Michigan Snow Day Calculator: Snow Day Chances Tomorrow by City
The west side of Michigan and the Upper Peninsula get heavy lake-effect snow off Lake Michigan and Lake Superior, while the Detroit area gets most of its snow from passing storm systems.
How much it takes to close school varies a lot across the state, from a few inches in Detroit to far more in the U.P., and Michigan districts also close for extreme cold.
Forecast data may be out of date. We're working on it; check your local forecast too.
Michigan's largest city
Detroit, MI
Friday
Unlikely
<1%
chance of a snow day
<1% chance of a delay
Monday
Unlikely
<1%
chance of a snow day
<1% chance of a delay
Overnight snow 0.0"Usually closes at 5"
- No meaningful snow or ice in the forecast for Friday morning.
- Detroit usually needs about 5" to close schools (normal snowfall 36" a year).
Estimate, not official. Check your school district for the final decision.
Updated .
Michigan city snow day pages
Snow day chances by city in Michigan
Usually closes at about:under 2"2–4"4–6"6"+
Chance of a snow day and of a delay on the next school day for the largest Michigan towns we track, highest chance first. We cover 192 places in Michigan; enter your ZIP code above for any of them.
| Place | Snow day | Delay | Normal snow | Usually closes at |
|---|---|---|---|---|
| Ely Township Winter Weather Advisory | 4% | 21% | 127" | 9" |
| Forsyth Township Winter Weather Advisory | 3% | 16% | 147" | 9" |
| Long Lake Township Winter Weather Advisory | 2% | 7% | 111" | 9" |
| Oscoda Township | 2% | 7% | 45" | 6" |
| Spalding Township | 2% | 8% | 64" | 7" |
| Flint | 1% | 1% | 45" | 6" |
| Marquette Winter Weather Advisory | 1% | <1% | 117" | 9" |
| Garfield Township Winter Weather Advisory | 1% | 2% | 104" | 8" |
| Mount Morris Township | 1% | 2% | 42" | 5" |
| Vienna Township | 1% | 2% | 43" | 5" |
| East Bay Township Winter Weather Advisory | 1% | 1% | 111" | 9" |
| Houghton | 1% | 2% | 208" | 10" |
| Iron Mountain | 1% | 2% | 61" | 7" |
| Ironwood | 1% | 2% | 168" | 10" |
| Caro | 1% | 2% | 42" | 5" |
| L'Anse Township Winter Weather Advisory | 1% | 3% | 199" | 10" |
| Sandusky | 1% | 6% | 42" | 5" |
| Watersmeet Township | 1% | 4% | 109" | 9" |
| Rock River Township | 1% | 1% | 163" | 10" |
| Detroit | <1% | <1% | 36" | 5" |
| Grand Rapids | <1% | <1% | 74" | 7" |
| Warren | <1% | <1% | 33" | 4" |
| Sterling Heights | <1% | <1% | 34" | 5" |
| Ann Arbor | <1% | <1% | 59" | 6" |
| Lansing | <1% | <1% | 43" | 5" |
| Dearborn | <1% | <1% | 35" | 5" |
| Clinton Township | <1% | <1% | 33" | 4" |
| Canton Township | <1% | <1% | 49" | 6" |
| Macomb Township | <1% | <1% | 35" | 5" |
| Livonia | <1% | <1% | 38" | 5" |
| Troy | <1% | <1% | 37" | 5" |
| Farmington Hills | <1% | <1% | 37" | 5" |
| Westland | <1% | <1% | 42" | 5" |
| Shelby Township | <1% | <1% | 38" | 5" |
| Wyoming | <1% | <1% | 74" | 7" |
| Rochester Hills | <1% | <1% | 38" | 5" |
| Southfield | <1% | <1% | 38" | 5" |
| Kalamazoo | <1% | <1% | 73" | 7" |
| Waterford Township | <1% | <1% | 51" | 6" |
| Novi | <1% | <1% | 41" | 5" |
Chances are for Friday. Normal snow is the NOAA 1991–2020 annual average near each town.
How much snow closes school in Michigan?
Across Michigan's larger towns, normal snowfall runs from about 27" a year in Adrian to about 117" in Marquette, so the amount it takes to close schools varies too: from roughly 4" to 9" of overnight snow in our model.
- Detroit: about 36" of snow a year; usually closes at about 5".
- Grand Rapids: about 74" of snow a year; usually closes at about 7".
- Warren: about 33" of snow a year; usually closes at about 4".
- Sterling Heights: about 34" of snow a year; usually closes at about 5".
- Ann Arbor: about 59" of snow a year; usually closes at about 6".
- Lansing: about 43" of snow a year; usually closes at about 5".
Compare every state on our how much snow closes school map.
Winter weather alerts and forecaster notes in Michigan
- Winter Weather Advisory Marquette, Garfield Township, East Bay Township, Long Lake Township, Forsyth Township, L'Anse Township, Leland Township, Ely Township
NWS Detroit/Pontiac MI · Key Messages
- Air becomes sufficiently cold for lake effect rain/snow activation late tonight and Friday morning.
- Minor slushy snow accumulation is likely across the Thumb, mainly near Saginaw Bay and near the Lake Huron shoreline, southward toward the I-69 corridor.
- Rain/snow showers gradually shift offshore Friday night and Saturday with little additional snow accumulation.
Excerpt from the National Weather Service Detroit/Pontiac MI Area Forecast Discussion, issued Nov 12, 7:11 PM EST. Read the full discussion.
NWS Grand Rapids MI · Key Messages
- Showers lingering into the evening along and south of I-96
- Lake-effect rain and snow showers along the immediate lakeshore mainly north of Pentwater
- Quiet and mild weather early next week
Excerpt from the National Weather Service Grand Rapids MI Area Forecast Discussion, issued Nov 12, 7:09 PM EST. Read the full discussion.
Michigan's biggest snow days last winter (2025–26)
Source: NOAA GHCN-Daily, nearest reporting station to each city
Biggest single-day snowfalls in the 2025–26 winter at NOAA stations near Detroit, Grand Rapids, Lansing, Portage, Saginaw, Marquette:
| Date | Near | Snowfall |
|---|---|---|
| Mon, Mar 16, 2026 | Marquette | 15" |
| Sat, Feb 21, 2026 | Marquette | 8.5" |
| Sat, Jan 31, 2026 | Marquette | 7.5" |
| Tue, Jan 27, 2026 | Grand Rapids | 7.3" |
| Fri, Nov 28, 2025 | Marquette | 6.8" |
| Thu, Nov 27, 2025 | Marquette | 6" |
| Sun, Jan 11, 2026 | Marquette | 6" |
| Wed, Dec 10, 2025 | Saginaw | 5.7" |
Season totals: Detroit 39.5" · Grand Rapids 75.4" · Lansing 41.6" · Portage 40.5" · Saginaw 35.6" · Marquette 127.3". Source: NOAA GHCN-Daily.
Largest Michigan school districts
These districts make the official call for schools around Michigan. Their websites post closings and delays first:
Snow days in nearby states
Michigan snow day FAQ
Will there be a snow day in Michigan tomorrow?
No town we track in Michigan has more than a 10% chance of a snow day on Friday right now. Enter your ZIP code at the top of this page for your own town; we track 192 places in Michigan.
How much snow does it take to close school in Michigan?
It varies across the state. Based on normal snowfall, our model puts the closing point at about 4" in Adrian and about 9" in Marquette. Ice and dangerous cold can close schools with less snow.
What were Michigan's biggest snow days last winter?
Among the NOAA stations we checked, the biggest single-day snowfall in the 2025–26 winter was 15 inches near Marquette on Mar 16, 2026.
Where are Michigan school closings announced?
Each district announces its own closings and delays on its website, app and text alerts, and local TV stations publish closing lists. Large districts include Detroit Public Schools Community District, Utica Community Schools, Dearborn Public Schools.