Why does Atlanta close for an inch of snow?

Because an inch on a bridged, hilly interstate network with a brine fleet of 13 tankers for the whole metro is enough to strand buses, and because Atlanta averages only 0.8 days a year with an inch or more, so nobody is practised at it. The meter's 1-inch Georgia threshold and its freezing-rain term capture both.

Do Georgia schools have to make up snow days?

Up to a point. State Board rule lets a local board decline to make up as many as four emergency-closure days without asking the state; beyond that the 180-day minimum applies and state funding is prorated for any shortfall.

Does a virtual day count as a school day in Georgia?

The state rule we could read does not say. Metro Atlanta districts called virtual learning days ahead of the 10 January 2025 storm while others simply closed, so it is a district decision. The meter scores the chance that buildings close either way.

Is ice or snow the bigger problem in Georgia?

Ice. Georgia's closures are mostly freezing rain and sleet on untreated secondary roads, which GDOT does not brine; its tankers work the interstates up to 24 hours ahead of a storm. The meter weighs each hour of freezing rain in your forecast as its own signal.

Snow day calculator Georgia

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.

Georgia schools usually close around 1 inches of overnight snow. Atlanta closes on an inch or on ice, and often the night before the forecast even arrives. The meter below opens on Atlanta; type your ZIP or town and it reads tonight's hourly forecast for your exact spot and scores it against the Georgia threshold.

How much snow it takes in Georgia

Atlanta closes on an inch, and often on the forecast of one. Hartsfield-Jackson averages 2.2 inches of snow a season, 0.8 days with an inch or more and 0.2 days with 3 inches or more; Augusta averages 0.8 inches. January is the snowiest month. The metro's problem is not depth but geometry: a million commuters on hilly, bridged interstates, suburban bus routes that start before dawn, and a brine fleet concentrated on the interstates with 13 tankers for the whole metro.

That is why the model's Georgia threshold is 1 inch and why freezing rain hours weigh so much. The January 2025 pattern was typical: on 10 January, Atlanta Public Schools and many metro districts closed in advance of snow and ice while others called virtual days; on 21 January snow began in the afternoon and metro schools closed again for the 22nd after the Weather Service widened its Winter Storm Warning to the city.

North Georgia's mountain counties see more snow and tolerate a little more; south of Macon the question is almost entirely about ice.

Georgia winter by the numbers

Station	Snow per season	Days with 1″+	Days with 3″+	Snowiest month
Atlanta	2.2″	0.8	0.2	Jan
Augusta	0.8″	0.3	0.0	Jan

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. NOAA publishes no 1991-2020 snowfall normal for Athens.

How closures are decided in Georgia

Georgia's local boards must schedule at least 180 school days or the equivalent, with a daily average of 4.5 hours of instruction in kindergarten to grade 3, 5 hours in grades 4 and 5 and 5.5 hours in grades 6 to 12 (State Board Rule 160-5-1-.02, implementing O.C.G.A. 20-2-168). A district that falls short takes a prorated cut in state funds, and a day only counts if students are present for at least half the required time, which rules out the two-hour early dismissal as a full day.

The forgiveness is built into the rule rather than the calendar: a local board may, without asking the State Board, elect not to make up as many as four additional emergency-closure days. We found no state rule on whether a virtual day counts toward the 180, although metro districts have used them since 2025; the choice is local. Each of the 180 regular districts' boards sets its own school day and year at a public meeting, and the closure call sits with the superintendent.

Minimum school year: 180 days or equivalent; 4.5 / 5 / 5.5 hours a day by grade (Rule 160-5-1-.02)
Forgiven closures: Up to 4 emergency days a local board may elect not to make up
Virtual weather days: No state rule found; metro districts use them at their own discretion
State plow fleet: 439 dump-truck units, 76,310 tons of salt, 1.95 million gallons of brine (GDOT)

Questions people ask

Why does Atlanta close for an inch of snow?: Because an inch on a bridged, hilly interstate network with a brine fleet of 13 tankers for the whole metro is enough to strand buses, and because Atlanta averages only 0.8 days a year with an inch or more, so nobody is practised at it. The meter's 1-inch Georgia threshold and its freezing-rain term capture both.
Do Georgia schools have to make up snow days?: Up to a point. State Board rule lets a local board decline to make up as many as four emergency-closure days without asking the state; beyond that the 180-day minimum applies and state funding is prorated for any shortfall.
Does a virtual day count as a school day in Georgia?: The state rule we could read does not say. Metro Atlanta districts called virtual learning days ahead of the 10 January 2025 storm while others simply closed, so it is a district decision. The meter scores the chance that buildings close either way.
Is ice or snow the bigger problem in Georgia?: Ice. Georgia's closures are mostly freezing rain and sleet on untreated secondary roads, which GDOT does not brine; its tankers work the interstates up to 24 hours ahead of a storm. The meter weighs each hour of freezing rain in your forecast as its own signal.

Sources

Georgia State Board of Education Rule 160-5-1-.02, school day and school year (archived copy) (read 2026-10-10)
Atlanta News First, districts cancel or go virtual ahead of the 10 Jan 2025 storm (read 2026-10-10)
WABE, metro Atlanta schools close another day, 22 Jan 2025 (read 2026-10-10)
GDOT, winter weather readiness at a glance (archived copy) (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, Atlanta and Augusta (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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