St. Louis, Missouri – Temperatures have dropped as much as 30 degrees across eastern Missouri this morning, giving residents a brief cooldown before a rapid warmup pushes highs near 90°F by Thursday and sets the stage for evening thunderstorms that could impact the commute.
According to the National Weather Service in St. Louis, highs will rebound quickly after Monday’s cooler conditions, climbing from the upper 50s and 60s into the upper 70s Wednesday and reaching 85 to 90 degrees Thursday. Storm chances increase after 5 p.m. Thursday, with a 50 to 60 percent chance of showers and thunderstorms continuing into early Friday.
Communities along the I-70 and I-44 corridors, including St. Louis, St. Charles, and Jefferson City, should prepare for changing road conditions late Thursday. Brief heavy rain could reduce visibility, while lightning may delay outdoor activities and evening events. Utility providers are also monitoring for isolated outages if storms intensify.
Residents should secure loose outdoor items and plan travel around the Thursday evening window. Charging devices ahead of storms is recommended in case of power disruptions.
Cooler air returns by Friday morning, with temperatures falling back into the 50s and additional scattered showers possible. More updates or advisories may be issued as storm timing becomes clearer.
Five Day Forecast for St. Louis, Missouri
Monday: 50–60°F, partly cloudy
Tuesday: 60–65°F, partly cloudy
Wednesday: 70–80°F, partly cloudy
Thursday: 85–90°F, 50–60% chance of evening storms
Friday: 50–60°F, 20–50% chance of morning showers
