Sioux Falls School District 49-5 Snow Day Predictor

By the district website, phone call, text message and email, and on the district’s own closings page.

May 26, 2027, on the district’s 2026 to 2027 calendar.

About 44.9 inches a winter at a NOAA weather station 2.9 miles away, averaged over 10 winters. Between December 1 and March 31 that brings 3.8 weekday mornings a year with 2 inches of new snow or more, and 1.9 with 4 inches or more.

11.6 inches on December 11, 2021, the largest single day at a NOAA weather station 2.9 miles away in 10 winters. The snowiest winter was 2022 to 2023, with 79.6 inches.

Sioux Falls averages 1.9 weekday mornings a winter with 4 inches of new snow or more, more than 75 percent of the 147 South Dakota districts with a station record.

It reads the National Weather Service forecast for Sioux Falls 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 Sioux Falls’s own big snow morning: 4.3 inches, the top tenth of snowy weekday mornings at a NOAA weather station 2.9 miles away.

South Dakota requires at least 437.5 hours for kindergarten, 875 hours for grades 1 to 5 and 962.5 hours for grades 6 to 12; the local board sets the number of days. The Secretary of Education may waive the minimum hours when the Governor or the President declares a state of emergency covering the school; there is no fixed count of forgiven days.