St. Louis is waking up to clear skies Monday morning, but the quiet start gives way to a dangerous stretch of heat. The city is forecast to reach 99 degrees, with heat index values as high as 103, and the prolonged hot spell is expected to continue through the workweek.
Triple-Digit Heat Takes Over The Workweek
According to the National Weather Service, Tuesday will be the hottest day at 101 degrees, with a heat index near 104. Wednesday and Thursday should reach 100, while Friday eases to 94 with a slight chance of afternoon showers and thunderstorms.
A Heat Advisory is now in effect from noon Monday through 8 p.m. Friday for St. Louis City and surrounding parts of the metro area. That is a substantive escalation from Hoodline's earlier forecast, which outlined the heat but reported no active advisory at the time.
Warm Nights Offer Little Relief
Overnight lows will remain unusually high, reaching 77 Monday night, 79 Tuesday night, 80 Wednesday night and 79 Thursday night. Southerly and southwesterly winds will stay light at roughly 5 to 8 mph, so there will be little breeze to offset the heat.
Rain is unlikely through Thursday, with precipitation chances near zero. A slight storm chance arrives after 1 p.m. Friday and returns Saturday, when the high should reach 94; Sunday looks sunnier and somewhat cooler at 92, with a low around 72 Sunday night.
Heat Safety Is The Main Assignment
The National Weather Service heat alert recommends drinking plenty of fluids, staying in air conditioning or shade, wearing lightweight clothing and moving strenuous activities to the morning or evening. Residents should also check on older neighbors, children and pets, and never leave anyone unattended in a parked vehicle.
St. Louis-area residents seeking cooling-center or energy-assistance information can call the United Way of Greater St. Louis at 800-427-4626, dial 2-1-1 from a landline or contact Cool Down Saint Louis at 314-241-7668. Anyone showing signs of heat stroke should be moved to a cool location and treated as an emergency by calling 911.
