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Kennebunk, Maine, 2,401 students in 6 schools

Regional School Unit 21 Snow Day Predictor

The odds of a closing or a delay on the next three school mornings in Regional School Unit 21, measured against Regional School Unit 21's own big snow morning of 5.5 inches.

The next three school mornings

Will Regional School Unit 21 close tomorrow?

Reading the National Weather Service forecast for the overnight and the bus hours in Kennebunk.
The Regional School Unit 21 playbook

How Regional School Unit 21 calls a snow day

Making up a lost day

The last day moves later by the number of snow days used.

“THE CLOSING DATE FOR THE SCHOOL YEAR WILL BE ADJUSTED TO REFLECT THE ACTUAL NUMBER OF SNOW DAYS USED.”
Source

The 2026 to 2027 calendar

  • First day September 1, 2026
  • Winter break Dec 23 to Jan 1
  • February break Feb 15 to Feb 19
  • Last day June 14, 2027
District calendar

Read from Regional School Unit 21’s own pages on October 8, 2026; the district site is rsu21.net.

Ten winters of school mornings

Regional School Unit 21’s snow record

56.9inches of snow a winter
6.4school mornings a winter with 2 in of new snow or more
3.6with 4 in or more
5.5 ina big snow morning in Regional School Unit 21: the top tenth of snowy school mornings
1.8Nov
12.5Dec
17.5Jan
12.8Feb
10.6Mar
Average snowfall by month, inches
  • Biggest day 17 in on March 14, 2018
  • Snowiest winter 2017 to 2018, 99.4 in
  • 6 in mornings 1.3 a winter
  • 1 in mornings 9.8 a winter

Measured at a NOAA weather station 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 Maine rule

How Maine counts a lost day

Maine requires a 180 day school year with at least 175 days of instruction. The Commissioner may waive the minimum days on a school board's written application, but only after the district has tried every reasonable way to make the days up.

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

Next door

Districts near Regional School Unit 21

DistrictSnow a winter4 in morningsBuilt in days
Wells-Ogunquit Community School DistrictWells56.9 in3.6
Biddeford Public SchoolsBiddeford48.7 in3.3
Saco Public SchoolsSaco48.7 in3.3
Sanford Public SchoolsSanford63.2 in3.7
School Administrative District 57Waterboro63.2 in3.7
School Administrative District 60North Berwick56 in35
The schools

6 schools

Every school in Regional School Unit 21 follows the district’s call: one closing covers them all.

High

  • Kennebunk High School

Middle

  • Middle School of the Kennebunks

Elementary

  • Kennebunk Elementary School
  • Sea Road School
  • Mildred L Day School, Arundel
  • Kennebunkport Consolidated Sch, Kennebunkport
Questions

Regional School Unit 21 snow day questions

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More winter

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