McCall-Donnelly Joint School District 421 snow day calculator
Will McCall-Donnelly Joint School District 421 close tomorrow?
District facts
- Official name
- McCall-Donnelly Joint School District 421
- Schools
- 5
- Grades
- pre-K to grade 12
- Office
- Mccall, ID
- Snow a year
- 132 in. · 19.0 days with 3+ in.
- NCES ID
- 1602030
National Center for Education Statistics (CCD 2024–25, EDGE GRF25); NOAA 1991–2020 normals. Not affiliated with the district.
Past winter days
We record what happened on each storm day (our chance, and whether McCall-Donnelly Joint School District 421 closed, delayed or opened) from parent reports. The first days appear here this winter. Report today's decision.
What it takes to close McCall-Donnelly Joint School District 421
- Snow line
- About 15 in. of overnight snow
- Ice line
- About .25 in. of ice
- Cold line
- −31°F wind chill at bus time (normal winter low 14°F)
- Counties
- Valley County, Idaho County, Adams County
Levels where a closure becomes likely in our model for ZIP 83638, from McCall-Donnelly Joint School District 421's local snow normal: 19.0 days a year with 3 or more inches. Snow varies across the district: its ZIP codes average from 86 to 132 inches a year, so the line is higher in the snowier parts. These are model estimates, not the district's policy.
Nearby districts
| District | Snow a year | Snow line |
|---|---|---|
| Orofino Joint School District 171 | 18 in. | 5.5 in. |
| Baker School District 5J OR | 79 in. | 11.5 in. |
| Corvallis K-12 Schools MT | 17 in. | 5 in. |
| Moscow School District 281 | 51 in. | 9 in. |
| Pullman School District WA | 33 in. | 8 in. |
| Missoula Elementary School District MT | 43 in. | 7 in. |
ZIP codes McCall-Donnelly Joint School District 421 serves
83611, 83615, 83638, 83677
ZIP codes that overlap the district's boundary (NCES EDGE GRF25). Some are shared with neighboring districts.
Check a different ZIP
Loading tonight's forecast…
Snow by hour
From the National Weather Service forecast, updated hourly. Estimate only. Your district makes the call.
McCall-Donnelly Joint School District 421 snow day questions
Is McCall-Donnelly Joint School District 421 closed tomorrow?
The card above shows tomorrow's chance that McCall-Donnelly Joint School District 421 closes or delays school, from tonight's National Weather Service forecast for the district's area. It is an estimate; only the district can announce a closure, usually on its website, by text or phone alert, and through local TV and radio.
How much snow does it take to close McCall-Donnelly Joint School District 421?
There is no fixed number: the district weighs snow totals, ice, wind chill, road crews and timing. Our model treats about 15 inches of overnight snow as the level where closures become likely around ZIP 83638, which averages 132 inches of snow a year (NOAA 1991–2020 normals).
When does McCall-Donnelly Joint School District 421 announce snow days?
Districts usually decide early in the morning, after crews check the roads, and sometimes the evening before when a big storm is certain. Check the district's official website and alerts for the decision; we don't report official closings.
Guides
- How much snow cancels school?
From one inch in Atlanta to a foot in Buffalo: what it takes in every state, with NOAA data.
- What time are snow days announced?
When districts decide, how they tell families, and when to check the calculator.
- How school districts decide snow days
Who makes the call, what they check before dawn, and why neighboring districts disagree.
- Snow day vs. delay vs. early dismissal
What each one means, when districts use them, and how the calculator scores each.