SnowDayMeter

Snow day calculator Indiana

Chance of a snow day
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School

Best time to check

The evening before, after 9 pm
The evening model runs are in by then and the forecast here refreshes every 30 minutes. A number read at 6 pm can move by several inches of snow before midnight.
The morning of, 5 to 7 am
The strip above shades 4 to 7 am. Snow still falling in those hours lands on the commute, so the model counts it extra, and most districts have decided by the time the buses roll at 7.

When districts actually decide

Every district sets its own cut-off; these are published examples, not a rule.

Indiana schools usually close around 4 inches of overnight snow. Four inches overnight or a wind chill warning brings closures; e-learning days replace many of them now. The meter below opens on Indianapolis; type your ZIP or town and it reads tonight's hourly forecast for your exact spot and scores it against the Indiana threshold.

How much snow it takes in Indiana

Indiana splits at the lake. South Bend, in the Lake Michigan snow belt, averages 64.5 inches a season and 6.5 days with 3 inches or more; Fort Wayne averages 33.6 inches and Indianapolis 25.5, with 2.2 such days. January is the snowiest month in all three. The model's 4-inch threshold is the Indianapolis number; Michiana districts shrug off 4 inches and close for lake-effect bands and drifting on county roads.

Wind chill is the other Indiana closer, and e-learning has changed what a closure means. When a storm dropped almost a foot on Indianapolis in late January 2026, central Indiana districts were still closed two days later, and Indianapolis Public Schools ran a synchronous e-learning day on 27 January instead of a plain closure. The state transportation department deploys more than 1,000 plows over 29,000 lane miles and pre-treats with brine, so the interstates are rarely the problem; the bus routes are.

Indiana winter by the numbers

StationSnow per seasonDays with 1″+Days with 3″+Snowiest month
Indianapolis25.5″7.62.2Jan
Fort Wayne33.6″10.72.7Jan
South Bend64.5″20.36.5Jan

1991-2020 climate normals for the airport or first-order station in each city, read 2026-10-10 from the NOAA NCEI U.S. Climate Normals. “Days with 3″+” is the average number of calendar days a year with at least 3 inches of new snow.

How closures are decided in Indiana

Indiana requires 180 instructional days (IC 20-30-2-3), and the State Board of Education has granted flexibility waivers that let a district meet the equivalent in in-person instructional minutes rather than calendar days. For weather, the Department of Education's December 2025 guidance says districts make up days in person using the snow days built into their calendars, or through asynchronous instruction, and should contact the department when neither is possible, for instance after a power outage.

The virtual rule is a count of asynchronous days. By statute a school may have up to three asynchronous learning days a year, while synchronous days, where students and teachers are online together, are not limited. That is why Indianapolis chose a synchronous day in January 2026: it preserved the asynchronous allowance for a storm with no warning. We did not find an official programme name, approver or enactment year in the documents we could read. Each of the 291 regular districts makes its own closure call.

Minimum school year
180 instructional days (IC 20-30-2-3), or equivalent minutes under a State Board waiver
Remote days
Up to 3 asynchronous days a year; synchronous days unlimited
Make-up
Built-in snow days or asynchronous instruction, per the Department of Education
Regular districts
291 (NCES, 2021-22)

Questions people ask

What is the difference between a synchronous and an asynchronous e-learning day in Indiana?
A synchronous day has teachers and students online together at set times and is unlimited; an asynchronous day is self-paced work and is capped at three a school year. Districts tend to save the asynchronous days for storms that arrive without warning.
Do Indiana schools still have real snow days?
Yes, but fewer. The Department of Education expects districts to make up lost days in person using calendar snow days or through asynchronous instruction, so many districts now call an e-learning day where they once closed. The meter scores the chance that buildings close; the format is the district's choice.
Why does South Bend need so much more snow than Indianapolis?
Lake Michigan. South Bend averages 64.5 inches a season and 20.3 days with an inch or more, against 25.5 inches and 7.6 days in Indianapolis, so Michiana districts are built for routine snow and close for lake-effect bands and drifting instead. The model's 4-inch statewide threshold overstates the chance there.
Does Indiana close for wind chill?
Districts do, especially in the north where the open country roads and long bus waits make the wind chill the deciding factor. The meter scores wind chill at bus time and any Wind Chill or Extreme Cold Warning; for a dry, bitter night, use the cold-day calculator.

Sources

The closure threshold itself is our model's estimate from typical district practice, not an official figure. Districts, not states, make the call. The model page shows every term.

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