2025-10-23, Mostly Sunny. Mostly sunny, with a high near 63.
• Thursday Night 2025-10-23, Partly Cloudy. Partly cloudy, with a low around 47.
• Friday 2025-10-24, Mostly Sunny. Mostly sunny, with a high near 63.