Grand Rapids, Michigan 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

266
FXUS63 KGRR 222354
AFDGRR

Area Forecast Discussion
National Weather Service Grand Rapids MI
654 PM EST Mon Dec 22 2025

.KEY MESSAGES...

- No major impacts to travel this week

&&

.DISCUSSION...
Issued at 339 PM EST Mon Dec 22 2025

- No major impacts to travel this week

Despite radar imagery showing banded precip across Lower
Michigan, very little if any hydrometeors have made it to the
surface so far today. Forecast soundings suggest the column will
moisten up this evening with light snow or mixed precip possible
across the northern zones where temperatures will fall back into
the lower 30s. Given current radar trends and the overall modest
uplift associated isentropic ascent/warm advection overnight, we
expect any precip amounts to be light. Some untreated roads across
the higher elevations of Osceola and Clare Counties could be
slippery, otherwise no impacts expected.

There is a low chance of snow or mixed precip late Wednesday night
across the central and southern forecast area, but surface
temperatures near or above freezing will mitigate any potential
travel impacts. Low pressure tracks across Lower Michigan on
Friday but once again, temperatures are marginal for any frozen of
freezing precip to cause problems.

Truly cold air and lake effect snow does not return until early
next week, for Sunday and Monday when accumulating snow seems
likely as an upper low moves just north of Lower Michigan with
inversion heights around 10 kft, cyclonic flow, and -19C air at
850 mb combines to bring a shot of real winter.

&&

.AVIATION /00Z TAFS THROUGH 00Z WEDNESDAY/...
Issued at 653 PM EST Mon Dec 22 2025

LLWS is expected at times for the first few hours of this TAF
period as a low level jet moves overhead. Very light
precipitation, mostly virga, is occurring across the region. Some
sprinkles or flurries may show up in observations but no
significant obstructions to visibilities are expected. Lowering
ceilings look likely after 06z as low level moisture increases,
with IFR likely for all but MKG. Improvements to MVFR or VFR look
to occur after 18z.

&&

.GRR WATCHES/WARNINGS/ADVISORIES...
MI...None.
MARINE...None.

&&

$$

DISCUSSION...Ostuno
AVIATION...Hoving