Why is Montana's threshold 8 inches when so much falls?

Because depth is not what closes school there. Billings sees 6 days a year with 3 inches or more and Great Falls 6.1, almost all of them school days. The threshold is high so that the cold and wind terms, which carry the real decision in Montana, are not drowned out by ordinary snow.

How cold does it get before Montana schools close?

There is no state figure; each board of trustees decides. The 18 February 2025 closures and delays on the Hi-Line came with forecast wind chills in the minus 30s to minus 50s. For a clear, bitterly cold night, the cold-day calculator on this site is the better tool.

Do Montana schools make up snow days?

Mostly. After a board-declared emergency closure the district must make up at least 75 percent of the lost hours before the trustees can write the rest off, and one closure day a year is excused. The year is counted in hours, so a make-up can be added minutes rather than a whole day.

Are there remote learning days for weather in Montana?

We could not find a state rule allowing one, and the Office of Public Instruction's site was unreachable when we checked on 10 October 2026. Ask your district; the meter scores whether buildings close, not how the hours are recovered.

Snow day calculator Montana

Chance of a snow day

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Best time to check

The evening before, after 9 pm: The evening model runs are in by then and the forecast here refreshes every 30 minutes. A number read at 6 pm can move by several inches of snow before midnight.
The morning of, 5 to 7 am: The strip above shades 4 to 7 am. Snow still falling in those hours lands on the commute, so the model counts it extra, and most districts have decided by the time the buses roll at 7.

When districts actually decide

Portland Public Schools, Oregon publishes its closure decision no later than 5 am (read 10 Oct 2026)
Omaha Public Schools announced the 23 January 2026 cold closure at 5:50 pm the evening before (read 10 Oct 2026)
Little Rock School District announced a two-day closure the afternoon before the 9 January 2025 storm (read 10 Oct 2026)
Minnesota e-learning days must be announced at least two hours before the normal start time, by statute (read 10 Oct 2026)

Every district sets its own cut-off; these are published examples, not a rule.

Montana schools usually close around 8 inches of overnight snow. Closures are rare and usually about wind chill and blowing snow, not totals. The meter below opens on Billings; type your ZIP or town and it reads tonight's hourly forecast for your exact spot and scores it against the Montana threshold.

How much snow it takes in Montana

Montana does not close for snow depth. Billings averages 57.4 inches a season and 18.1 days with an inch or more, Great Falls 66.1 inches, Missoula 43, Helena 37.2, and the school buses run through nearly all of it. The snow also comes year-round at the edges: Great Falls' normals show measurable snow in every month but July. The model's 8-inch threshold is deliberately high because an 8-inch night on its own rarely does more than delay the buses.

What closes Montana schools is the wind and the cold behind an arctic front. On 18 February 2025, with air temperatures forecast in the minus 10s to minus 30s and wind chills in the minus 50s on the Hi-Line, Valier closed, Havre went to a two-hour delay and Browning to a one-hour delay. The meter scores wind chill at bus time and any Blizzard or Extreme Cold Warning as separate terms, and in Montana they carry the decision more often than the snow term does.

Montana winter by the numbers

Station	Snow per season	Days with 1″+	Days with 3″+	Snowiest month
Billings	57.4″	18.1	6.0	Jan
Great Falls	66.1″	20.3	6.1	Feb/Mar
Missoula	43.0″	13.8	3.8	Dec
Helena	37.2″	12.5	3.1	Dec

1991-2020 climate normals for the airport or first-order station in each city, read 2026-10-10 from the NOAA NCEI U.S. Climate Normals. “Days with 3″+” is the average number of calendar days a year with at least 3 inches of new snow.

How closures are decided in Montana

Montana's school year is measured in hours, not days: 720 hours for grades 1 to 3, 1,080 for grades 4 to 12, and 360 or 720 for half- or full-day kindergarten (MCA 20-1-301), with 1,050 allowed for graduating seniors. A district that falls short has its state BASE aid cut at twice an hourly rate, so lost time is not free.

The emergency rule is specific. When the board of trustees declares an emergency closure, the district must make up at least 75 percent of the lost instruction time before the trustees can resolve that a reasonable effort was made and let the remainder go; one closure day a year is excused outright (MCA 20-9-806). We found no state rule that lets a remote day substitute for a weather closure, and the Office of Public Instruction's site could not be reached when we checked. With 397 regular districts, many of them single-school rural systems, the closure call sits with each board of trustees.

Minimum school year: 720 hours grades 1-3, 1,080 hours grades 4-12 (MCA 20-1-301)
Emergency closures: Declared by the board of trustees; 75 percent of lost time made up, one day a year excused (MCA 20-9-806)
Remote snow days: No state rule found
Regular districts: 397 (NCES, 2021-22)

Questions people ask

Why is Montana's threshold 8 inches when so much falls?: Because depth is not what closes school there. Billings sees 6 days a year with 3 inches or more and Great Falls 6.1, almost all of them school days. The threshold is high so that the cold and wind terms, which carry the real decision in Montana, are not drowned out by ordinary snow.
How cold does it get before Montana schools close?: There is no state figure; each board of trustees decides. The 18 February 2025 closures and delays on the Hi-Line came with forecast wind chills in the minus 30s to minus 50s. For a clear, bitterly cold night, the cold-day calculator on this site is the better tool.
Do Montana schools make up snow days?: Mostly. After a board-declared emergency closure the district must make up at least 75 percent of the lost hours before the trustees can write the rest off, and one closure day a year is excused. The year is counted in hours, so a make-up can be added minutes rather than a whole day.
Are there remote learning days for weather in Montana?: We could not find a state rule allowing one, and the Office of Public Instruction's site was unreachable when we checked on 10 October 2026. Ask your district; the meter scores whether buildings close, not how the hours are recovered.

Sources

MCA 20-1-301, school fiscal year and pupil-instruction hours (read 2026-10-10)
MCA 20-9-806, unforeseen emergency closures and make-up (read 2026-10-10)
KRTV, school delays and closures for extreme cold, 18 Feb 2025 (read 2026-10-10)
NCES Digest table 214.30, regular school districts by state, 2021-22 (read 2026-10-10)
NOAA NCEI U.S. Climate Normals 1991-2020, Billings, Great Falls, Missoula and Helena (read 2026-10-10)

The closure threshold itself is our model's estimate from typical district practice, not an official figure. Districts, not states, make the call. The model page shows every term.

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