St. Louis woke up Sunday, May 17, to clear, muggy skies and mid-60s temperatures, and the afternoon is looking a lot steamier. Highs are expected near 91°F while a strong southerly breeze will make it feel even warmer and could gust close to 30 mph. That heat will be short-lived for some, as a slow-moving front is expected to return showers and thunderstorms Monday, May 18 into Tuesday, May 19.
Afternoon Heat and Gusty South Winds
Mostly sunny skies are forecast with a high near 91°F. South winds will generally be 7-17 mph with gusts as high as 28-30 mph, which can blow around lightweight objects and make driving higher-profile vehicles tricky. If you have outdoor plans, it is a better bet to schedule activity for morning or evening and secure patio furniture and canopies. This forecast comes from the National Weather Service.
What It Means for Your Afternoon
Gusty south winds may kick up dust and make bicycle and motorcycle travel less comfortable this afternoon, and shaded areas will be limited under mostly sunny skies. Stay hydrated, check on neighbors and pets, and avoid strenuous outdoor work during the hottest hours. Keep an eye on local traffic alerts if you are heading over bridges or ramps where crosswinds can be stronger.
Storm Threat Builds Monday Night Into Tuesday (May 18-19)
Showers and thunderstorms become more likely Monday, May 18, with a greater chance for widespread storms Monday night into Tuesday, May 19, as a slow-moving cold front moves through the region. The National Weather Service warns that some storms could produce large hail, damaging straight-line winds and isolated tornadoes during the period of stronger storms. If you have events Monday night or plans Tuesday morning, monitor forecasts and be prepared to move indoors if severe weather watches are issued.
Where to Find Help if You Need It
If the heat becomes a problem, or if storms knock out power, the City of St. Louis maintains a list of cooling centers and other heat resources. Residents can also call 2-1-1 for assistance locating nearby help. Check local library branches and community centers for daytime relief and bring pets indoors during the hottest hours. See the City of St. Louis for locations and hours.
Bottom Line
Today will be hot and blustery, with highs near 91°F and gusts near 30 mph. The real weather shift comes Monday night into Tuesday when storms, some potentially severe, are likely. Sign up for local alerts and check the forecast before heading out. The outlook will be updated if any watches or warnings are issued.
