textproduct: Grand Rapids
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
- Predominantly Dry Weather This Week
- Near Normal Temperatures
DISCUSSION
Issued at 306 PM EDT Mon Sep 21 2026
- Predominantly Dry Weather This Week
We are expecting mainly dry weather the rest of the work week and into the weekend. Most ensemble members are showing dry weather through the forecast period which leads to a high confidence forecast.
The one item we are keeping an eye on though is the upper low to our west that drifts through the southern Great Lakes region Tuesday into Wednesday. The upper low is losing definition with time though as it traverses our area given it is moving through the mean ridge position. Moisture depth is not significant. We will continue with the dry forecast and watch the approach of the low.
- Near Normal Temperatures
Near to below normal temperatures are still expected through the period. Highs most days will be in the 60s which will be very close to normals across the area.
AVIATION /06Z TAFS THROUGH 06Z WEDNESDAY/
Issued at 135 AM EDT Tue Sep 22 2026
Any lower clouds that were around yesterday afternoon and evening have dissipated/moved out of the area as of early this morning. We are left with only some high clouds. This should remain the case through the night.
High clouds will thicken up once again, and some sct-bkn clouds around 3500-4000 ft will develop. More widespread lower clouds are expected at the I-94 terminals. Winds will become gusty by afternoon with gusts 20-25 knots expected once again. The winds will diminish toward sunset. The 3500-4000 ft clouds actually look to stick around with the upper low rotating just south of the area.
MARINE
Issued at 306 PM EDT Mon Sep 21 2026
A sprawling area of high pressure situated across the Great Lakes region will remain in place right through the work week. This will result in east and northeast winds for Southwest Lower Michigan through Friday. Given the off shore component of the wind we are expecting limited wave action near shore (0-1 foot). Out towards the 5 mile off shore mark we should be looking at larger waves (1-3 feet).
GRR WATCHES/WARNINGS/ADVISORIES
MI...None. MARINE...None.
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