Griswold, Connecticut, 1,775 students in 4 schools

Griswold School District Snow Day Predictor

Q: How much snow does Griswold get?

About 25 inches a winter at a NOAA weather station 2.7 miles away, averaged over 10 winters. Between December 1 and March 31 that brings 2.6 weekday mornings a year with 2 inches of new snow or more, and 1.4 with 4 inches or more.

Q: What was the biggest snow day near Griswold?

13 inches on March 13, 2018, the largest single day at a NOAA weather station 2.7 miles away in 10 winters. The snowiest winter was 2025 to 2026, with 51.1 inches.

Q: How does the Griswold snow day predictor work?

It reads the National Weather Service forecast for Griswold 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 Griswold’s own big snow morning: 7.3 inches, the top tenth of snowy weekday mornings at a NOAA weather station 2.7 miles away.

Q: Can Connecticut schools hold a remote day instead?

A remote learning day counts as an actual school session if it meets the Commissioner's remote learning standards; the statute sets no cap.

The odds of a closing or a delay on the next three school mornings in Griswold, measured against Griswold's own big snow morning of 7.3 inches.

The next three school mornings

Will Griswold close tomorrow?

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

Ten winters of school mornings

Griswold’s snow record

25inches of snow a winter

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

1.4with 4 in or more

7.3 ina big snow morning in Griswold: the top tenth of snowy school mornings

0.5Nov

4Dec

7.6Jan

8.5Feb

4.1Mar

Average snowfall by month, inches

Biggest day 13 in on March 13, 2018
Snowiest winter 2025 to 2026, 51.1 in
6 in mornings 0.9 a winter
1 in mornings 4 a winter

Measured at a NOAA weather station 2.7 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 Connecticut rule

How Connecticut counts a lost day

Connecticut requires at least 180 days and 900 hours of actual school work, counting no more than 7 hours a day.

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

Next door

Districts near Griswold

District	Snow a winter	4 in mornings
Plainfield School DistrictPlainfield	25 in	1.4
Norwich School DistrictNorwich	24.4 in	1.3
Ledyard School DistrictLedyard	17 in	0.7
Montville School DistrictOakdale	24.4 in	1.3
Groton School DistrictMystic	17 in	0.7
Windham School DistrictWillimantic	32.2 in	2.3

The schools

4 schools

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

High

Griswold High School
Griswold Soule Street Academy, Jewett City

Middle

Griswold Middle School

Elementary

Griswold Elementary School

Questions

Griswold snow day questions

How much snow does Griswold get?

What was the biggest snow day near Griswold?

How does the Griswold snow day predictor work?

How does Connecticut handle snow days?

Can Connecticut schools hold a remote day instead?

More winter

More for Connecticut 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.Connecticut winter forecastThe season ahead for Connecticut: 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.