#T1Postville
Allamakee County · 2,402 peopleJuly high·January low 8°·9 days of 90°+ a year
Postville, #1 on this list · Turner Hall · Photo: Jonathunder · CC BY-SA 3.0Iowa rankings · Climate
Towns with the coolest summers in Iowa
Postville (tied with 1 more) has the coolest summers of Iowa’s 142 towns of 2,500+: July afternoons average a high of 81° (NOAA 1991–2020 normals). The typical town here averages 84°; none of the 142 stay under 80°.
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
#T181°
#T1Waukon
Allamakee County · 3,849 peopleJuly high·January low 9°·8 days of 90°+ a year
#T3Cresco
Howard County · 3,925 peopleJuly high·January low 7°·8 days of 90°+ a year
All 142 towns
July high, lowest 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 coolest summers?
Postville (Allamakee County): July afternoons average a high of 81°. Waukon (81°) and Cresco (81°) follow.
How are these towns ranked?
By the average July high (the warmest month’s afternoons), lowest 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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