I-64 weather conditions near O Fallon, Illinois

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Light Rain 61°F 2025-10-19T02:53:00-05:00
• Overnight 2025-10-19, Showers Likely. A chance of showers, then showers likely and possibly a thunderstorm after 4am. Cloudy, with a low around 51. Northwest wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
• Sunday 2025-10-19, Breezy. Chance Showers then Sunny. A chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 8am. Cloudy through mid morning, then gradual clearing, with a high near 64. Breezy, with a northwest wind 17 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 30%.
• Sunday Night 2025-10-19, Clear. Clear, with a low around 44. Southwest wind 5 to 8 mph.
• Monday 2025-10-20, Sunny then Sunny and Breezy. Sunny, with a high near 71. Breezy, with a south wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
• Monday Night 2025-10-20, Mostly Clear. Mostly clear, with a low around 51. South wind 10 to 16 mph becoming west after midnight. Winds could gust as high as 24 mph.
• Tuesday 2025-10-21, Sunny then Sunny and Breezy. Sunny, with a high near 65. Breezy.
• Tuesday Night 2025-10-21, Clear. Clear, with a low around 44.
• Wednesday 2025-10-22, Sunny. Sunny, with a high near 64.
• Wednesday Night 2025-10-22, Clear. Clear, with a low around 41.
• Thursday 2025-10-23, Sunny. Sunny, with a high near 66.
• Thursday Night 2025-10-23, Partly Cloudy. Partly cloudy, with a low around 44.
• Friday 2025-10-24, Chance Showers. A 30 percent chance of showers. Partly sunny, with a high near 58.
• Friday Night 2025-10-24, Chance Showers. A 40 percent chance of showers. Mostly cloudy, with a low around 47.
• Saturday 2025-10-25, Chance Showers. A 30 percent chance of showers. Partly sunny, with a high near 60.