I-55 weather conditions near Saint Louis, Missouri

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Mostly Cloudy 66°F 2025-09-22T06:53:00-05:00
• Today 2025-09-22, Chance Showers then Slight Chance T-storms. A chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 79. South wind 3 to 7 mph. Chance of precipitation is 40%.
• Tonight 2025-09-22, Partly Cloudy. Partly cloudy, with a low around 66. Light southeast wind.
• Tuesday 2025-09-23, Slight Chance Showers then Showers Likely. A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 81. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%.
• Tuesday Night 2025-09-23, Showers. Showers and possibly a thunderstorm. Low around 67. Light and variable wind. Chance of precipitation is 80%.
• Wednesday 2025-09-24, Showers. Showers likely, then showers and possibly a thunderstorm after 1pm. High near 77. Light and variable wind becoming north 5 to 8 mph in the morning. Chance of precipitation is 80%.
• Wednesday Night 2025-09-24, Chance Showers. A 50 percent chance of showers. Mostly cloudy, with a low around 62.
• Thursday 2025-09-25, Chance Showers. A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 75. Chance of precipitation is 40%.
• Thursday Night 2025-09-25, Slight Chance Showers. A 20 percent chance of showers. Partly cloudy, with a low around 59.
• Friday 2025-09-26, Mostly Sunny then Slight Chance Showers. A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 77.
• Friday Night 2025-09-26, Mostly Clear. Mostly clear, with a low around 59.
• Saturday 2025-09-27, Sunny. Sunny, with a high near 82.
• Saturday Night 2025-09-27, Mostly Clear. Mostly clear, with a low around 60.
• Sunday 2025-09-28, Sunny. Sunny, with a high near 83.