St. Louis, MO – A turbulent weather pattern could disrupt the work week across the St. Louis metropolitan area, beginning with scattered thunderstorms developing Monday afternoon. Residents should prepare for shifting conditions, especially during commute times, as the region faces multiple chances for storms before a significant pattern change arrives for the Juneteenth holiday. The most immediate activity may impact travel between 2 p.m. and 5 p.m. Monday.
According to the National Weather Service, the threat of showers and thunderstorms will linger through the middle of the week. After Monday’s initial round, Tuesday brings a 20 percent chance of storms after 1 p.m. as temperatures climb to a summer-like 92 degrees. The probability increases significantly by Wednesday, with a 60 percent chance for showers and thunderstorms, mainly after 1 p.m., potentially bringing heavier downpours to the area.
This unsettled pattern will affect communities on both sides of the Mississippi River, from St. Louis County to the Metro East. Drivers should remain alert for sudden changes in visibility and slick road conditions during any storm cell. Residents are advised to secure outdoor objects and have a reliable method for receiving weather alerts, as lightning will be a primary concern with any thunderstorm that forms.
A welcome reprieve is expected for the Juneteenth holiday on Thursday, which promises mostly sunny skies and a pleasant high near 87°F. However, the calm will be short-lived as temperatures soar heading into the weekend. Friday is expected to be mostly clear with a high of 96°F, followed by a hot and sunny Saturday with a high of 97°F, signaling the arrival of early summer heat. Warnings for the stormy conditions remain in effect through mid-week.
Here is a look at the five-day forecast:
- Tuesday: Mostly sunny with a 20% chance of storms after 1 p.m. High near 92°F.
- Wednesday: Showers and thunderstorms likely, mainly after 1 p.m. High near 89°F.
- Juneteenth: Mostly sunny and clear. High near 87°F.
- Friday: Mostly clear and getting hotter. High near 96°F.
- Saturday: Sunny and hot. High near 97°F.
