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: Thunderstorm Rain Fog/Mist 66°F 2025-10-18T10:54:00-05:00
Today 2025-10-18, Showers. Showers and possibly a thunderstorm. High near 71. South wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Tonight 2025-10-18, Showers then Chance Showers and Breezy. Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 48. Breezy, with a southwest wind 7 to 12 mph becoming northwest 16 to 21 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 100%.
Sunday 2025-10-19, Becoming Sunny and Breezy. Mostly cloudy through mid morning, then gradual clearing, with a high near 64. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 32 mph.
Sunday Night 2025-10-19, Clear. Clear, with a low around 44. West wind 5 to 7 mph becoming south after midnight.
Monday 2025-10-20, Sunny. Sunny, with a high near 72. South wind 7 to 16 mph, with gusts as high as 29 mph.
Monday Night 2025-10-20, Mostly Clear. Mostly clear, with a low around 48.
Tuesday 2025-10-21, Sunny. Sunny, with a high near 63.
Tuesday Night 2025-10-21, Clear. Clear, with a low around 39.
Wednesday 2025-10-22, Sunny. Sunny, with a high near 65.
Wednesday Night 2025-10-22, Mostly Clear. Mostly clear, with a low around 45.
Thursday 2025-10-23, Mostly Sunny then Slight Chance Showers. A 20 percent chance of showers. Mostly sunny, with a high near 70.
Thursday Night 2025-10-23, Chance Showers. A 40 percent chance of showers. Mostly cloudy, with a low around 48.
Friday 2025-10-24, Chance Showers. A 30 percent chance of showers. Partly sunny, with a high near 67.