I-66 weather conditions near Fairfax, Virginia

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Overcast 27°F 2025-12-13T04:55:00-05:00
• Today 2025-12-13, Mostly Cloudy. Mostly cloudy, with a high near 46. Southwest wind 5 to 8 mph.
• Tonight 2025-12-13, Chance Rain/Snow then Rain/Snow. Rain and snow, becoming all snow after 3am. The snow could be heavy at times. Low around 24. Light northwest wind increasing to 5 to 10 mph after midnight. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
• Sunday 2025-12-14, Chance Snow then Mostly Sunny and Blustery. A chance of snow before 7am. Mostly sunny, with a high near 30. Blustery, with a northwest wind 14 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 30%.
• Sunday Night 2025-12-14, Mostly Clear. Mostly clear, with a low around 18. Northwest wind 13 to 16 mph, with gusts as high as 29 mph.
• Monday 2025-12-15, Mostly Sunny. Mostly sunny, with a high near 32. Northwest wind 7 to 11 mph, with gusts as high as 21 mph.
• Monday Night 2025-12-15, Partly Cloudy. Partly cloudy, with a low around 21.
• Tuesday 2025-12-16, Mostly Sunny. Mostly sunny, with a high near 37.
• Tuesday Night 2025-12-16, Partly Cloudy. Partly cloudy, with a low around 26.
• Wednesday 2025-12-17, Mostly Sunny. Mostly sunny, with a high near 48.
• Wednesday Night 2025-12-17, Mostly Cloudy. Mostly cloudy, with a low around 33.
• Thursday 2025-12-18, Partly Sunny. Partly sunny, with a high near 56.
• Thursday Night 2025-12-18, Chance Rain. A chance of rain. Mostly cloudy, with a low around 37. Chance of precipitation is 50%.
• Friday 2025-12-19, Mostly Sunny. Mostly sunny, with a high near 45.