Illinois Snow Day Calculator

Will Your School Close Due to Snow?

Instant snow day predictions for schools across Illinois

Illinois School Closure Prediction Tool

Enter Illinois city or ZIP code

Illinois Snow Day Forecast Results

Illinois ZIP Code Coverage

Chicago Metropolitan Area

6000160699

Northern Illinois

6100161299

Central Illinois

6170161799

Southern Illinois

6200162999

For accurate Illinois Snow Day Calculator predictions, please enter a ZIP code from your specific region as conditions vary significantly between northern and southern regions

Illinois Snow Statistics & Information

Geographic Features

  • Lake Michigan Shoreline
  • Illinois River
  • Mississippi River
  • Shawnee Hills
  • Prairie Lands

Snow Statistics

Annual Average Snowfall

28 inches

Snow Days per Year

40 days

School Information

Average Snow Days

4 days/year

School Districts

852

Illinois Historical Snow Events

Chicago Blizzard of 1967

1967-01-26

Snowfall: 29 inches

Record snowfall in Chicago, city paralyzed for days

Groundhog Day Blizzard

2011-02-01

Snowfall: 21.2 inches

Third-largest snowfall in Chicago history, widespread school closures

Polar Vortex of 2019

2019-01-30

Snowfall: 15 inches

Schools closed statewide due to dangerous wind chills below -50°F

Illinois Snow Facts

The Chicago Blizzard of 1967 remains the city's record single-day snowfall at 29 inches

Illinois has experienced temperatures as low as -36°F, recorded in Congerville on January 5, 1999

The Lake Michigan effect can cause dramatic differences in snowfall between Chicago's north and south sides

Illinois was one of the pioneers in implementing e-learning days during severe weather

The state's snowiest winter was 1978-1979 when Chicago received 89.7 inches of snow

Illinois Department of Transportation maintains over 16,000 miles of roads during winter storms