Will Michigan have a White Christmas?
Michigan is not one Christmas climate. Southeast Michigan can be a coin flip or worse while the Lake Superior snow belt is historically one of the strongest White Christmas regions in the United States.
34.7% historical probability
NWS Detroit/Pontiac reports a 34.7% White Christmas probability from the 1991-2020 climate normals.
51.1% historical probability
Flint moves just above the historical coin-flip line, illustrating how quickly odds improve north of Detroit.
45.7% historical probability
Saginaw sits in the middle: White Christmases are common enough to be plausible every year, but far from guaranteed.
About 96% historically
NOAA's national 1991-2020 material places Marquette near the top of the U.S. White Christmas climatology.
What changes the Michigan answer this year?
Lake-effect snow
Western Lower Michigan and the U.P. can build persistent snowpack in patterns that leave southeast Michigan bare.
December temperature regime
A mild spell can erase a deep early-December pack. A cold final week can preserve surprisingly modest snow.
Existing pack
Once Christmas is within 45 days, the live tool begins using nearby NOHRSC/SNOTEL snowpack rather than relying only on history and outlooks.
The final forecast
Inside the final week, NWS forecast temperatures, rain and snow become much more important than the seasonal outlook.
For the full historical map, see the White Christmas probability map. For this year's estimate, use the White Christmas tool.