Dangerous Heat Expands; Heavy Rainfall Threats; Fire Weather Concerns for the West

The heat will increase and expand across the Central Plains, Mississippi Valley, Southeast and into the Eastern U.S. through the week as high pressure builds across the eastern two-thirds of the country. On the northern periphery of this heat, the threat for severe thunderstorms and heavy rainfall across the northern Plains and upper Midwest through Tuesday. Critical Fire Weather for the west. Read More >

Disclaimer: Sampled values on map may not reflect actual readings. These can be found in the table below the map.

12 Hour Minimum Temperature Archive For The Past Week.
Latest	Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday

12 hour low temperature reports (ending at 7 am CDT and 6 am CST),
for eastern Iowa, northwest and west central Illinois,
and northeast Missouri. Reported Monday July 21, 2025.

....IOWA....
Oskaloosa AWOS                     73
Pella AWOS                         71
Ottumwa ASOS                       71
Grinnell AWOS                      69
Marshalltown ASOS                  68
Waterloo ASOS                      66
Mason City ASOS                    66
Oelwein AWOS                       63
....ILLINOIS....
Decatur Airport                    74
Quincy Arpt                        72
Peoria Arpt                        71
Jacksonville Arpt                  71
Bloomington Airport                69
Rockford Arpt                      68
Joliet Arpt                        65
Rochelle Arpt                      61
....MISSOURI....
Chillicothe Arpt                   78
Kirksville Arpt                    72
Columbia Arpt                      68
....WISCONSIN....
Prairie du Chien AWOS              63
Madison Arpt                       58
Janesville Arpt                    57
Watertown-Arpt                     55

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Dangerous Heat Expands; Heavy Rainfall Threats; Fire Weather Concerns for the West

Observed Low Temperature