I-70 weather conditions near O Fallon, Missouri
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Light Rain Fog/Mist 68°F 2025-09-24T00:54:00-05:00 
Overnight 2025-09-24, Chance Showers and Patchy Fog. A 30 percent chance of showers. Patchy fog. Otherwise, cloudy, with a low around 65. Northeast wind around 6 mph.Wednesday 2025-09-24, Slight Chance Showers and Patchy Fog then Chance T-storms. A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Patchy fog before 10am. Otherwise, cloudy, with a high near 72. North wind 7 to 9 mph. Chance of precipitation is 40%.
Wednesday Night 2025-09-24, Chance Showers. A 40 percent chance of showers, mainly before 4am. Cloudy, then gradually becoming partly cloudy, with a low around 59. North wind around 6 mph.Thursday 2025-09-25, Slight Chance Showers then Sunny. A 20 percent chance of showers before 10am. Mostly sunny, with a high near 76. North wind 6 to 8 mph.
Thursday Night 2025-09-25, Mostly Clear. Mostly clear, with a low around 55. Northwest wind around 5 mph becoming calm in the evening.
Friday 2025-09-26, Sunny. Sunny, with a high near 81.
Friday Night 2025-09-26, Clear. Clear, with a low around 56.- Saturday 2025-09-27, Sunny. Sunny, with a high near 84.
- Saturday Night 2025-09-27, Clear. Clear, with a low around 57.
- Sunday 2025-09-28, Sunny. Sunny, with a high near 85.
- Sunday Night 2025-09-28, Mostly Clear. Mostly clear, with a low around 59.
Monday 2025-09-29, Sunny. Sunny, with a high near 85.
Monday Night 2025-09-29, Partly Cloudy. Partly cloudy, with a low around 61.
Tuesday 2025-09-30, Mostly Sunny. Mostly sunny, with a high near 84.