I-66 weather conditions near Fairfax, Virginia

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Mostly Cloudy 75°F 2025-10-19T12:52:00-04:00
• This Afternoon 2025-10-19, Partly Sunny and Breezy. Partly sunny, with a high near 76. Breezy, with a south wind around 21 mph, with gusts as high as 37 mph.
• Tonight 2025-10-19, Showers. Showers and thunderstorms before 4am, then a slight chance of showers between 4am and 5am. Low around 50. South wind 11 to 15 mph becoming west after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
• Monday 2025-10-20, Chance Showers then Sunny. A chance of showers, mainly between 7am and 8am. Partly sunny, then gradually becoming sunny, with a high near 64. West wind 14 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
• Monday Night 2025-10-20, Clear. Clear, with a low around 42. Southwest wind 3 to 6 mph.
• Tuesday 2025-10-21, Sunny. Sunny, with a high near 70. South wind 5 to 11 mph, with gusts as high as 21 mph.
• Tuesday Night 2025-10-21, Slight Chance Showers. A slight chance of showers before 2am. Partly cloudy, with a low around 48. Chance of precipitation is 20%.
• Wednesday 2025-10-22, Sunny. Sunny, with a high near 62.
• Wednesday Night 2025-10-22, Mostly Clear. Mostly clear, with a low around 41.
• Thursday 2025-10-23, Sunny. Sunny, with a high near 61.
• Thursday Night 2025-10-23, Mostly Clear. Mostly clear, with a low around 41.
• Friday 2025-10-24, Sunny. Sunny, with a high near 61.
• Friday Night 2025-10-24, Partly Cloudy. Partly cloudy, with a low around 42.
• Saturday 2025-10-25, Partly Sunny. Partly sunny, with a high near 60.