St. Louis rolled out of bed to crisp low‑60s this morning, but the pleasant spell has a short shelf life. Scattered showers are on deck for this afternoon and tonight, followed by a fast warm‑up Sunday that leads straight into an Extreme Heat Watch early next week. If you have outdoor plans, be ready for brief heavy downpours today and try to dodge the peak afternoon heat Sunday through Tuesday.
Showers First, Extreme Heat Right Behind
Rain showers are expected to develop after 11 a.m., with mostly cloudy skies and a high near 80°F as light southeast winds hold steady. A few weak thunderstorms could pop up, and some spots may see locally heavy rain; forecasters mention isolated 1–3+ inch totals mainly along and south of I‑70, though they do not expect widespread flooding at this point.
An Extreme Heat Watch is in place from Sunday morning, July 26, through Tuesday evening, July 28. Afternoon highs are forecast to climb into the mid‑to‑upper 90s, with heat index values that could reach 105–110°F, according to the National Weather Service.
Plan Ahead: Cooling Centers And Safety Tips
The city is urging residents to treat this as a plan‑ahead weekend. Public libraries and community centers will serve as cooling locations, and callers can dial 2‑1‑1 for the latest list of open sites. Basic precautions still do the heavy lifting here: drink plenty of water, skip strenuous outdoor work during the hottest afternoon hours, and check in on seniors and vulnerable neighbors.
Older adults or anyone needing help with air conditioners can tap into local programs that provide units and installation assistance, according to the City of St. Louis.
Timing And Events
Saturday is expected to be warmer but mostly dry, with a high near 88°F and an overnight low around 73°F. Showers are most likely from this morning through early Saturday, so event planners may want to front‑load outdoor activities into the morning or keep an indoor backup ready for the afternoon.
Forecasters say the pattern flips quickly into the hotter setup by Sunday, so anyone with weekend or early‑week events should keep an eye on updates from the National Weather Service.
This update follows our look at the metro’s recent heat; we will add more coverage if watches or warnings change over the weekend.
