Snow Day Calculator for Maryland
Will schools in Maryland be closed tomorrow?
Tomorrow by city
| City | Closure | Link |
|---|---|---|
| BaltimoreBaltimore City Public Schools | — | — |
Chance for each city's main ZIP code. Your district may differ: enter your ZIP above.
Tomorrow by county
- 0–29%Unlikely
- 30–59%Possible
- 60–79%Likely
- 80–95%Very likely
- No school
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Snow by hour
From the National Weather Service forecast, updated hourly. Estimate only. Your district makes the call.
How much snow Maryland gets
| Place | Population | Snow a year | Days 3+ in. |
|---|---|---|---|
| Baltimore | 568,271 | 19 in. | 2.0 |
| Frederick | 89,537 | 31 in. | 3.5 |
| Gaithersburg | 70,686 | 33 in. | 3.6 |
| Rockville | 68,417 | 19 in. | 2.6 |
| Bowie | 58,421 | 16 in. | 1.8 |
NOAA NCEI U.S. Climate Normals 1991–2020, nearest station at a similar elevation. Population: U.S. Census Bureau, 2024 estimates. Across Maryland, yearly snowfall ranges from 3 to 171 inches.
Cities in Maryland
School districts (20)
- Allegany County Public Schools
- Anne Arundel County Public Schools
- Baltimore City Public Schools
- Baltimore County Public Schools
- Calvert County Public Schools
- Caroline County Public Schools
- Carroll County Public Schools, MD
- Cecil County Public Schools
- Charles County Public Schools
- Dorchester County Public Schools
- Frederick County Public Schools, MD
- Garrett County Public Schools
- Harford County Public Schools
- Howard County Public Schools
- Montgomery County Public Schools, MD
- Prince George's County Public Schools
- Queen Anne's County Public Schools
- St. Mary's County Public Schools
- Talbot County Public Schools
- Washington County Public Schools
Maryland snow day questions
Will schools in Maryland be closed tomorrow?
Enter your ZIP code above for your district's chance of a closure or delay tomorrow, or pick a city below. Each district decides for itself; the calculator estimates the chance from tonight's National Weather Service forecast and updates hourly from the afternoon until morning.
How much snow falls in Maryland?
It depends a lot on where you are: average yearly snowfall across Maryland ranges from 3 to 171 inches (NOAA 1991–2020 normals at weather stations near 477 ZIP codes). Among the largest places, Gaithersburg averages 33 inches.
How much snow closes schools in Maryland?
It varies by district and by how often each area gets snow. In the snowiest parts of Maryland, closures usually take several inches overnight; in places that rarely see snow, an inch or two can close schools. The calculator scales each storm by the local NOAA normal for your ZIP.
Guides
- How much snow cancels school?
From one inch in Atlanta to a foot in Buffalo: what it takes in every state, with NOAA data.
- What time are snow days announced?
When districts decide, how they tell families, and when to check the calculator.
- Signs of a snow day tomorrow
The forecast signs that really matter, and the folklore that doesn't.