St. Louis, Missouri – Scattered thunderstorms are expected to return to the St. Louis metro by early Saturday afternoon, threatening travel delays, power flickers, and 94°F heat across eastern Missouri and southwest Illinois.
According to the National Weather Service in St. Louis, storms could develop after 2 p.m. Saturday and continue through the early evening, with the strongest cells likely near the I-55 and I-70 corridors. Residents in St. Louis, St. Charles, and Jefferson counties in Missouri — along with Madison and St. Clair counties in Illinois — should brace for gusty winds, torrential rain, and brief street flooding.
Saturday will bring intense summer heat, with heat index values nearing 100°F across the bi-state area. Cloud cover will increase through the morning, with the risk of lightning and downpours peaking by late afternoon.
Drivers are urged to avoid flooded roads and delay non-essential travel during the storm window. Those planning weekend outdoor events should monitor updates closely and keep devices charged in case of power outages.
Storm chances return Sunday evening and again Monday night, setting up an unsettled start to the final days of June. Independence Day Eve, Tuesday, offers brief relief with dry and sunny skies — before more rain chances return by July 2.
🗓️ 5-Day Forecast for St. Louis Metro | June 28 – July 2
- Saturday: High 94°F – Scattered PM storms, hot and humid
- Sunday: High 91°F – Evening storms likely
- Monday: High 90°F – Thunderstorms likely at night
- Tuesday (July 2 Eve): High 89°F – Mostly sunny, drier
- Wednesday (July 2): High 92°F – PM storm chances return
