I-64 weather conditions near O Fallon, Illinois

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Fair 82°F 2025-06-18T08:53:00-05:00
• Today 2025-06-18, Chance T-storms. A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86. Southwest wind 13 to 17 mph, with gusts as high as 25 mph.
• Tonight 2025-06-18, Chance T-storms then Slight Chance Showers. A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Mostly cloudy, with a low around 68. Southwest wind 7 to 10 mph. Chance of precipitation is 50%.
• Juneteenth 2025-06-19, Sunny. Sunny, with a high near 85. Northwest wind around 8 mph.
• Thursday Night 2025-06-19, Mostly Clear. Mostly clear, with a low around 67. Calm wind.
• Friday 2025-06-20, Sunny. Sunny, with a high near 90. Calm wind becoming south 5 to 9 mph in the morning.
• Friday Night 2025-06-20, Mostly Clear. Mostly clear, with a low around 74.
• Saturday 2025-06-21, Sunny. Sunny, with a high near 94.
• Saturday Night 2025-06-21, Mostly Clear. Mostly clear, with a low around 77.
• Sunday 2025-06-22, Sunny. Sunny, with a high near 95.
• 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 75.
• Tuesday 2025-06-24, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.