Williamstown, New Jersey, 5,746 students in 6 schools

Monroe Township School District Snow Day Predictor

Q: How much snow does Williamstown get?

About 17.7 inches a winter at a NOAA weather station 8.7 miles away, averaged over 9 winters. Between December 1 and March 31 that brings 2.6 weekday mornings a year with 2 inches of new snow or more, and 1.2 with 4 inches or more.

Q: What was the biggest snow day near Monroe Township School District?

17 inches on February 23, 2026, the largest single day at a NOAA weather station 8.7 miles away in 9 winters. The snowiest winter was 2017 to 2018, with 35 inches.

Q: Does Monroe Township School District get more snow days than other New Jersey districts?

Monroe Township School District averages 1.2 weekday mornings a winter with 4 inches of new snow or more, more than 53 percent of the 486 New Jersey districts with a station record.

Q: How does the Monroe Township School District snow day predictor work?

It reads the National Weather Service forecast for Williamstown 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 Monroe Township School District’s own big snow morning: 6.3 inches, the top tenth of snowy weekday mornings at a NOAA weather station 8.7 miles away.

The odds of a closing or a delay on the next three school mornings in Monroe Township School District, measured against Monroe Township School District's own big snow morning of 6.3 inches.

The next three school mornings

Will Monroe Township School District close tomorrow?

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

Ten winters of school mornings

Monroe Township School District’s snow record

17.7inches of snow a winter

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

1.2with 4 in or more

6.3 ina big snow morning in Monroe Township School District: the top tenth of snowy school mornings

More 4 inch school mornings than 53% of the 486 New Jersey districts with a station record.

0.3Nov

2.1Dec

7Jan

6.2Feb

2.1Mar

Average snowfall by month, inches

Biggest day 17 in on February 23, 2026
Snowiest winter 2017 to 2018, 35 in
6 in mornings 0.6 a winter
1 in mornings 3.4 a winter

Measured at a NOAA weather station 8.7 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 Jersey rule

How New Jersey counts a lost day

New Jersey requires at least 180 days of school, or the district loses state aid.

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

Next door

Districts near Monroe Township School District

District	Snow a winter	4 in mornings
Winslow Township School DistrictAtco	12.3 in	0.5
Washington Township School DistrictSewell	16.9 in	0.9
Black Horse Pike Regional School DistrictBlackwood	16.9 in	0.9
Hammonton Town School DistrictHammonton	12.3 in	0.5
Lindenwold Borough School DistrictLindenwold	16.9 in	0.9
Gloucester Township School DistrictBlackwood	16.9 in	0.9

The schools

6 schools

Every school in Monroe Township School District follows the district’s call: one closing covers them all.

High

Williamstown High School

Middle

Williamstown Middle School

Elementary

Oak Knoll Elementary School
Radix Elementary
Holly Glen Elementary School
Whitehall Elementary School

Questions

Monroe Township School District snow day questions

How much snow does Williamstown get?

What was the biggest snow day near Monroe Township School District?

Does Monroe Township School District get more snow days than other New Jersey districts?

How does the Monroe Township School District snow day predictor work?

How does New Jersey handle snow days?

More winter

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