06/17/2026
Good morning here is the Latest Weather Forecast for Wednesday, June 17th, 2026.
Forecast for Today: mostly sunny skies, hot humid windy conditions, high 92° heat index 96°.
Forecast for Tonight: partly cloudy to mostly cloudy skies, mild breezy conditions, low 72°.
Alerts: Wind Advisory effective this afternoon through this evening for Jefferson, Madison, St. Francois, and Ste. Genevieve counties.
Weather Details: Very strong gusty southwest winds surges in warmer moist humid air along a warm front on Wednesday. A cool front sweeps through late Wednesday into Thursday with scattered to a line of showers and strong severe thunderstorms, a marginal and slight risk of severe weather main threats heavy rain, dangerous lightning, loud thunder, strong damaging winds, large hail, spin up tornadoes, and flash flooding. Gusty northwest winds usher in cooler less humid air behind the front. Warm and tranquil weather on Juneteenth. A warm front surges in warmer moist humid air on Saturday. The Official First day of Summer is Sunday, June 21st at 3:24am CDT. A cool front sweeps through on Father’s Day into Monday with scattered showers and thunderstorms. Warm and tranquil weather on Tuesday.