South Williamsport, Pennsylvania, 1,098 students in 3 schools

South Williamsport Area School District Snow Day Predictor

Q: How much snow does South Williamsport get?

About 28.5 inches a winter at a NOAA weather station 1.6 miles away, averaged over 10 winters. Between December 1 and March 31 that brings 2.9 weekday mornings a year with 2 inches of new snow or more, and 0.8 with 4 inches or more.

Q: What was the biggest snow day near South Williamsport?

17.2 inches on March 14, 2017, the largest single day at a NOAA weather station 1.6 miles away in 10 winters. The snowiest winter was 2020 to 2021, with 53.1 inches.

Q: How does the South Williamsport snow day predictor work?

It reads the National Weather Service forecast for South Williamsport 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 South Williamsport’s own big snow morning: 3 inches, the top tenth of snowy weekday mornings at a NOAA weather station 1.6 miles away.

Q: Can Pennsylvania schools hold a remote day instead?

A district with a PDE accepted plan can turn up to five closure days a year, including snow days, into Flexible Instructional Days that count as school days; they can be online, offline or both.

The odds of a closing or a delay on the next three school mornings in South Williamsport, measured against South Williamsport's own big snow morning of 3 inches.

The next three school mornings

Will South Williamsport close tomorrow?

Reading the National Weather Service forecast for the overnight and the bus hours in South Williamsport.

Ten winters of school mornings

South Williamsport’s snow record

28.5inches of snow a winter

2.9school mornings a winter with 2 in of new snow or more

0.8with 4 in or more

3 ina big snow morning in South Williamsport: the top tenth of snowy school mornings

1.4school mornings a winter at 0 F or colder

1.6Nov

6.3Dec

8.7Jan

6.2Feb

4.6Mar

Average snowfall by month, inches

Biggest day 17.2 in on March 14, 2017
Snowiest winter 2020 to 2021, 53.1 in
6 in mornings 0.5 a winter
1 in mornings 5.1 a winter

Measured at a NOAA weather station 1.6 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 South Williamsport

District	Snow a winter	4 in mornings
Loyalsock Township School DistrictWilliamsport	28.5 in	0.8
Williamsport Area School DistrictWilliamsport	23.9 in	0.8
Montoursville Area School DistrictMontoursville	27.1 in	0.6
Jersey Shore Area School DistrictJersey Shore	26.5 in	1.1
Warrior Run School DistrictTurbotville	27.1 in	0.6
East Lycoming School DistrictHughesville	27.1 in	0.6

The schools

3 schools

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

High

South Williamsport Area JSHS

Middle

Rommelt El Sch

Elementary

Central El Sch

Questions

South Williamsport snow day questions

How much snow does South Williamsport get?

What was the biggest snow day near South Williamsport?

How does the South Williamsport snow day predictor work?

How does Pennsylvania handle snow days?

Can Pennsylvania schools hold a remote day instead?

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.