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Middlebury, Vermont, 1,752 students in 9 schools

Addison Central Supervisory District Snow Day Predictor

The odds of a closing or a delay on the next three school mornings in Addison, measured against Addison's own big snow morning of 4.7 inches.

The next three school mornings

Will Addison close tomorrow?

Reading the National Weather Service forecast for the overnight and the bus hours in Middlebury.
The Addison playbook

How Addison calls a snow day

How families hear

By the district website and local TV.

“Information regarding school cancellations will also be posted to the ACSD and MUHS websites. You may also refer to one of the following TV stations for information:”
MUHS 2026-2027 Student/Parent Handbook (School Cancellations)

Making up a lost day

Each unscheduled full-day closing adds one day in June after the anticipated June 10, 2027 last day.

“*For every unscheduled full day of closing , one day will be added to the June calendar”
Source

The 2026 to 2027 calendar

  • First day August 26, 2026
  • Winter break Dec 24 to Jan 1
  • February break Feb 22 to Feb 26
  • Last day June 10, 2027
District calendar

Read from Addison’s own pages on October 8, 2026; the district site is acsdvt.org.

Ten winters of school mornings

Addison’s snow record

61.5inches of snow a winter
6.4school mornings a winter with 2 in of new snow or more
2.8with 4 in or more
4.7 ina big snow morning in Addison: the top tenth of snowy school mornings
11.3school mornings a winter at 0 F or colder
4.2Nov
11.1Dec
14.4Jan
17.8Feb
11.5Mar
Average snowfall by month, inches
  • Biggest day 16 in on March 15, 2017
  • Snowiest winter 2021 to 2022, 73.3 in
  • 6 in mornings 1.4 a winter
  • 1 in mornings 11.2 a winter

Measured at a NOAA weather station 4.2 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.

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The Vermont rule

How Vermont counts a lost day

Vermont requires at least 175 student attendance days a year, with the school board setting the length of the day. A school closed for a cause beyond the board's control may petition the State Board for a waiver, filed within 10 days of each closing and by June 15; if granted the district is treated as having met the requirement.

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

Next door

Districts near Addison

DistrictSnow a winter4 in mornings
Mt. Abraham Unified School DistrictBristol108.1 in4.8
Rutland Northeast Supervisory UnionBrandon82.4 in4.9
Harwood Unified Union Supervisory DistrictWaitsfield95.4 in3.7
Champlain Valley Supervisory DistrictShelburne63.3 in1.9
Slate Valley Unified Union School DistrictFair Haven57.8 in2.9
Rutland City Supervisory DistrictRutland75.6 in3
The schools

9 schools

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

High

  • Middlebury Union High School

Middle

  • Middlebury Union Middle School

Elementary

  • Middlebury ID #4 School
  • Bingham Memorial School, Cornwall
  • Shoreham Elementary School, Shoreham
  • Bridport Central School, Bridport
  • Salisbury Community School, Salisbury
  • Weybridge Elementary School
  • Ripton Elementary School, Ripton
Questions

Addison snow day questions

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More winter

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