Snow Day Calculator Chicago, IL : Will School Be Closed Tomorrow?
Use our free Snow Day Calculator for Chicago, Illinois to instantly check the probability of school closures tomorrow. Our tool pulls real-time data from ECMWF and NOAA models, analyzes the critical 4–7 AM superintendent decision window, and factors in local snowfall history for an accurate prediction.
❄️ Snow Day Calculator
Will school be closed tomorrow? Instant prediction using live weather.
Fetching live weather data…
Snow Day History in Chicago, IL
Chicago averages approximately 37 inches of snow per year and sees around 28 snow days annually. Accurate snow day predictions are especially important for students, parents, and teachers across the Chicago metro area.
| Average Annual Snowfall | Average Snow Days | Peak Months |
|---|---|---|
| 37 inches | 28 days/year | January & February |
School Districts in the Chicago Area
Chicago Public Schools (CPS), one of the largest districts in the US. Our calculator works for all public, suburban, rural, and private schools — select your school type for the most accurate prediction.
How to Use the Chicago Snow Day Calculator
- Enter your ZIP code or type “Chicago, IL” in the location field
- Select your school type — urban, suburban, rural, private, or college
- Click “Check My Snow Day Chances” — live weather loads instantly
- Review your prediction — probability %, hourly snowfall chart, and key factors
- Subscribe for alerts — get notified by 9 PM the night before a likely snow day
Frequently Asked Questions
What time do Chicago schools announce snow days?
Most Chicago area districts announce closures between 5:00 AM and 7:00 AM. Superintendents make the call based on road conditions and ongoing snowfall from 4–6 AM. Subscribe to our alerts to get a prediction the night before.
How many inches of snow closes schools in Chicago?
Urban public schools in Chicago typically close with 4+ inches of snow; suburban schools at 3 inches; rural districts at 2 inches. However, ice and wind chill below -10°F can close schools regardless of snowfall amount.
How accurate is this snow day calculator for Chicago?
Our calculator uses ECMWF + NOAA weather models — professional-grade data — combined with hourly forecasts for Chicago. We weight the 4–7 AM decision window heavily, making predictions more relevant than generic weather apps.
Can I get Chicago snow day alerts on my phone?
Yes! After running the calculator above, subscribe to email or SMS alerts for Chicago. You’ll be notified by 9 PM the night before when there’s a significant closure risk.
Nearby calculators: Milwaukee · Indianapolis · Detroit
Chicago is not one district
Chicago Public Schools is one of the largest districts in the country and historically stays open through totals that close collar-county schools. Do not take a CPS call as the answer for Evanston, Naperville, Orland Park, or a north-suburban district. Enter your ZIP and the right school type.
O’Hare and Midway climate records put city snowfall in the mid-30-inch range in a typical season, with January and February doing most of the work. The lake can add squalls, but Chicago is not Buffalo. Ice on untreated side streets, not downtown Loop pavement, is what stops the first-tier buses.
Official CPS status: cps.edu. Suburban families should bookmark their own district, not CPS social accounts.