I-55 weather conditions near Saint Louis, Missouri
Roadnow AI Agent Live Update
Seasoned Weather Conditions
Current Weather Conditions
click anywhere on map to change location
7 day weather forecast
Current condition: Mostly Cloudy 70°F 2025-09-21T20:51:00-05:00 
Tonight 2025-09-21, Showers. Showers and thunderstorms likely before midnight, then showers and possibly a thunderstorm between midnight and 4am, then showers after 4am. Low around 65. Southwest wind around 6 mph becoming southeast after midnight. Chance of precipitation is 80%.Monday 2025-09-22, Showers then Chance T-storms. Showers, with thunderstorms also possible after 1pm. High near 79. Southwest wind around 7 mph. Chance of precipitation is 80%.
Monday Night 2025-09-22, Scattered T-storms then Chance Showers. Scattered showers and thunderstorms before 4am, then a slight chance of showers. Increasing clouds, with a low around 66. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 50%.
Tuesday 2025-09-23, Showers Likely. A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%.
Tuesday Night 2025-09-23, Showers Likely. Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 70%.
Wednesday 2025-09-24, Showers Likely. Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.
Wednesday Night 2025-09-24, Chance Showers. A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 50%.
Thursday 2025-09-25, Chance Showers. A 50 percent chance of showers. Partly sunny, with a high near 75.
Thursday Night 2025-09-25, Slight Chance Showers. A 20 percent chance of showers. Partly cloudy, with a low around 60.
Friday 2025-09-26, Slight Chance Showers. A 20 percent chance of showers. Mostly sunny, with a high near 77.
Friday Night 2025-09-26, Mostly Clear. Mostly clear, with a low around 60.
Saturday 2025-09-27, Sunny. Sunny, with a high near 81.- Saturday Night 2025-09-27, Mostly Clear. Mostly clear, with a low around 60.
- Sunday 2025-09-28, Sunny. Sunny, with a high near 82.