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Snow Day Calculator

Snow Day Calculator for Iowa

Will schools in Iowa be closed tomorrow?

Tomorrow by city

Chance of school closure and delay tomorrow in Iowa
CityClosureLink
Des MoinesDes Moines Independent Comm School District
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Cedar RapidsCedar Rapids Comm School District
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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
Chance of school closures tomorrow by county, updated hourly. Estimate from the National Weather Service forecast; your district makes the call.

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—chance of closure
—chance of a delay

Snow by hour

Adjust for your school

Rough adjustments, saved on this device only. What they do

From the National Weather Service forecast, updated hourly. Estimate only. Your district makes the call.

How much snow Iowa gets

PlacePopulationSnow a yearDays 3+ in.
Des Moines213,09637 in.3.9
Cedar Rapids137,90434 in.3.7
Davenport100,93836 in.3.5
Sioux City86,87536 in.3.4
Ankeny76,72725 in.2.8

NOAA NCEI U.S. Climate Normals 1991–2020, nearest station at a similar elevation. Population: U.S. Census Bureau, 2024 estimates. Across Iowa, yearly snowfall ranges from 17 to 49 inches.

Cities in Iowa

School districts (59)

Iowa snow day questions

Will schools in Iowa 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 Iowa?

It depends a lot on where you are: average yearly snowfall across Iowa ranges from 17 to 49 inches (NOAA 1991–2020 normals at weather stations near 970 ZIP codes). Among the largest places, Des Moines averages 37 inches.

How much snow closes schools in Iowa?

It varies by district and by how often each area gets snow. In the snowiest parts of Iowa, 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.

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