Snow Day Calculator for Joliet, IL
Will Joliet schools be closed tomorrow?
Tomorrow by school district
| District | Closure | Link |
|---|---|---|
| Troy Community Consolidated School District 30C | — | — |
| Joliet Township High School District 204 | — | — |
| Plainfield School District 202 | — | — |
| Minooka Community High School District 111 | — | — |
| Joliet Public School District 86 | — | — |
| Minooka Community Consolidated School District 201 | — | — |
| Lockport Township High School District 205 | — | — |
| Rockdale School District 84 | — | — |
| Laraway Community Consolidated School District 70C | — | — |
| Elwood Community Consolidated School District 203 | — | — |
Districts serving Joliet ZIP codes (NCES). Chances from the National Weather Service forecast.
Not listed? Enter your ZIP
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Snow by hour
From the National Weather Service forecast, updated hourly. Estimate only. Your district makes the call.
Snow in Joliet: what is normal
- Snow a year
- 17 in.
- Days with 3+ in.
- 2.6
- Days with 1+ in.
- 6.7
NOAA NCEI U.S. Climate Normals 1991–2020, Joliet Brandon Rd Dam, IL station. Averages per year.
Joliet gets snow most winters, so districts plan for it. The calculator scales each storm by this local normal: in Joliet, closures usually take about 6 inches overnight, or ice, or snow at the worst time of the morning. How the calculator works.
What closes schools in Joliet (our model)
| Overnight snow | about 6 inches |
|---|---|
| Ice (freezing rain) | about 0.17 in. |
| Wind chill at bus time | −25°F |
| Normal winter low | 20°F |
Levels where a closure becomes likely in our model, from NOAA normals. Not a district policy.
ZIP codes covered
60431, 60436, 60435, 60403, 60404
ZIP codes inside or near Joliet. Each has its own forecast; enter yours above for your district.
Joliet snow day questions
Will Joliet, IL schools be closed tomorrow?
The calculator above shows tomorrow's chance of a closure and of a delay for each Joliet-area school district, from tonight's National Weather Service forecast. It updates every hour from the afternoon until morning. It is an estimate: your district makes and announces the decision, often early in the morning or the evening before a big storm.
How much snow does Joliet, IL get?
Joliet averages 17 inches of snow a year, with about 2.6 days a year of 3 inches or more and 6.7 days of an inch or more (NOAA 1991–2020 climate normals, Joliet Brandon Rd Dam, IL station).
How much snow does it take to close schools in Joliet, IL?
Our model treats about 6 inches of snow falling overnight as the level where closures become likely in Joliet, because the area sees 2.6 days a year with 3+ inches and is used to plowing. Ice, a winter storm warning, or heavy snow right at bus time can close schools with less.
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.
- Wind chill and school closings
How cold is too cold for school, the NWS cold alerts, and local cold lines by city.
- Signs of a snow day tomorrow
The forecast signs that really matter, and the folklore that doesn't.
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Joliet: did school close today?
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