Sumner County School District Snow Day Predictor

Q: When is the last day of school for Sumner?

May 25, 2027, on the district’s 2026 to 2027 calendar.

Q: How much snow does Gallatin get?

About 4.1 inches a winter at a NOAA weather station 7.4 miles away, averaged over 10 winters. Between December 1 and March 31 that brings 0.9 weekday mornings a year with 2 inches of new snow or more, and 0.1 with 4 inches or more.

Q: What was the biggest snow day near Sumner?

7 inches on January 7, 2022, the largest single day at a NOAA weather station 7.4 miles away in 10 winters. The snowiest winter was 2021 to 2022, with 13.5 inches.

Q: How does the Sumner snow day predictor work?

It reads the National Weather Service forecast for Gallatin 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 Sumner’s own big snow morning: 3.3 inches, the top tenth of snowy weekday mornings at a NOAA weather station 7.4 miles away.

The next three school mornings

Will Sumner close tomorrow?

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

The Sumner playbook

How Sumner calls a snow day

The 2026 to 2027 calendar

First day August 10, 2026
Winter break Dec 21 to Jan 4
Last day May 25, 2027

District calendar

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

Ten winters of school mornings

Sumner’s snow record

4.1inches of snow a winter

0.9school mornings a winter with 2 in of new snow or more

0.1with 4 in or more

3.3 ina big snow morning in Sumner: the top tenth of snowy school mornings

0.5school mornings a winter at 0 F or colder

0Nov

0.3Dec

2.4Jan

1.1Feb

0.4Mar

Average snowfall by month, inches

Biggest day 7 in on January 7, 2022
Snowiest winter 2021 to 2022, 13.5 in
6 in mornings 0.1 a winter
1 in mornings 1.3 a winter

Measured at a NOAA weather station 7.4 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 Tennessee rule

How Tennessee counts a lost day

Tennessee requires at least 180 days of classroom instruction, with a 6.5 hour instructional day. A district that runs a half hour longer than the required 6.5 hour day all year banks the extra time as up to 13 stockpile days, which can cover days lost to dangerous or extreme weather.

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

Next door

Districts near Sumner

District	Snow a winter	4 in mornings	Built in days
Lebanon Special School DistrictLebanon	4.1 in	0.2
Wilson County School DistrictLebanon	4.1 in	0.2	10
Macon County School DistrictLafayette	4.1 in	0.1
Metropolitan Nashville Public School DistrictNashville	4.1 in	0.2	7
Robertson County School DistrictSpringfield	3.9 in	0.1
Smith County School DistrictCarthage	4.2 in	0.2

The schools

52 schools, the 40 largest here

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

High

Gallatin Senior High School
Beech Sr High School, Hendersonville
Hendersonville High School, Hendersonville
Portland High School, Portland
Station Camp High School
Liberty Creek High School
White House High School, White House
Westmoreland High School, Westmoreland

Middle

Station Camp Middle School
White House Middle School, White House
Rucker Stewart Middle
Joe Shafer Middle School
Liberty Creek Middle School
Knox Doss Middle School at Drakes Creek, Hendersonville
T. W. Hunter Middle School, Hendersonville
Robert E Ellis Middle, Hendersonville
Portland West Middle School, Portland
V G Hawkins Middle School, Hendersonville
Westmoreland Middle School, Westmoreland
Portland East Middle School, Portland

Elementary

Station Camp Elementary
Jack Anderson Elementary, Hendersonville
Dr. William Burrus Elementary at Drakes Creek, Hendersonville
Vena Stuart Elementary
Benny C. Bills Elementary School
Harold B. Williams Elementary School, White House
Liberty Creek Elementary
Union Elementary School
Guild Elementary
Howard Elementary
Portland Gateview Elementary School, Portland
Madison Creek Elementary, Goodlettsville
Nannie Berry Elementary, Hendersonville
Westmoreland Elementary, Westmoreland
Indian Lake Elementary, Hendersonville
George A Whitten Elementary, Hendersonville
Watt Hardison Elementary, Portland
Walton Ferry Elementary, Hendersonville
Gene W. Brown Elementary, Hendersonville

Other schools

Merrol Hyde Magnet School, Hendersonville

Questions

Sumner snow day questions

When is the last day of school for Sumner?

How much snow does Gallatin get?

What was the biggest snow day near Sumner?

How does the Sumner snow day predictor work?

How does Tennessee handle snow days?

More winter

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