#1Council Bluffs
Pottawattamie County · 62,680 peopleJuly high·January low 14°·33 days of 90°+ a year
Council Bluffs, #1 on this list · Photo: Tony Webster from Minneapolis, Minnesota, United States · CC BY-SA 2.0Iowa rankings · Climate
Towns with the hottest summers in Iowa
Council Bluffs has the hottest summers of Iowa’s 142 towns of 2,500+: July afternoons average a high of 87° (NOAA 1991–2020 normals). The typical town here averages 84°; none of the 142 average 90° or more.
The average July high. NOAA U.S. Climate Normals, 1991–2020, from NOAA’s 5 km grid at each town’s center; one town for each grid cell. A described list: no letters. How grades work
#187°
#2Carter Lake
Pottawattamie County · 3,670 peopleJuly high·January low 14°·33 days of 90°+ a year
#3Keokuk
Lee County · 9,510 peopleJuly high·January low 18°·26 days of 90°+ a year
All 142 towns
July high, highest first. Towns with the same figure share a rank (T = tied; 130 towns here).
142 towns ranked. Not here? See why a town may be missing.
#TownJuly highDays ≥90°January low
Quick answers
Questions people ask
Which Iowa town has the hottest summers?
Council Bluffs (Pottawattamie County): July afternoons average a high of 87°. Carter Lake (86°) and Keokuk (86°) follow.
How are these towns ranked?
By the average July high (the warmest month’s afternoons), highest first, on NOAA’s 1991–2020 normals, read from its 5 km grid at each town’s center. Towns with the same figure share a rank (T); the figure and the state rank are the ones on each town’s Climate page. How grades work.
Why isn’t my town on this list?
The list covers towns of 2,500+ residents, one for each of NOAA’s 5 km grid cells (142 in Iowa): where towns share a cell, one of them stands for it, since the grid gives them the same figures. Every town’s own figures are on its Climate page. Every town is on the Iowa page.
Go deeper
All Iowa rankings →More Iowa lists
Every list ranks the same 2,500+ towns, so a town’s rank means the same thing on each.
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