I-64 weather conditions near O Fallon, Illinois
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: A Few Clouds 87°F 2025-06-17T17:53:00-05:00 
Tonight 2025-06-17, Partly Cloudy. Partly cloudy, with a low around 73. South wind 5 to 7 mph.Wednesday 2025-06-18, Slight Chance T-storms then Heavy Rain. Showers and thunderstorms likely, mainly after 5pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 86. Southwest wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Wednesday Night 2025-06-18, Heavy Rain then Slight Chance Showers. Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 1am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 68. West wind 5 to 10 mph. Chance of precipitation is 60%.
- Juneteenth 2025-06-19, Sunny. Sunny, with a high near 85. Northwest wind around 6 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 88.
- Friday Night 2025-06-20, Mostly Clear. Mostly clear, with a low around 73.
- Saturday 2025-06-21, Sunny. Sunny, with a high near 94.
- Saturday Night 2025-06-21, Mostly Clear. Mostly clear, with a low around 76.
- Sunday 2025-06-22, Sunny. Sunny, with a high near 94.
- 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 92.