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Merrimack, New Hampshire, 3,544 students in 6 schools

Merrimack School District Snow Day Predictor

The odds of a closing or a delay on the next three school mornings in Merrimack, measured against Merrimack's own big snow morning of 7 inches.

The next three school mornings

Will Merrimack close tomorrow?

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

How Merrimack calls a snow day

The 2026 to 2027 calendar

  • First day September 2, 2026
  • Winter break Dec 24 to Jan 1
  • February break Feb 22 to Feb 26
  • Last day June 18, 2027
District calendar

Read from Merrimack’s own pages on October 8, 2026; the district site is sau26.org.

Ten winters of school mornings

Merrimack’s snow record

47.3inches of snow a winter
5.7school mornings a winter with 2 in of new snow or more
3with 4 in or more
7 ina big snow morning in Merrimack: the top tenth of snowy school mornings
2.9school mornings a winter at 0 F or colder
1Nov
9.1Dec
13.5Jan
13.4Feb
8.8Mar
Average snowfall by month, inches
  • Biggest day 18.3 in on March 14, 2018
  • Snowiest winter 2017 to 2018, 82.4 in
  • 6 in mornings 1.6 a winter
  • 1 in mornings 8.6 a winter

Measured at a NOAA weather station 5 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 New Hampshire rule

How New Hampshire counts a lost day

New Hampshire requires 180 days or the required hours: 450 in kindergarten, 945 in grades 1 to 6 and 990 in grades 7 to 12. Lost time must be rescheduled with added hours before a district can ask for a waiver of the hours requirement.

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

Next door

Districts near Merrimack

DistrictSnow a winter4 in morningsBuilt in days
Litchfield School DistrictLitchfield47.3 in3
Bedford School DistrictBedford51.3 in2.85
Londonderry School DistrictLondonderry51.3 in2.85
Amherst School DistrictAmherst51.8 in3.3
Hudson School DistrictHudson55.4 in2.53
Nashua School DistrictNashua49.9 in2.5
The schools

6 schools

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

High

  • Merrimack High School

Middle

  • Merrimack Middle School
  • James Mastricola Upper Elementary School

Elementary

  • Thorntons Ferry School
  • Reeds Ferry School
  • James Mastricola Elementary School
Questions

Merrimack snow day questions

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More winter

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