Plainfield, Illinois, 3,973 students in 7 schools

Troy Community Consolidated School District 30C Snow Day Predictor

Q: How much snow does Plainfield get?

About 29 inches a winter at a NOAA weather station 2.7 miles away, averaged over 10 winters. Between December 1 and March 31 that brings 3 weekday mornings a year with 2 inches of new snow or more, and 0.6 with 4 inches or more.

Q: What was the biggest snow day near Troy 30C?

8.5 inches on January 31, 2021, the largest single day at a NOAA weather station 2.7 miles away in 10 winters. The snowiest winter was 2019 to 2020, with 42.9 inches.

Q: Does Troy 30C get more snow days than other Illinois districts?

Troy 30C averages 0.6 weekday mornings a winter with 4 inches of new snow or more, more than 52 percent of the 788 Illinois districts with a station record.

Q: How does the Troy 30C snow day predictor work?

It reads the National Weather Service forecast for Plainfield 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 Troy 30C’s own big snow morning: 3.4 inches, the top tenth of snowy weekday mornings at a NOAA weather station 2.7 miles away.

The odds of a closing or a delay on the next three school mornings in Troy 30C, measured against Troy 30C's own big snow morning of 3.4 inches.

The next three school mornings

Will Troy 30C close tomorrow?

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

Ten winters of school mornings

Troy 30C’s snow record

29inches of snow a winter

3school mornings a winter with 2 in of new snow or more

0.6with 4 in or more

3.4 ina big snow morning in Troy 30C: the top tenth of snowy school mornings

More 4 inch school mornings than 52% of the 788 Illinois districts with a station record.

3Nov

4.3Dec

9.9Jan

7.2Feb

2.6Mar

Average snowfall by month, inches

Biggest day 8.5 in on January 31, 2021
Snowiest winter 2019 to 2020, 42.9 in
6 in mornings 0.1 a winter
1 in mornings 5.8 a winter

Measured at a NOAA weather station 2.7 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 Illinois rule

How Illinois counts a lost day

Illinois requires a calendar of at least 185 days to guarantee 176 days of actual student attendance, each of at least 5 clock hours. The extra calendar days are emergency days used first; after they are gone, the State Superintendent may excuse days lost to an act of God or a hazard beyond the district's control without cutting state aid.

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

Next door

Districts near Troy 30C

District	Snow a winter	4 in mornings	Built in days
Plainfield School District 202Plainfield	29 in	0.6	5
Joliet Township High School District 204Joliet	19.4 in	0.6
Joliet Public School District 86Joliet	19.4 in	0.6
Minooka Community Consolidated School District 201Minooka	25.2 in	1.1
Valley View Community Unit School District 365URomeoville	29.2 in	0.8	5
Lockport Township High School District 205Lockport	29.2 in	0.8

The schools

7 schools

Every school in Troy 30C follows the district’s call: one closing covers them all.

Middle

Troy Middle School
Orenic Intermediate School

Elementary

Troy Craughwell School, Joliet
Troy Cronin Elem School, Shorewood
Troy Heritage Trail School, Joliet
Troy Hofer Elem Sch, Shorewood
Troy Shorewood School, Shorewood

Questions

Troy 30C snow day questions

How much snow does Plainfield get?

What was the biggest snow day near Troy 30C?

Does Troy 30C get more snow days than other Illinois districts?

How does the Troy 30C snow day predictor work?

How does Illinois handle snow days?

More winter

More for Illinois 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.Illinois winter forecastThe season ahead for Illinois: 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.