Sunman-Dearborn Community School Corporation Snow Day Predictor
The odds of a closing or a delay on the next three school mornings in Sunman-Dearborn, measured against Sunman-Dearborn's own big snow morning of 2.4 inches.
The next three school mornings
Will Sunman-Dearborn close tomorrow?
Reading the National Weather Service forecast for the overnight and the bus hours in St Leon.
Ten winters of school mornings
Sunman-Dearborn’s snow record
16.4inches of snow a winter
1.6school mornings a winter with 2 in of new snow or more
0.3with 4 in or more
2.4 ina big snow morning in Sunman-Dearborn: the top tenth of snowy school mornings
0.7Nov
2.8Dec
6.9Jan
4.4Feb
1.2Mar
Average snowfall by month, inches
Biggest day 10.4 in on January 25, 2026
Snowiest winter 2025 to 2026, 26.2 in
6 in mornings 0.1 a winter
1 in mornings 3.8 a winter
Measured at a NOAA weather station 13 miles away. Mornings are the 7 am snow reading on a weekday from December 1 through March 31, over the ten winters from 2016 to 2017 through 2025 to 2026, from NOAA GHCN Daily.
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The Indiana rule
How Indiana counts a lost day
Indiana requires at least 180 student instructional days a school year.
Every school in Sunman-Dearborn follows the district’s call: one closing covers them all.
High
East Central High School
Middle
East Central Middle School
Elementary
North Dearborn Elementary School, West Harrison
Bright Elementary School, Lawrenceburg
Sunman Elementary School, Sunman
Questions
Sunman-Dearborn snow day questions
About 16.4 inches a winter at a NOAA weather station 13 miles away, averaged over 9 winters. Between December 1 and March 31 that brings 1.6 weekday mornings a year with 2 inches of new snow or more, and 0.3 with 4 inches or more.
10.4 inches on January 25, 2026, the largest single day at a NOAA weather station 13 miles away in 9 winters. The snowiest winter was 2025 to 2026, with 26.2 inches.
It reads the National Weather Service forecast for St Leon through the night and the 5 to 8 am bus run, adds winter alerts and the Winter Storm Severity Index, and measures the snow against Sunman-Dearborn’s own big snow morning: 2.4 inches, the top tenth of snowy weekday mornings at a NOAA weather station 13 miles away.
Indiana requires at least 180 student instructional days a school year.
Three school mornings, as far as the National Weather Service hourly forecast reaches. Weekends and breaks are skipped, so a Friday storm is read for Monday’s buses.
The morning after a big one: cars buried to the mirrors and one set of tracks down the middle. A street like this is a closing, no debate. Photo, Fairfax, Virginia, January 2016: Jarek Tuszyński, CC BY 4.0
The odds are a forecast read, and the superintendent makes the call: the district’s own announcement is the one to follow.
