Grass Lake, Michigan, 1,333 students in 3 schools

Grass Lake Community Schools Snow Day Predictor

Q: How much snow does Grass Lake get?

About 32.1 inches a winter at a NOAA weather station 11 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 with 4 inches or more.

Q: What was the biggest snow day near Grass Lake?

8 inches on March 4, 2023, the largest single day at a NOAA weather station 11 miles away in 10 winters. The snowiest winter was 2017 to 2018, with 45 inches.

Q: How does the Grass Lake snow day predictor work?

It reads the National Weather Service forecast for Grass Lake 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 Grass Lake’s own big snow morning: 3 inches, the top tenth of snowy weekday mornings at a NOAA weather station 11 miles away.

Q: How far ahead does the Grass Lake snow day predictor look?

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 odds of a closing or a delay on the next three school mornings in Grass Lake, measured against Grass Lake's own big snow morning of 3 inches.

The next three school mornings

Will Grass Lake close tomorrow?

Reading the National Weather Service forecast for the overnight and the bus hours in Grass Lake.

Ten winters of school mornings

Grass Lake’s snow record

32.1inches of snow a winter

3.8school mornings a winter with 2 in of new snow or more

1with 4 in or more

3 ina big snow morning in Grass Lake: the top tenth of snowy school mornings

4.2school mornings a winter at 0 F or colder

3.6Nov

5.2Dec

10Jan

9Feb

3.8Mar

Average snowfall by month, inches

Biggest day 8 in on March 4, 2023
Snowiest winter 2017 to 2018, 45 in
6 in mornings 0.2 a winter
1 in mornings 7.6 a winter

Measured at a NOAA weather station 11 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.

The Michigan rule

How Michigan counts a lost day

Michigan requires at least 180 days and 1,098 hours of pupil instruction. The first 6 days (or the same hours) lost to conditions outside the district's control, such as severe storms, are counted as instruction; up to 3 more can be approved by the State Superintendent.

The Michigan rules in the agency’s own words, and every Michigan district

Next door

Districts near Grass Lake

District	Snow a winter	4 in mornings
Napoleon Community SchoolsNapoleon	28.3 in	1.1
Michigan Center School DistrictMichigan Center	28.3 in	1.1
Chelsea School DistrictChelsea	32.1 in	1
Jackson Public SchoolsJackson	28.3 in	1.1
Columbia School DistrictBrooklyn	28.3 in	1.1
Stockbridge Community SchoolsStockbridge	34.7 in	0.6

The schools

3 schools

Every school in Grass Lake follows the district’s call: one closing covers them all.

High

Grass Lake High School

Middle

Grass Lake Middle School

Elementary

George Long Elementary School

Questions

Grass Lake snow day questions

How much snow does Grass Lake get?

What was the biggest snow day near Grass Lake?

How does the Grass Lake snow day predictor work?

How does Michigan handle snow days?

How far ahead does the Grass Lake snow day predictor look?

More winter

More for Michigan snow days

Snow day predictorClosing and delay odds for any ZIP, with the snowiest districts in the country.Snow depth mapHow much snow is on the ground right now, measured, across the country.First snow datesWhen the first measurable snow usually lands where you live.Frozen pipesThe nights cold enough to freeze a pipe, and what to do before one.Snow plow trackerWhere the plows are during a storm, city by city.Michigan winter forecastThe season ahead for Michigan: snowfall, cold and the first snow.

A residential street under deep snow on a bright blue morning, cars parked along the curb buried into smooth white mounds, one set of tire tracks down the middle — 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.