Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >

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

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

Yesterday's 24 hour high temperature reports,
for eastern Iowa, northwest and west central Illinois,
and northeast Missouri. Reported Monday July 21, 2025.

....IOWA....
Oskaloosa AWOS                     87
Ottumwa ASOS                       85
Iowa City Arpt                     85
Cedar Rapids Arpt                  85
Burlington Arpt                    85
Waterloo ASOS                      84
Davenport Arpt                     84
Marshalltown ASOS                  83
Grinnell AWOS                      82
Mason City ASOS                    80
Clinton Arpt                       80
....ILLINOIS....
Peoria Arpt                        87
Quad City Arpt                     85
Decatur Airport                    84
Macomb Arpt                        84
Jacksonville Arpt                  83
Quincy Arpt                        82
Bloomington Airport                82
Joliet Arpt                        78
Rochelle Arpt                      76
....MISSOURI....
Columbia Arpt                      91
....WISCONSIN....
Watertown-Arpt                     78
Madison Arpt                       78
Prairie du Chien AWOS              78

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Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Sunday High Temperature