Township High School District 113 Snow Day Predictor

About 36.8 inches a winter at a NOAA weather station under a mile away, averaged over 8 winters. Between December 1 and March 31 that brings 3.8 weekday mornings a year with 2 inches of new snow or more, and 1.3 with 4 inches or more.

14.1 inches on February 16, 2021, the largest single day at a NOAA weather station under a mile away in 8 winters. The snowiest winter was 2018 to 2019, with 58.7 inches.

Township High School District 113 averages 1.3 weekday mornings a winter with 4 inches of new snow or more, more than 96 percent of the 788 Illinois districts with a station record.

It reads the National Weather Service forecast for Highland Park 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 Township High School District 113’s own big snow morning: 3.8 inches, the top tenth of snowy weekday mornings at a NOAA weather station under a mile away.

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.