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Harmony, Pennsylvania, 7,476 students in 8 schools

Seneca Valley School District Snow Day Predictor

The odds of a closing or a delay on the next three school mornings in Seneca Valley, measured against Seneca Valley's own big snow morning of 3.2 inches.

The next three school mornings

Will Seneca Valley close tomorrow?

Reading the National Weather Service forecast for the overnight and the bus hours in Harmony.
The Seneca Valley playbook

How Seneca Valley calls a snow day

When the call comes

By 5:30 a.m.

“The Seneca Valley School District will make every effort to close or delay school by 5:30 a.m. of the affected school day.”
Source

How families hear

By phone call, text message, email, the district website, radio, local TV and the district app.

“SchoolMessenger, SV's mass notification system, which will be programmed to call/text the phone number designated for each child*. E-mails may be used to provide follow-up information.”
Inclement Weather Notice

A 2 hour delay

On a delay morning every school starts 2 hours late.

“When Seneca Valley calls for a two-hour delay, all students will follow their schedule two hours later.”
Delay schedule

3 built in snow days

On the 2026 to 2027 calendar, listed as “Snow Makeup Day”.

“If it is a traditional “Snow Day,” the following are three makeup days that will be utilized. Feb. 12, 2027 March 5, 2027 April 16, 2027”
Source

Remote learning days

Seneca Valley has remote learning days in its winter plan.

“In the event of an inclement weather closure, SV may call for either a traditional “Snow Day,” or a Remote Learning Day.”
Source

Making up a lost day

For a traditional snow day the makeup days are Feb 12, Mar 5 and Apr 16, 2027; each becomes a holiday if not needed.

“SM - Snow Makeup Day (this day becomes a holiday if no snow make-up days are needed)”
Source

The 2026 to 2027 calendar

  • First day August 20, 2026
  • Winter break Dec 23 to Jan 1
  • Last day June 4, 2027
District calendar

Recent snow days

  • 2025 to 2026: 2 days. Two weather closures, Dec 2, 2025 and Jan 26, 2026, made up on the built in days Feb 13 and Mar 16, 2026.
    “Friday, Feb. 13, 2026, is Snow Makeup Day #1 and will make up the Dec. 2, 2025 weather closure”
    District notice

Read from Seneca Valley’s own pages on October 8, 2026; the district site is svsd.net.

Ten winters of school mornings

Seneca Valley’s snow record

38.9inches of snow a winter
4.5school mornings a winter with 2 in of new snow or more
1.4with 4 in or more
3.2 ina big snow morning in Seneca Valley: the top tenth of snowy school mornings

More 4 inch school mornings than 73% of the 490 Pennsylvania districts with a station record.

2.2Nov
8.2Dec
14.4Jan
7.5Feb
5.2Mar
Average snowfall by month, inches
  • Biggest day 11.5 in on January 26, 2026
  • Snowiest winter 2017 to 2018, 57.3 in
  • 6 in mornings 0.4 a winter
  • 1 in mornings 9 a winter

Measured at a NOAA weather station 6.1 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.

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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 Seneca Valley

DistrictSnow a winter4 in mornings
Riverside Beaver County School DistrictEllwood City20.4 in1.4
Ellwood City Area School DistrictEllwood City20.4 in1.4
Mars Area School DistrictMars38.9 in1.4
Butler Area School DistrictButler38.9 in1.4
Pine-Richland School DistrictGibsonia38.9 in1.4
New Brighton Area School DistrictNew Brighton20.4 in1.4
The schools

8 schools

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

High

  • Seneca Valley HS

Middle

  • Ryan Gloyer MS
  • Ehrman Crest MS, Cranberry Township
  • Haine MS, Cranberry Twp

Elementary

  • Haine El Sch, Cranberry Twp
  • Ehrman Crest El Sch, Cranberry Township
  • Connoquenessing Valley El Sch, Zelienople
  • Rowan El Sch, Cranberry Twp
Questions

Seneca Valley snow day questions

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