Holly, Michigan, 3,137 students in 6 schools

Holly Area School District Snow Day Predictor

Q: How much snow does Holly get?

About 50.8 inches a winter at a NOAA weather station 9.5 miles away, averaged over 10 winters. Between December 1 and March 31 that brings 5.1 weekday mornings a year with 2 inches of new snow or more, and 2.1 with 4 inches or more.

Q: What was the biggest snow day near Holly?

11 inches on December 11, 2016, the largest single day at a NOAA weather station 9.5 miles away in 10 winters. The snowiest winter was 2017 to 2018, with 87.3 inches.

Q: Does Holly get more snow days than other Michigan districts?

Holly averages 2.1 weekday mornings a winter with 4 inches of new snow or more, more than 68 percent of the 515 Michigan districts with a station record.

Q: How does the Holly snow day predictor work?

It reads the National Weather Service forecast for Holly 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 Holly’s own big snow morning: 2.8 inches, the top tenth of snowy weekday mornings at a NOAA weather station 9.5 miles away.

The odds of a closing or a delay on the next three school mornings in Holly, measured against Holly's own big snow morning of 2.8 inches.

The next three school mornings

Will Holly close tomorrow?

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

Ten winters of school mornings

Holly’s snow record

50.8inches of snow a winter

5.1school mornings a winter with 2 in of new snow or more

2.1with 4 in or more

2.8 ina big snow morning in Holly: the top tenth of snowy school mornings

6.4school mornings a winter at 0 F or colder

More 4 inch school mornings than 68% of the 515 Michigan districts with a station record.

5.2Nov

10.5Dec

14.4Jan

12.6Feb

6.1Mar

Average snowfall by month, inches

Biggest day 11 in on December 11, 2016
Snowiest winter 2017 to 2018, 87.3 in
6 in mornings 0.7 a winter
1 in mornings 9.5 a winter

Measured at a NOAA weather station 9.5 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 Holly

District	Snow a winter	4 in mornings
Fenton Area Public SchoolsFenton	24.2 in	0.9
Grand Blanc Community SchoolsGrand Blanc	36.5 in	0.6
Brandon School DistrictOrtonville	36.5 in	0.6
Goodrich Area SchoolsGoodrich	36.5 in	0.6
Linden Community SchoolsLinden	24.2 in	0.9
Clarkston Community School DistrictClarkston	32.8 in	1.1

The schools

6 schools

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

High

Holly High School

Middle

Holly Middle School

Elementary

Patterson Elementary School
Davisburg Elementary School, Davisburg
Holly Elementary School
Rose Pioneer Elementary School

Questions

Holly snow day questions

How much snow does Holly get?

What was the biggest snow day near Holly?

Does Holly get more snow days than other Michigan districts?

How does the Holly snow day predictor work?

How does Michigan handle snow days?

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.