Upper Darby School District Snow Day Predictor

Q: Does Upper Darby switch to remote learning on a snow day?

It can. Upper Darby has Flexible Instructional Days in its winter plan, up to 5 a year. When a closing gets likely, the morning here reads "Snow day or remote day".

Q: How long is a delayed start in Upper Darby?

2 hours: on a delay morning every school starts that much later.

Q: When is the last day of school for Upper Darby?

June 15, 2027, on the district’s 2026 to 2027 calendar.

Q: How much snow does Upper Darby get?

About 14.9 inches a winter at a NOAA weather station 7.1 miles away, averaged over 10 winters. Between December 1 and March 31 that brings 1.7 weekday mornings a year with 2 inches of new snow or more, and 0.7 with 4 inches or more.

Q: What was the biggest snow day near Upper Darby?

9.3 inches on January 25, 2026, the largest single day at a NOAA weather station 7.1 miles away in 10 winters. The snowiest winter was 2025 to 2026, with 30.1 inches.

Q: How does the Upper Darby snow day predictor work?

It reads the National Weather Service forecast for Upper Darby through the night and the 5 to 8 am bus run, adds winter alerts and the Winter Storm Severity Index, and measures the snow against Upper Darby’s own big snow morning: 4.2 inches, the top tenth of snowy weekday mornings at a NOAA weather station 7.1 miles away.

The next three school mornings

Will Upper Darby close tomorrow?

Reading the National Weather Service forecast for the overnight and the bus hours in Upper Darby.

The Upper Darby playbook

How Upper Darby calls a snow day

A 2 hour delay

On a delay morning every school starts 2 hours late.

“If Upper Darby public schools open on a delayed start schedule (typically a 2 hour delay),all private and charter school buses will pick up their students on a delayed schedule as well.”

Delay schedule

Flexible Instructional Days

Upper Darby has Flexible Instructional Days in its winter plan, up to 5 a year.

“Anticipate that FID days will be used in place of snow days.”

Source

Making up a lost day

No make-up dates are set; closings that take the year below the state minimum are added to the calendar at the School Board's discretion.

“*Any emergency school closing dates that bring the total number of student days or hours below the state minimum of 180 days or 450 Kindergarten hours, 900 elementary hours, and 990 secondary hours, will be added to the calendar”

Source

The 2026 to 2027 calendar

First day August 31, 2026
Winter break Dec 24 to Jan 1
Last day June 15, 2027

District calendar

Read from Upper Darby’s own pages on October 8, 2026; the district site is upperdarbysd.org.

Ten winters of school mornings

Upper Darby’s snow record

14.9inches of snow a winter

1.7school mornings a winter with 2 in of new snow or more

0.7with 4 in or more

4.2 ina big snow morning in Upper Darby: the top tenth of snowy school mornings

0school mornings a winter at 0 F or colder

0.4Nov

2.1Dec

5.2Jan

4.6Feb

2.7Mar

Average snowfall by month, inches

Biggest day 9.3 in on January 25, 2026
Snowiest winter 2025 to 2026, 30.1 in
6 in mornings 0.4 a winter
1 in mornings 2.8 a winter

Measured at a NOAA weather station 7.1 miles away. Mornings are the 7 am snow reading on a weekday from December 1 through March 31, over the ten winters from 2016 to 2017 through 2025 to 2026, from NOAA GHCN Daily.

The Pennsylvania rule

How Pennsylvania counts a lost day

Pennsylvania requires either 180 days, or hours: 900 for kindergarten through grade 6 and 990 for grades 7 to 12, as the district chooses. The state forgives no days; districts are expected to build make-up days into the calendar for closures beyond any Flexible Instructional Days.

The Pennsylvania rules in the agency’s own words, and every Pennsylvania district

Next door

Districts near Upper Darby

District	Snow a winter	4 in mornings
William Penn School DistrictLansdowne	14.9 in	0.7
Haverford Township School DistrictHavertown	12.7 in	0.8
Lower Merion School DistrictArdmore	12.7 in	0.8
Springfield School DistrictSpringfield	14.9 in	0.7
Interboro School DistrictGlenolden	14.9 in	0.7
Southeast Delco School DistrictFolcroft	14.9 in	0.7

The schools

13 schools

Every school in Upper Darby follows the district’s call: one closing covers them all.

High

Upper Darby SHS, Drexel Hill

Middle

Beverly Hills MS
Drexel Hill MS, Drexel Hill

Elementary

Highland Park El Sch
Bywood El Sch
Upper Darby Kdg Ctr, Drexel Hill
Hillcrest El Sch, Drexel Hill
Garrettford El Sch, Drexel Hill
Aronimink El Sch, Drexel Hill
Westbrook Park El Sch, Clifton Heights
Stonehurst Hills El Sch
Primos El Sch, Primos
Charles Kelly El Sch, Drexel Hill

Questions

Upper Darby snow day questions

Does Upper Darby switch to remote learning on a snow day?

How long is a delayed start in Upper Darby?

When is the last day of school for Upper Darby?

How much snow does Upper Darby get?

What was the biggest snow day near Upper Darby?

How does the Upper Darby snow day predictor work?

How does Pennsylvania handle snow days?

More winter

More for Pennsylvania snow days

Snow day predictorClosing and delay odds for any ZIP, with the snowiest districts in the country.Snow depth mapHow much snow is on the ground right now, measured, across the country.First snow datesWhen the first measurable snow usually lands where you live.Frozen pipesThe nights cold enough to freeze a pipe, and what to do before one.Snow plow trackerWhere the plows are during a storm, city by city.Pennsylvania winter forecastThe season ahead for Pennsylvania: snowfall, cold and the first snow.

A residential street under deep snow on a bright blue morning, cars parked along the curb buried into smooth white mounds, one set of tire tracks down the middle — The morning after a big one: cars buried to the mirrors and one set of tracks down the middle. A street like this is a closing, no debate. Photo, Fairfax, Virginia, January 2016: Jarek Tuszyński, CC BY 4.0

The odds are a forecast read, and the superintendent makes the call: the district’s own announcement is the one to follow.