I-64 weather conditions near O Fallon, Illinois

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Fair 64°F 2025-06-20T03:53:00-05:00
• Today 2025-06-20, Sunny. Sunny, with a high near 91. Light south wind increasing to 6 to 11 mph in the morning.
• Tonight 2025-06-20, Mostly Clear. Mostly clear, with a low around 75. South wind 9 to 11 mph, with gusts as high as 20 mph.
• Saturday 2025-06-21, Sunny. Sunny, with a high near 96. Heat index values as high as 109. South wind 10 to 14 mph, with gusts as high as 22 mph.
• Saturday Night 2025-06-21, Mostly Clear. Mostly clear, with a low around 76. South wind 7 to 10 mph.
• Sunday 2025-06-22, Sunny. Sunny, with a high near 95. Southwest wind 7 to 10 mph.
• Sunday Night 2025-06-22, Mostly Clear. Mostly clear, with a low around 76.
• Monday 2025-06-23, Sunny. Sunny, with a high near 94.
• Monday Night 2025-06-23, Mostly Clear. Mostly clear, with a low around 76.
• Tuesday 2025-06-24, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms before 1pm. Sunny, with a high near 94.
• Tuesday Night 2025-06-24, Mostly Clear. Mostly clear, with a low around 76.
• Wednesday 2025-06-25, Slight Chance Showers then Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94.
• Wednesday Night 2025-06-25, Partly Cloudy. Partly cloudy, with a low around 75.
• Thursday 2025-06-26, Sunny then Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.