Tonight: Low 74. Showers end. Partly cloudy.
Excessive Heat Warning for most of the St. Louis area from 1 PM Wednesday to 8 PM Saturday. Heat index readings will range from 105 to 113. A Heat Advisory is in effect for Iron and Reynolds Counties in Missouri for slightly lower heat index readings from 100 to 107.
Wednesday: High 94. Hot with oppressive humidity. Heat index from 100 to 105. Can't rule out a spot storm late afternoon and evening.