Boise City Independent School District 1 Snow Day Predictor

Boise announces closings partners confer early in the morning before making a decision, by its own published protocol.

By text message, email, the district app, the district website, social media, local TV and radio, and on the district’s own closings page.

May 21, 2027, on the district’s 2026 to 2027 calendar.

About 18.3 inches a winter at a NOAA weather station 2.1 miles away, averaged over 10 winters. Between December 1 and March 31 that brings 2.6 weekday mornings a year with 2 inches of new snow or more, and 0.2 with 4 inches or more.

6.1 inches on January 14, 2024, the largest single day at a NOAA weather station 2.1 miles away in 10 winters. The snowiest winter was 2016 to 2017, with 35.1 inches.

It reads the National Weather Service forecast for Boise 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 Boise’s own big snow morning: 2.8 inches, the top tenth of snowy weekday mornings at a NOAA weather station 2.1 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.