St. Louis woke up under clear skies and about 59°F on Wednesday, April 22, 2026, with highs set to climb into the low 80s by the afternoon. Enjoy the sunshine while it lasts, because a strengthening southerly flow on Thursday is expected to help fuel a likely round of showers and thunderstorms late Thursday night into early Friday.
Afternoon And Thursday
Today stays mostly sunny with a high near 81°F and light southwest winds around 8 mph, which should make for comfortable afternoon plans. Thursday, April 23, is forecast to be a touch warmer, with highs near 83°F and south winds of 6 to 15 mph, and gusts that could reach about 26 mph, according to the National Weather Service Saint Louis.
Late Thursday Night Into Friday: Storms Likely
Showers and thunderstorms are likely late Thursday night into the early hours of Friday, with storms expected after about 1 a.m. Friday, April 24, and lows in the mid-60s. The forecast discussion calls for widespread rain Thursday night through Friday, with the greatest thunderstorm and heavy-rain potential focused just southwest of the metro, and localized amounts of 1.5 to 2.5 inches possible where storms train or persist. See the National Weather Service for timing and details.
Friday Commute And Impacts
Friday looks mostly cloudy with a high near 77°F and a 70–90% chance of showers and thunderstorms at times, so it is worth allowing extra travel time overnight and Friday morning. Brief heavy downpours and gusty winds are possible with stronger storms, so secure outdoor furniture and avoid flooded roads. Keep an eye on overnight alerts and check updated forecasts before heading out.
Weekend And Next Week
Dry conditions are expected Saturday and most of Sunday, with highs in the mid-70s, although another round of showers and thunderstorms may arrive Sunday night into Monday as the next system approaches. Forecast details for that Monday event are still subject to change, so monitor updates over the weekend and plan outdoor activities with a bit of flexibility.
