Illinois Snow Day Forecast & School Closings
Illinois stretches nearly 400 miles from north to south, and its snow day patterns reflect that range. Chicago and the northern tier average 35–40 inches of snowfall annually, while southern Illinois near Cairo may see barely 10 inches. The Chicago metro area alone contains over 1.5 million students across hundreds of districts, making Chicagoland snow day decisions among the most consequential in the Midwest.
Active Closures & Delays
Sources update throughout the morning. Always confirm with your school district for the latest information.
Illinois Recent Snow Days
| Date | Closings | Delays | Other | Most Active County |
|---|---|---|---|---|
| Mar 27, 2026 | — | — | 1 | Danville |
| Mar 17, 2026 | 26 | 11 | 1 | Hancock |
| Mar 16, 2026 | 246 | 6 | 5 | Winnebago |
| Mar 15, 2026 | 56 | — | — | Winnebago |
| Mar 11, 2026 | 2 | — | — | Mason & Tazewell |
| Mar 10, 2026 | 2 | — | 2 | Bureau |
| Mar 6, 2026 | 1 | — | — | Cook |
| Mar 5, 2026 | 1 | — | — | Cook |
| Mar 4, 2026 | 1 | — | — | Cook |
| Feb 26, 2026 | — | — | 1 | Hancock |
| Feb 20, 2026 | — | 1 | — | Jo Daviess |
| Feb 18, 2026 | 1 | — | — | Will |
Closing data is gathered from public sources and may not reflect every district. Always confirm with your school for official status.
Check Your Forecast
Snow Zones in Illinois
Chicago and the collar counties. Lake Michigan can enhance snowfall on the immediate lakefront and occasionally produces lake-effect bands. With the highest concentration of students in the state, closure decisions here affect hundreds of thousands of families. Schools close 3–6 times per year.
Rockford, DeKalb, and the northwest corner receive comparable snowfall to Chicago but without the same urban infrastructure. Rural roads and open terrain make blowing and drifting snow a major hazard. Schools close 4–7 times per year.
Springfield, Peoria, Champaign, and Bloomington-Normal. Moderate snowfall with occasional significant systems. Ice storms can be more disruptive than snow. Schools close 2–5 times per year.
Carbondale, Marion, and the southernmost counties bordering Kentucky. The least snow in the state and the lowest preparedness. Ice storms are the primary winter hazard, and 2–3 inches of snow can shut down schools that rarely see significant accumulation. Schools close 1–3 times per year.
Major School Districts in Illinois
Notable Winter Storms
A historic blizzard buried Chicago under over 20 inches of snow with 60+ mph wind gusts. Lake Shore Drive was shut down and hundreds of motorists were stranded. Chicago Public Schools closed for two days — a rare occurrence for the district.
A powerful New Year's storm struck northern and central Illinois. Chicago received over 18 inches and Rockford over 16. Schools across the northern half of the state were closed for multiple days.
Extreme cold shut down schools statewide. Wind chills reached -40°F to -50°F in northern Illinois. CPS closed for cold — a rarity for a district that typically only closes for accumulation.
Part of Winter Storm Uri that devastated Texas, this system also brought heavy snow across central and southern Illinois. Schools across the state closed, with southern Illinois — which rarely handles heavy snow — particularly impacted.
Snow Day FAQ
How many snow days does Illinois get per year?
Northern Illinois and Chicagoland average 3–7 closure days. Central Illinois sees 2–5. Southern Illinois typically has 1–3. Chicago Public Schools, the largest district in the state, historically closes very rarely — only for major events.
Will school be closed tomorrow in Illinois?
It depends on the forecast, storm timing, and local road conditions. Enter your ZIP code above to see the latest closure and delay probabilities for your area. Predictions update automatically as National Weather Service forecasts change.
What triggers a snow day in Illinois?
Most Illinois districts close for 3–4 inches of forecast snow or significant ice. CPS has higher thresholds given the urban transit infrastructure. Wind chill is an independent trigger, with most districts closing when wind chills drop below -30°F to -35°F.
Does Illinois use virtual snow days?
Illinois allows up to 5 e-learning days per school year that do not need to be made up. Many districts adopted this after COVID, and it has become the norm in areas that frequently lose days to winter weather. Some districts use a hybrid approach, reserving 1–2 traditional snow days alongside e-learning options.
Do Chicago Public Schools close for snow?
CPS is notoriously reluctant to close and has stayed open through many storms that shut down suburban districts. However, CPS does close for extreme events — the 2011 Groundhog Day Blizzard and the 2014 polar vortex both forced closures. When CPS closes, it affects over 325,000 students.