Snow Day Calculator for Illinois
Will schools in Illinois be closed tomorrow?
Tomorrow by city
| City | Closure | Link |
|---|---|---|
| ChicagoChicago Public Schools Dist 299 | — | — |
| AuroraAurora East Unit School District 131 | — | — |
| NapervilleIndian Prairie Community Unit School District 204 | — | — |
| JolietTroy Community Consolidated School District 30C | — | — |
| RockfordRockford School District 205 | — | — |
Chance for each city's main ZIP code. Your district may differ: enter your ZIP above.
Tomorrow by county
- 0–29%Unlikely
- 30–59%Possible
- 60–79%Likely
- 80–95%Very likely
- No school
Loading tonight's forecast…
—chance of closure
—chance of a delay
Snow by hour
From the National Weather Service forecast, updated hourly. Estimate only. Your district makes the call.
How much snow Illinois gets
| Place | Population | Snow a year | Days 3+ in. |
|---|---|---|---|
| Chicago | 2,721,308 | 39 in. | 3.6 |
| Aurora | 180,710 | 28 in. | 4.1 |
| Naperville | 153,124 | 24 in. | 2.8 |
| Joliet | 151,837 | 17 in. | 2.6 |
| Rockford | 147,486 | 37 in. | 3.9 |
NOAA NCEI U.S. Climate Normals 1991–2020, nearest station at a similar elevation. Population: U.S. Census Bureau, 2024 estimates. Across Illinois, yearly snowfall ranges from 3 to 46 inches.
Cities in Illinois
School districts (131)
- Addison School District 4
- Alsip-Hazelgreen-Oaklawn School District 126
- Antioch Community Consolidated School District 34
- Arlington Heights School District 25
- Aurora East Unit School District 131
- Aurora West Unit School District 129
- Ball-Chatham Community Unit School District 5
- Batavia Unit School District 101
- Bellwood School District 88
- Belvidere Consolidated Unit School District 100
- Berkeley School District 87
- Berwyn South School District 100
- Burbank School District 111
- Cahokia Community Unit School District 187
- Carmi-White County Community Unit School District 5
- Central Community Unit School District 301
- Champaign Community Unit School District 4
- Charleston Community Unit School District 1
- Chicago Heights School District 170
- Chicago Public Schools
- Cicero School District 99
- Community Consolidated School District 146
- Community Consolidated School District 59
- Community Consolidated School District 93
- Community Unit School District 200
- Community Unit School District 300
- Cook County School District 130
- Crete-Monee Community Unit School District 201-U
- Crystal Lake Community Consolidated School District 47
- Danville Community Consolidated School District 118
- Decatur School District 61
- DeKalb Community Unit School District 428
- Dixon Unit School District 170
- Dolton School District 148
- Dolton School District 149
- Downers Grove Grade School District 58
- Dunlap Community Unit School District 323
- East Moline School District 37
- East Peoria School District 86
- East St. Louis School District 189
- Elementary School District 159
- Elmhurst School District 205
- Evanston Community Consolidated School District 65
- Flossmoor School District 161
- Freeport School District 145
- Galesburg Community Unit School District 205
- Geneseo Community Unit School District 228
- Geneva Community Unit School District 304
- Glen Ellyn School District 41
- Glenview Community Consolidated School District 34
- Harvard Community Unit School District 50
- Hawthorn Community Consolidated School District 73
- Hinsdale Community Consolidated School District 181
- Homer Community Consolidated School District 33C
- Illinois Valley Central Unit School District 321
- Indian Prairie Community Unit School District 204
- Indian Springs School District 109
- Iroquois West Community Unit School District 10
- Jacksonville School District 117
- Jersey Community Unit School District 100
- Joliet Public School District 86
- Kaneland Community Unit School District 302
- Kankakee School District 111
- Kewanee Community Unit School District 229
- Kildeer Countryside Community Consolidated School District 96
- LaGrange School District 102
- LaGrange School District 105
- Lake Forest School District 67
- Lake Zurich Community Unit School District 95
- Lansing School District 158
- Libertyville School District 70
- Lombard School District 44
- Mannheim School District 83
- Marion Community Unit School District 2
- Marquardt School District 15
- Matteson Elementary School District 162
- Maywood-Melrose Park-Broadview School District 89
- McHenry Community Consolidated School District 15
- McLean County Unit School District 5
- Mercer County School District 404
- Moline-Coal Valley School District 40
- Monmouth-Roseville Community Unit School District 238
- Morton Community Unit School District 709
- Naperville Community Unit District 203
- New Lenox School District 122
- North Boone Community Unit School District 200
- North Chicago School District 187
- North Palos School District 117
- North Shore School District 112
- Oak Lawn-Hometown School District 123
- Oak Park Elementary School District 97
- Orland School District 135
- Oswego Community Unit School District 308
- Ottawa Elementary School District 141
- Palatine Community Consolidated School District 15
- Paris-Union School District 95
- Park Ridge Consolidated Community School District 64
- Pekin Public School District108
- Peoria School District 150
- Peotone Community Unit School District 207U
- Plainfield School District 202
- Posen-Robbins Elementary School District 143-5
- Prairie-Hills Elementary School District 144
- Princeton Elementary School District 115
- Quincy School District 172
- Rantoul City School District 137
- Ridgeland School District 122
- Riverside School District 96
- Rockford School District 205
- Rockridge Community Unit School District 300
- Round Lake Community Unit School District 116
- Sandwich Community Unit School District 430
- Schaumburg Community Consolidated School District 54
- School District U-46
- SD 45 DuPage County
- Springfield School District 186
- St. Charles Community Unit School District 303
- Sterling Community Unit District 5
- Summit Hill School District 161
- Troy Community Consolidated School District 30C
- Urbana School District 116
- Valley View Community Unit School District 365U
- Waukegan Community Unit School District 60
- West Chicago School District 33
- Westmont Community Unit School District 201
- Wheeling Community Consolidated School District 21
- Wilmette School District 39
- Woodridge School District 68
- Woodstock Community Unit School District 200
- Yorkville Community Unit School District 115
- Zion Elementary School District 6
Illinois snow day questions
Will schools in Illinois be closed tomorrow?
Enter your ZIP code above for your district's chance of a closure or delay tomorrow, or pick a city below. Each district decides for itself; the calculator estimates the chance from tonight's National Weather Service forecast and updates hourly from the afternoon until morning.
How much snow falls in Illinois?
It depends a lot on where you are: average yearly snowfall across Illinois ranges from 3 to 46 inches (NOAA 1991–2020 normals at weather stations near 1,396 ZIP codes). Among the largest places, Chicago averages 39 inches.
How much snow closes schools in Illinois?
It varies by district and by how often each area gets snow. In the snowiest parts of Illinois, closures usually take several inches overnight; in places that rarely see snow, an inch or two can close schools. The calculator scales each storm by the local NOAA normal for your ZIP.
Guides
- How much snow cancels school?
From one inch in Atlanta to a foot in Buffalo: what it takes in every state, with NOAA data.
- What time are snow days announced?
When districts decide, how they tell families, and when to check the calculator.
- Signs of a snow day tomorrow
The forecast signs that really matter, and the folklore that doesn't.