Bonneville Joint School District 93 Snow Day Predictor

Bonneville announces closings conference call at 5:30 am; messages starting at 6 am, by its own published protocol.

By social media, and on the district’s own closings page.

2 hours: on a delay morning every school starts that much later.

June 3, 2027, on the district’s 2026 to 2027 calendar.

About 47.9 inches a winter at a NOAA weather station 2.6 miles away, averaged over 10 winters. Between December 1 and March 31 that brings 6.4 weekday mornings a year with 2 inches of new snow or more, and 0.8 with 4 inches or more.

It reads the National Weather Service forecast for Idaho 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 Bonneville’s own big snow morning: 3 inches, the top tenth of snowy weekday mornings at a NOAA weather station 2.6 miles away.

Idaho requires at least 990 instructional hours for grades 9 to 12, 900 for grades 4 to 8, 810 for grades 1 to 3 and 450 for kindergarten. With local board approval, up to 11 hours of emergency closures for bad weather or facility failures can come off the yearly hours requirement.