FrostList

Sprinkler Winterization in Illinois

In Illinois, local sprinklers deadlines run from Oct 14 to Nov 5, with a median around Oct 22 — a spread of weeks that a single statewide date would miss. Find your city below; each links to local freeze odds, a live 10-day outlook, and a checklist.

Notable cities

All Illinois cities

CityLocal deadlineMedian first 28°F
SchaumburgOct 14Oct 24View →Checklist
Hoffman EstatesOct 14Oct 24View →Checklist
BartlettOct 14Oct 24View →Checklist
StreamwoodOct 14Oct 24View →Checklist
Hanover ParkOct 14Oct 24View →Checklist
NapervilleOct 16Oct 26View →Checklist
WheatonOct 16Oct 26View →Checklist
Downers GroveOct 16Oct 26View →Checklist
LombardOct 16Oct 26View →Checklist
NormalOct 17Oct 27View →Checklist
RockfordOct 18Oct 28View →Checklist
DeKalbOct 18Oct 28View →Checklist
ElginOct 19Oct 29View →Checklist
Carol StreamOct 19Oct 29View →Checklist
CarpentersvilleOct 19Oct 29View →Checklist
WaukeganOct 20Oct 30View →Checklist
BloomingtonOct 20Oct 30View →Checklist
PalatineOct 20Oct 30View →Checklist
Tinley ParkOct 20Oct 30View →Checklist
BellevilleOct 20Oct 30View →Checklist
Calumet CityOct 20Oct 30View →Checklist
MolineOct 21Oct 31View →Checklist
Rock IslandOct 21Oct 31View →Checklist
SpringfieldOct 22Nov 1View →Checklist
EvanstonOct 22Nov 1View →Checklist
BolingbrookOct 22Nov 1View →Checklist
SkokieOct 22Nov 1View →Checklist
Orland ParkOct 22Nov 1View →Checklist
GlenviewOct 22Nov 1View →Checklist
PlainfieldOct 22Nov 1View →Checklist
Crystal LakeOct 22Nov 1View →Checklist
RomeovilleOct 22Nov 1View →Checklist
AuroraOct 23Nov 2View →Checklist
PeoriaOct 23Nov 2View →Checklist
ChampaignOct 23Nov 2View →Checklist
UrbanaOct 23Nov 2View →Checklist
DecaturOct 24Nov 3View →Checklist
JolietOct 25Nov 4View →Checklist
Arlington HeightsOct 28Nov 7View →Checklist
Des PlainesOct 28Nov 7View →Checklist
Mount ProspectOct 28Nov 7View →Checklist
ElmhurstOct 28Nov 7View →Checklist
Buffalo GroveOct 28Nov 7View →Checklist
WheelingOct 28Nov 7View →Checklist
Park RidgeOct 28Nov 7View →Checklist
AddisonOct 28Nov 7View →Checklist
QuincyOct 29Nov 8View →Checklist
CiceroNov 1Nov 11View →Checklist
Oak LawnNov 1Nov 11View →Checklist
BerwynNov 1Nov 11View →Checklist
Oak ParkNov 1Nov 11View →Checklist
ChicagoNov 5Nov 15View →Checklist

Back to the national Sprinkler Winterization guide, or see the methodology.

Data: NOAA NCEI 1991–2020 U.S. Climate Normals; live outlook by Open-Meteo. Last updated: July 11, 2026.