Snow Day Tomorrow? How to Tell Tonight and Get Ready

The tricky part is that tomorrow’s forecast keeps moving tonight. This page shows you how to read it hour by hour, which signals matter, when to check again, and how to plan for both answers so the morning isn’t a scramble.

The three signals that point to a snow day tomorrow

You don’t need a meteorology degree. Three things answer most of the question.

1. An active NWS alert

Go to weather.gov and enter your ZIP code. If a red or pink alert banner shows a Winter Storm Warning, Blizzard Warning or Ice Storm Warning for the morning, your odds are high. A Winter Weather Advisory means trouble but usually points to a delay rather than a full closure.

2. Snow or ice during bus hours

Buses in many districts start rolling around 6 a.m. If heavy snow or freezing rain is falling between about 4 a.m. and 8 a.m., crews can’t clear roads in time. Snow that ends at 10 p.m. gives plows all night.

3. Your area’s normal winter

Two inches can close every school in Atlanta and not a single one in Minneapolis. Compare tomorrow’s forecast with what your area usually handles. If the storm is big for your town, odds rise.

Signal tonight	Snow day tomorrow odds
No alert, light snow ending before midnight	Low
Winter Weather Advisory, 2–4 inches overnight	Medium; delay likely
Winter Storm Warning, heaviest snow 3–8 a.m.	High
Ice Storm Warning or freezing rain at bus time	High
Blizzard Warning or city travel ban	Very high
Extreme Cold Warning for the morning	Medium to high, depending on district

For a single number that combines these signals for your ZIP code, use our snow day calculator.

How to read tonight’s forecast

The forecast on your phone’s weather app is a summary. For a snow day tomorrow, you want the hour-by-hour detail.

1. Open weather.gov and search your city or ZIP code.
2. Read the alert banner at the top first.
3. Scroll to “Detailed Forecast.” Look at “Tonight” and the next day for snow totals and start times.
4. Open the “Hourly Weather Forecast” graph. It shows temperature, wind and precipitation chance by the hour. Look at the hours from midnight to 9 a.m.
5. Check the temperature line. If it sits right at 32°F during the morning, expect a mix of rain, sleet and freezing rain, which is harder to predict.
6. Look for the Area Forecast Discussion link. Local forecasters explain how confident they are, in plain notes written for other forecasters.

Snow totals vs. snowfall rate

A forecast of “4 to 7 inches” sounds the same whether it falls over 6 hours or 24. Rates of an inch an hour or more during the commute are what overwhelm plows. Look for wording like “heavy snow at times” or “snowfall rates of 1 to 2 inches per hour.”

The Winter Storm Severity Index

The NWS also publishes a Winter Storm Severity Index map that rates expected impacts from limited to extreme. If your area shows moderate or higher for the morning, that’s another strong hint.

A night-before timeline

Here’s a simple schedule that keeps you from refreshing every 10 minutes.

Time	What to do
6–8 p.m.	Check weather.gov alerts and run the calculator
8–9 p.m.	Look for early announcements; big storms sometimes get called now
10–11 p.m.	Check once more; late forecast updates often arrive in the evening
Before bed	Set an early alarm if odds are 50% or higher
5–6 a.m.	Check district texts, email and website for the final word

New York City Public Schools says it announces as early as possible before 5 a.m. Denver Public Schools aims for a 5 a.m. decision. Most districts follow a similar rhythm. If you’re checking in the morning instead, our snow day today guide is built for that moment.

When a forecast changes overnight

Sometimes you go to bed at 90% and wake up to a normal school day. Here’s why.

• The storm slowed down. Snow that arrives at noon instead of 4 a.m. usually means school opens, possibly with an early dismissal.
• Warm air won. The rain-snow line moved north, and you got slush instead of snow.
• The storm sped up. It ended by 2 a.m., and plows had hours to work.
• The district chose a delay. A two-hour delay lets the sun and plows do their work.
• The district went remote. Some districts, like NYC, hold class online instead of closing.

Districts read the latest forecast at 4 or 5 a.m., not the one you saw at 9 p.m. That’s why a late check matters.

Snow day odds by day of the week

The day matters more than people think.

• Monday: Weekend snow gives crews two days to clear roads. A storm arriving late Sunday night is the one to watch.
• Tuesday to Thursday: Normal odds, based on the forecast.
• Friday: Some superintendents are a little quicker to call it, since there’s a weekend to recover. That’s a tendency, not a rule.
• After a long break: Districts may be cautious if buses and buildings haven’t been checked in days.

Our calculator lets you pick a weekday, so you can check Monday’s odds on a Sunday afternoon.

Get ready tonight either way

The best plan is one that works for both answers.

If a snow day is likely

• Line up childcare or a work-from-home plan now
• Charge laptops and tablets in case your district switches to a remote day
• Find your child’s school login details
• Put boots, gloves and sleds by the door
• Check whether after-school activities, sports or games are also canceled

If school is likely open

• Lay out warm layers: hat, gloves and a waterproof jacket
• Leave extra time; roads and sidewalks may be slick
• Pack a spare pair of socks
• Confirm the bus is running on time

Kids waiting at a bus stop in dangerous cold need the most care. If an Extreme Cold Warning is out, cover exposed skin and keep the wait short.

Snow day superstitions

Every student knows at least one. None of them work, but they’re part of the fun, and kids have passed them down for decades.

• Wear your pajamas inside out (or backwards) to bed
• Put a spoon under your pillow or in the freezer
• Flush ice cubes down the toilet
• Run around the kitchen table a set number of times
• Put a white crayon on the windowsill

Sharing them on a snowy night is a tradition in many homes. Just keep the ice cubes to a few, and check the forecast too.

Watch: winter storm watch vs. warning

This FOX61 explainer covers the difference between a winter storm watch and a warning, which is the first thing to check the night before.

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