#1Metropolis
Massac County · 5,727 peopleJanuary low·July high 89°·83 freezing nights a year
Metropolis, #1 on this list · Photo: Nyttend · Public domainIllinois rankings · Climate
Towns with the mildest winters in Illinois
Metropolis has the mildest winters of Illinois’ 713 towns of 2,500+: January nights average a low of 27° (NOAA 1991–2020 normals). The typical town here averages 17°; none of the 713 stay above freezing.
The average January low. 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
#127°
#T2Carrier Mills Township
Saline County · 2,221 peopleJanuary low·July high 88°·95 freezing nights a year
#T2Harrisburg
Saline County · 7,922 peopleJanuary low·July high 88°·95 freezing nights a year
All 713 towns
January low, highest first. Towns with the same figure share a rank (T = tied; 691 towns here).
713 towns ranked. Not here? See why a town may be missing.
#TownJanuary lowNights ≤32°July high
Quick answers
Questions people ask
Which Illinois town has the mildest winters?
Metropolis (Massac County): January nights average a low of 27°. Carrier Mills Township (25°) and Harrisburg (25°) follow.
How are these towns ranked?
By the average January low (the coldest month’s nights), 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 (713 in Illinois): 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 Illinois page.
Go deeper
All Illinois rankings →More Illinois lists
Every list ranks the same 2,500+ towns, so a town’s rank means the same thing on each.
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