I-55 weather conditions near Saint Louis, Missouri

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Fair 88°F 2025-08-17T09:53:00-05:00
• Today 2025-08-17, Sunny then Scattered T-storms. Scattered showers and thunderstorms, mainly after 2pm. Mostly sunny and hot, with a high near 98. Heat index values as high as 109. Light and variable wind. Chance of precipitation is 40%.
• Tonight 2025-08-17, Chance T-storms then Mostly Clear. A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 76. Light southeast wind.
• Monday 2025-08-18, Sunny then Slight Chance T-storms. A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 98. Heat index values as high as 109. Light southeast wind. Chance of precipitation is 20%.
• Monday Night 2025-08-18, Partly Cloudy. Partly cloudy, with a low around 76. Light south wind.
• Tuesday 2025-08-19, Chance T-storms. A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 96. Calm wind becoming west around 5 mph in the afternoon.
• Tuesday Night 2025-08-19, Chance T-storms then Chance Showers. A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 73.
• Wednesday 2025-08-20, Slight Chance Showers then Slight Chance T-storms. A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 20%.
• Wednesday Night 2025-08-20, Partly Cloudy. Partly cloudy, with a low around 69.
• Thursday 2025-08-21, Mostly Sunny. Mostly sunny, with a high near 86.
• Thursday Night 2025-08-21, Mostly Clear. Mostly clear, with a low around 68.
• Friday 2025-08-22, Sunny. Sunny, with a high near 89.
• Friday Night 2025-08-22, Mostly Clear. Mostly clear, with a low around 69.
• Saturday 2025-08-23, Sunny. Sunny, with a high near 89.