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Grand Rapids, Michigan 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for Grand Rapids MI
National Weather Service Forecast for:
Grand Rapids MI
Issued by: National Weather Service Grand Rapids, MI |
| Updated: 2:21 am EDT May 16, 2026 |
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Overnight
Showers
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Saturday
Showers
Likely then
Mostly Sunny
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Saturday
Night
Partly Cloudy
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Sunday
Mostly Sunny
then Chance
Showers
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Sunday
Night
Slight Chance
T-storms then
Mostly Clear
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Monday
Sunny then
Showers
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Monday
Night
Showers
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Tuesday
Chance
T-storms then
Showers and
Breezy
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Tuesday
Night
Showers
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| Lo 58 °F |
Hi 80 °F |
Lo 56 °F |
Hi 84 °F |
Lo 67 °F |
Hi 88 °F |
Lo 67 °F |
Hi 85 °F |
Lo 52 °F |
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Overnight
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A slight chance of showers and thunderstorms between 4am and 5am, then showers and possibly a thunderstorm after 5am. Low around 58. South wind around 8 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Saturday
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Showers and thunderstorms likely before 8am, then a slight chance of showers between 8am and 9am. Cloudy, then gradually becoming mostly sunny, with a high near 80. South southwest wind 8 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Saturday Night
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Partly cloudy, with a low around 56. West southwest wind around 5 mph becoming calm in the evening. |
Sunday
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A chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. East wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. |
Sunday Night
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A slight chance of thunderstorms before 8pm. Partly cloudy, with a low around 67. South southeast wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 10%. |
Monday
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Showers and possibly a thunderstorm, mainly after 5pm. High near 88. Chance of precipitation is 80%. |
Monday Night
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Showers and possibly a thunderstorm before 11pm, then showers likely between 11pm and 2am, then showers likely and possibly a thunderstorm after 2am. Low around 67. Chance of precipitation is 80%. |
Tuesday
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A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. Breezy. |
Tuesday Night
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Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 52. |
Wednesday
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Partly sunny, with a high near 63. |
Wednesday Night
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Partly cloudy, with a low around 42. |
Thursday
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Mostly sunny, with a high near 66. |
Thursday Night
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Partly cloudy, with a low around 45. |
Friday
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Mostly sunny, with a high near 71. |
Forecast from NOAA-NWS
for Grand Rapids MI.
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Weather Forecast Discussion
876
FXUS63 KGRR 160625
AFDGRR
Area Forecast Discussion
National Weather Service Grand Rapids MI
225 AM EDT Sat May 16 2026
.KEY MESSAGES...
- Storms this morning
- Unsettled into next week; strong/severe storms possible Monday
- Cooler mid to late week
&&
.DISCUSSION...
Issued at 224 AM EDT Sat May 16 2026
- Storms this morning
Regional radar shows a well defined MCV moving ENE across central
Wisconsin. A large area of strong to severe storms was noted with
this MCV. Dewpoints in Wisconsin are in the mid 50s...10 degrees
higher than across the cwa. SPC meso progs suggest that we`ll see
500 or so j/k MUCAPE toward sunrise in southwest Lower. This
should result in a weakening trend as the convection pushes across
the lake. This convection should move across the lake around 400
am and continue eastward, exiting the cwa around 12z. Latest GFS
shows increasing shear between 09-12z suggesting that the storms
won`t weaken too quickly despite lower moisture levels. Indeed,
latest IR loop continues to show cooling cloud tops to the west.
Once the convection moves east of the cwa, there will be a lull.
However, a few of the CAMs point toward renewed showers across
near I-94 late morning. Then, the rest of the day through mid
afternoon Sunday will be dry.
- Unsettled into next week; strong/severe storms possible Monday
A northward moving warm front will move into Lower MI Sunday
afternoon, and this may become a focus for renewed convective
development. Dynamics are somewhat weak; shear values are around
20 kts south of I-96, but closer to 35 knots over the northern
cwa, which is where the RRFS EMC shows some development. Once the
warm front moves north, we`ll be watching trends along the cold
front over Wisconsin/Iowa Sunday night into Monday. Strong to
severe storms will fire along the front across Wisconsin Sunday
night and move east, potentially affecting the northern cwa Monday
afternoon with more development farther south along the frontal
boundary Monday night. Some of these storms could be strong to
severe as well. The convective threat will remain until Tuesday
when the cold front will move through.
- Cooler mid to late week
Air behind the cold front will be in the 60s Wednesday and
Thursday...quite a bit cooler than the 80s ahead of it. However,
temperatures will warm into the lower to mid 70s Friday and
Saturday.
&&
.AVIATION /06Z TAFS THROUGH 06Z SUNDAY/...
Issued at 1223 AM EDT Sat May 16 2026
Regional radar shows thunderstorms over Wisconsin moving east at
40kts. This places the storms over the lake around 430-500
am...pretty much in line with recent CAM trends. Storms will then
move across the cwa and exit around 12z. The rest of the period
looks to be dry.
As the LLJ moves across the terminals early this morning, some
LLWS is possible from 08z-14z or so. Cigs may briefly fall to MVFR
as the precipitation moves through, then rise back to VFR by late
morning.
&&
.MARINE...
Issued at 224 AM EDT Sat May 16 2026
A weak pressure gradient will result in little if any marine
issues through Sunday. Winds will increase Sunday night as low
pressure over the upper Midwest advances eastward; a small craft
advisory may be needed Sunday night through Tuesday.
&&
&&
.GRR WATCHES/WARNINGS/ADVISORIES...
MI...None.
MARINE...Small Craft Advisory until 5 AM EDT early this morning for
LMZ846>849.
&&
$$
DISCUSSION...04
AVIATION...04
MARINE...04
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