SnowDayMeter

Snow day calculator New Jersey

Chance of a snow day
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School

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

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

New Jersey schools usually close around 4 inches of overnight snow. Four inches overnight, less near the coast where ice and wind are the concern. The meter below opens on Newark; type your ZIP or town and it reads tonight's hourly forecast for your exact spot and scores it against the New Jersey threshold.

How much snow it takes in New Jersey

New Jersey closes at about 4 inches, less near the shore. Newark averages 31.5 inches a season, 3.6 days with 3 inches or more and 2 days with 5 inches or more; Trenton 26.6 inches; Atlantic City 17.4. February is the snowiest month across the state. Inland, a 4-inch night usually means buses on unploughed township roads at 6:30; on the shore it is wind and ice off the ocean that close schools on less.

The winter of 2026 gave Newark both ends of the scale. The district closed on Monday 26 January ahead of a storm forecast at a foot or more, and again on 23 February after a blizzard left roughly 27 inches on the city. Across South Jersey, districts converted holidays and in-service days into make-up days afterwards; Haddon Heights used its only built-in emergency closing day.

What New Jersey cannot do is turn a single snow day into a remote day, and that is the state's defining rule.

New Jersey winter by the numbers

StationSnow per seasonDays with 1″+Days with 3″+Snowiest month
Newark31.5″7.13.6Feb
Atlantic City17.4″4.61.8Feb
Trenton26.6″6.73.0Feb

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 New Jersey

New Jersey requires 180 days of instruction (N.J.S.A. 18A:7F-9), and a day in session must run at least four hours excluding recess and lunch (N.J.A.C. 6A:32-8.3). The same regulation says a day closed for inclement weather is not a day in session unless it meets the virtual-instruction conditions in N.J.A.C. 6A:32-13, and those conditions do not include weather. Under P.L. 2020, c. 27, a district may count virtual or remote instruction toward the 180 only when it is closed for more than three consecutive school days because of a declared state of emergency, a declared public health emergency or a health-agency directive. When the rule was adopted in 2021, the Department of Education expressly declined a request to allow remote days for inclement weather or for closures shorter than three days.

So a snow day in New Jersey is a real closure, made up from the calendar or by cutting into breaks, and districts guard their built-in emergency days accordingly. After the February 2026 blizzard the Newark Teachers Union called for loosening the law. We found no state rule naming who decides a closure; it is the chief school administrator of each of the 562 regular districts, the most of any state in the Northeast.

Minimum school year
180 days of at least 4 hours (N.J.S.A. 18A:7F-9; N.J.A.C. 6A:32-8.3)
Remote snow days
Not allowed: remote days count only for emergency closures over 3 consecutive days (P.L. 2020, c. 27)
Weather closures
Not a day in session; made up from the calendar
Regular districts
562 (NCES, 2021-22)

Questions people ask

Can New Jersey schools hold virtual learning on a snow day?
Not in a way that counts. State rules only let remote instruction count toward the 180 days when a district is closed for more than three consecutive days under a declared emergency or health directive, and the Department of Education refused in 2021 to extend that to inclement weather. A snow day is a closure to be made up.
How do New Jersey districts make up snow days?
From the calendar. Most build one or more emergency closing days in, then convert holidays or in-service days, then shorten spring break, as South Jersey districts did after the January 2026 storm. There is no state forgiveness of weather days that we could find.
Does Newark close on 4 inches?
Often, when the snow is still falling at bus time or ice is in the mix. Newark averages 3.6 days a year with 3 inches or more and 2 days with 5 inches or more. The January and February 2026 closures were for far larger storms, forecast at a foot and measured at 27 inches.
Why does the shore close on less snow than the interior?
Wind, ice and freezing spray on exposed roads. Atlantic City averages only 1.8 days a year with 3 inches or more, so shore districts are less practised at snow and more exposed to a coastal storm's wind. The meter scores wind over 35 mph with snow on the ground and each hour of freezing rain separately.

Sources

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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