St. Louis, Missouri – Missouri’s summer weather alert begins in earnest Monday afternoon as thunderstorms return to the St. Louis area with potentially strong winds and localized flooding expected along major corridors including I-70 and I-55.
According to the National Weather Service in St. Louis, scattered thunderstorms will redevelop Monday afternoon with rain chances increasing to 40% by evening. Gusty winds and heavy downpours could make travel hazardous from Columbia to Belleville. Spotter activation is not currently expected, but officials urge caution for those commuting along interstates or working outdoors.
By Monday night, storms could become more widespread, especially across central and northeast Missouri into southwest Illinois. Storm activity is likely to persist daily through Friday, with the highest risks occurring during afternoon and evening hours.
In Franklin, Jefferson, and Madison counties, residents should prepare for brief flooding on poorly drained roads. Keep phones charged and avoid travel during periods of heavy rainfall. While no severe weather is forecast, fast-developing storms may still cause isolated damage.
Five-Day Forecast: Monday, July 7 – Friday, July 11
- Monday: High 90°F, scattered storms likely after 4 p.m., light winds
- Tuesday: High 92°F, slight chance of afternoon storms, muggy and hot
- Wednesday: High 90°F, 40% chance of afternoon showers and thunderstorms
- Thursday: High 91°F, 30% chance of scattered storms after 1 p.m.
- Friday: High 92°F, 60% chance of thunderstorms, especially after noon
Residents across the metro area should expect storm chances to taper slightly by Saturday. Until then, stay weather-aware and plan for daily rain interruptions.
