St. Louis is waking up to a clear but sticky Saturday morning on May 30, 2026, with temperatures near 66°F and dew points in the mid-60s, so the air already feels plenty humid. Skies should stay partly sunny today with a high near 85°F and a 30–40% chance of scattered showers and thunderstorms, mainly later in the afternoon.
Meteorologists with the National Weather Service are calling for several rounds of showers and scattered thunderstorms through Monday, with the most widespread activity expected late Sunday night into Monday morning (the night of May 31 into June 1, 2026), according to NWS St. Louis. High temperatures through early next week will mostly stay in the 80s, and Monday is currently projected to be the warmest day of the stretch.
Afternoon Storm Risk
Storm coverage is expected to increase this afternoon on May 30. Most storms will be brief, but any thunderstorm can drop a quick, heavy downpour that cuts visibility and causes ponding on poorly drained streets. A few stronger cells could bring gusty outflow winds and small hail, so drivers should plan on slower travel while storms move through. If you have outdoor plans later today, keep a dry backup option ready to go.
Tonight Into Monday
Rain chances dip a bit this evening, but storms developing over western Missouri and eastern Kansas are expected to track east and redevelop overnight, which will boost rain chances Sunday night, May 31, and into Monday morning, June 1, 2026. Showers and thunderstorms are likely Sunday night into Monday, with roughly a 60–70% chance of rain during that window and the highest coverage late Sunday night. Locally heavy rainfall could trigger brief flooding in low-lying spots, so it is a good idea to allow extra time for the Monday morning commute and keep an eye on transit updates at Metro Transit.
Fog And Commute Tips
Patchy low clouds and localized fog this morning may briefly cut visibility for early commuters, especially near river valleys and in lower-lying neighborhoods. Keeping an umbrella handy, easing off the gas on wet roads, and steering clear of standing water can help you ride out the unsettled pattern. If storms intensify in your area, move indoors and wait for them to pass. For the latest radar imagery and more precise timing, check the forecast from the National Weather Service and be ready to shuffle outdoor plans on short notice.
