The odds of a closing or a delay on the next three school mornings in Grafton, measured against Grafton's own big snow morning of 5.5 inches.
The next three school mornings
Will Grafton close tomorrow?
Reading the National Weather Service forecast for the overnight and the bus hours in Grafton.
Ten winters of school mornings
Grafton’s snow record
37inches of snow a winter
3.8school mornings a winter with 2 in of new snow or more
1.9with 4 in or more
5.5 ina big snow morning in Grafton: the top tenth of snowy school mornings
4.9school mornings a winter at 0 F or colder
2.8Nov
5.8Dec
11.4Jan
9.8Feb
5.3Mar
Average snowfall by month, inches
Biggest day 12.1 in on November 30, 2025
Snowiest winter 2020 to 2021, 48.2 in
6 in mornings 0.9 a winter
1 in mornings 6.2 a winter
Measured at a NOAA weather station 1.1 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 Wisconsin rule
How Wisconsin counts a lost day
Wisconsin requires hours, not days: 437 for kindergarten, 1,050 for grades 1 to 6 and 1,137 for grades 7 to 12.
Every school in Grafton follows the district’s call: one closing covers them all.
High
Grafton High
Middle
John Long Middle
Elementary
Kennedy Elementary
Woodview Elementary
Questions
Grafton snow day questions
About 37 inches a winter at a NOAA weather station 1.1 miles away, averaged over 10 winters. Between December 1 and March 31 that brings 3.8 weekday mornings a year with 2 inches of new snow or more, and 1.9 with 4 inches or more.
12.1 inches on November 30, 2025, the largest single day at a NOAA weather station 1.1 miles away in 10 winters. The snowiest winter was 2020 to 2021, with 48.2 inches.
It reads the National Weather Service forecast for Grafton 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 Grafton’s own big snow morning: 5.5 inches, the top tenth of snowy weekday mornings at a NOAA weather station 1.1 miles away.
Wisconsin requires hours, not days: 437 for kindergarten, 1,050 for grades 1 to 6 and 1,137 for grades 7 to 12.
If a district offers make-up instruction virtually on a weather closure, those hours can count; the rule sets no cap on such days.
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.
