Thornwood, New York, 1,954 students in 4 schools

Mount Pleasant Central School District Snow Day Predictor

Q: How much snow does Thornwood get?

About 27.6 inches a winter at a NOAA weather station 3.3 miles away, averaged over 8 winters. Between December 1 and March 31 that brings 2.6 weekday mornings a year with 2 inches of new snow or more, and 1.6 with 4 inches or more.

Q: What was the biggest snow day near Mount Pleasant?

15.7 inches on February 23, 2026, the largest single day at a NOAA weather station 3.3 miles away in 8 winters. The snowiest winter was 2025 to 2026, with 60.4 inches.

Q: How does the Mount Pleasant snow day predictor work?

It reads the National Weather Service forecast for Thornwood 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 Mount Pleasant’s own big snow morning: 5.3 inches, the top tenth of snowy weekday mornings at a NOAA weather station 3.3 miles away.

Q: Can New York schools hold a remote day instead?

A district that would otherwise close for a storm may stay in session remotely under its emergency remote instruction plan, and that day counts toward the 180 days and the hours; districts are not required to do it.

The odds of a closing or a delay on the next three school mornings in Mount Pleasant, measured against Mount Pleasant's own big snow morning of 5.3 inches.

The next three school mornings

Will Mount Pleasant close tomorrow?

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

Ten winters of school mornings

Mount Pleasant’s snow record

27.6inches of snow a winter

2.6school mornings a winter with 2 in of new snow or more

1.6with 4 in or more

5.3 ina big snow morning in Mount Pleasant: the top tenth of snowy school mornings

1.2Nov

4.3Dec

6.8Jan

12.5Feb

2.8Mar

Average snowfall by month, inches

Biggest day 15.7 in on February 23, 2026
Snowiest winter 2025 to 2026, 60.4 in
6 in mornings 0.9 a winter
1 in mornings 4.8 a winter

Measured at a NOAA weather station 3.3 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 New York rule

How New York counts a lost day

New York requires 180 days of session plus 900 hours a year for kindergarten to grade 6 and 990 hours for grades 7 to 12. The Commissioner can excuse up to 5 days closed for extraordinary weather, but only if the district cannot make them up by using all its scheduled vacation days before the June Regents exams.

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

Next door

Districts near Mount Pleasant

District	Snow a winter	4 in mornings
Valhalla Union Free School DistrictValhalla	27.6 in	1.6
Pleasantville Union Free School DistrictPleasantville	27.6 in	1.6
Briarcliff Manor Union Free School DistrictBriarcliff Manor	27.6 in	1.6
Byram Hills Central School DistrictArmonk	27.6 in	1.6
Chappaqua Central School DistrictChappaqua	27.6 in	1.6
Elmsford Union Free School DistrictElmsford	27.6 in	1.6

The schools

4 schools

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

High

Westlake High School

Middle

Westlake Middle School

Elementary

Columbus Elementary School
Hawthorne Elementary School, Hawthorne

Questions

Mount Pleasant snow day questions

How much snow does Thornwood get?

What was the biggest snow day near Mount Pleasant?

How does the Mount Pleasant snow day predictor work?

How does New York handle snow days?

Can New York schools hold a remote day instead?

More winter

More for New York 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.New York winter forecastThe season ahead for New York: 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.