Cornwall on Hudson, New York, 3,028 students in 5 schools

Cornwall Central School District Snow Day Predictor

Q: How much snow does Cornwall on Hudson get?

About 28.3 inches a winter at a NOAA weather station 12.2 miles away, averaged over 9 winters. Between December 1 and March 31 that brings 3.6 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 Cornwall?

14 inches on January 26, 2026, the largest single day at a NOAA weather station 12.2 miles away in 9 winters. The snowiest winter was 2025 to 2026, with 53.1 inches.

Q: How does the Cornwall snow day predictor work?

It reads the National Weather Service forecast for Cornwall on Hudson 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 Cornwall’s own big snow morning: 6 inches, the top tenth of snowy weekday mornings at a NOAA weather station 12.2 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 Cornwall, measured against Cornwall's own big snow morning of 6 inches.

The next three school mornings

Will Cornwall close tomorrow?

Reading the National Weather Service forecast for the overnight and the bus hours in Cornwall on Hudson.

Ten winters of school mornings

Cornwall’s snow record

28.3inches of snow a winter

3.6school mornings a winter with 2 in of new snow or more

1.6with 4 in or more

6 ina big snow morning in Cornwall: the top tenth of snowy school mornings

1.8school mornings a winter at 0 F or colder

1Nov

5Dec

7Jan

10Feb

4.8Mar

Average snowfall by month, inches

Biggest day 14 in on January 26, 2026
Snowiest winter 2025 to 2026, 53.1 in
6 in mornings 1 a winter
1 in mornings 5.3 a winter

Measured at a NOAA weather station 12.2 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 Cornwall

District	Snow a winter	4 in mornings	Built in days
Newburgh City School DistrictNewburgh	30.6 in	1.3
Beacon City School DistrictBeacon	30.6 in	1.3
Highland Falls Central School DistrictHighland Falls	28.3 in	1.6
Washingtonville Central School DistrictWashingtonville	28.3 in	1.6
Monroe-Woodbury Central School DistrictCentral Valley	28.3 in	1.6	5
Putnam Valley Central School DistrictPutnam Valley	28.3 in	1.6

The schools

5 schools

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

High

Cornwall Central High School, New Windsor

Middle

Cornwall Middle School, Cornwall

Elementary

Cornwall Elementary School, Cornwall
Cornwall-on-Hudson Elementary School
Willow Avenue Elementary School, Cornwall

Questions

Cornwall snow day questions

How much snow does Cornwall on Hudson get?

What was the biggest snow day near Cornwall?

How does the Cornwall 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.