A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. Although the temperature rarely threatened climatological records, the humidity caused the heat index to reach extreme levels. The combination of heat and humidity led to several heat related illnesses across the region.

Excessive Heat in COLE, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: ASOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values at the Jefferson City ASOS reaching as high as 117.

Excessive Heat in CRAWFORD, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values at the nearby Sullivan Airport reaching as high as 117.

Excessive Heat in IRON, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 110 to 120 as observed at numerous reporting sites in the region.

Excessive Heat in JEFFERSON, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: ASOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 110 to 120 as observed at numerous reporting sites in the region.

Excessive Heat in KNOX, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 110 to 115 as observed at numerous reporting sites in the region.

Excessive Heat in LEWIS, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 110 to 115 as observed at numerous reporting sites in the region.

Excessive Heat in MADISON, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 110 to 120 as observed at numerous reporting sites in the region.

Excessive Heat in MONROE, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 110 to 120 as observed at numerous reporting sites in the region.

Excessive Heat in REYNOLDS, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 110 to 120 as observed at numerous reporting sites in the region.

Excessive Heat in MARION, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 110 to 120 as observed at numerous reporting sites in the region.

Excessive Heat in MONITEAU, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 110 to 120 as observed at numerous reporting sites in the region.

Excessive Heat in MONTGOMERY, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 115 to 120 as observed at numerous reporting sites in the region.

Excessive Heat in OSAGE, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 115 to 120 as observed at numerous reporting sites in the region.

Excessive Heat in PIKE, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 115 to 120 as observed at numerous reporting sites in the region.

Excessive Heat in RALLS, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 110 to 115 as observed at numerous reporting sites in the region.

Excessive Heat in SHELBY, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 110 to 115 as observed at numerous reporting sites in the region.

Excessive Heat in WARREN, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: ASOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 115 to 120 as observed at numerous reporting sites in the region.

Excessive Heat in ST. FRANCOIS, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: ASOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 110 to 120 as observed at numerous reporting sites in the region.

Excessive Heat in WASHINGTON, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: ASOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 110 to 120 as observed at numerous reporting sites in the region.

Excessive Heat in GASCONADE, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 115 to 120 as observed at numerous reporting sites in the region.

Excessive Heat in LINCOLN, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 115 to 120 as observed at numerous reporting sites in the region.

Excessive Heat in AUDRAIN, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values at the Mexico AWOS reaching as high as 115.

Excessive Heat in CALLAWAY, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: ASOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values at the nearby Columbia ASOS reaching as high as 118.

Excessive Heat in ST. LOUIS, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: ASOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 110 to 120 as observed at numerous reporting sites in the region. The max heat index at the St Louis International Airport was 117 on August 20. A total of 87 people were seen in hospital emergency rooms between St Louis City and County.

Excessive Heat in BOONE, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: ASOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values at the Columbia ASOS reaching as high as 118.

Excessive Heat in FRANKLIN, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: AWOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 115 to 125 as reported by numerous observation sites in the region.

Excessive Heat in ST. CHARLES, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: ASOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 115 to 120 as observed at numerous reporting sites in the region.

Excessive Heat in ST. LOUIS (C), MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: ASOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 110 to 120 as observed at numerous reporting sites in the region. The max heat index at the St Louis International Airport was 117 on August 20. A total of 87 people were seen in hospital emergency rooms between St Louis City and County.

Excessive Heat in STE. GENEVIEVE, MISSOURI
From 20-AUG-23 10:00:00 to 25-AUG-23 20:00:00 (CST-6)
Reported by: ASOS

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 110 to 120 as observed at numerous reporting sites in the region.