Weather
Missouri Weather Alert: 100-105°F Heat Index Hits Monday Through Thursday as Temperatures Reach 99°F
Springfield, Missouri – Heat index values could reach 105 degrees across southwest Missouri be…
By Erin Vale · 2026-09-13T12:56:07.278Z
Springfield, Missouri – Heat index values could reach 105 degrees across southwest Missouri beginning Monday, raising heat related illness concerns for outdoor workers, students and anyone spending extended periods outside through Thursday.
According to the National Weather Service in Springfield, temperatures will remain in the 90s for most of the week, with Monday through Thursday heat index values between 100 and 105 degrees. Monday& 39;s highs range from 92 to 99 degrees, with a 20% to 30% chance of rain.
Tuesday could bring the week& 39;s best opportunity for isolated showers and thunderstorms. Rain chances increase to 30% to 50%, while highs again reach 92 to 99 degrees. Most locations will remain dry despite daily rain opportunities.
Wednesday stays hot, with highs of 93 to 99 degrees and only a 15% to 20% rain chance. Thursday offers little relief as temperatures reach 91 to 97 degrees.
In Springfield and surrounding southwest Missouri communities, residents should limit strenuous outdoor activity during peak afternoon heating, drink water frequently and check on people without reliable air conditioning. Never leave children or pets inside parked vehicles.
The prolonged heat remains the primary concern through Thursday, while isolated rain offers limited relief.
Five Day Outlook for Springfield, Missouri
Sunday: High 83 99°F, low 64 73°F. Rain chance 15 20%. Monday: High 92 99°F, low 69 75°F. Rain chance 20 30%. Tuesday: High 92 99°F, low 68 74°F. Rain chance 30 50%. Wednesday: High 93 99°F, low 69 73°F. Rain chance 15 20%. Thursday: High 91 97°F, low 66 71°F. Rain chance 15 20%.