Delray, Michigan Weather Forecast Discussion

000
FXUS63 KDTX 290944
AFDDTX
Area Forecast Discussion
National Weather Service Detroit/Pontiac MI
544 AM EDT Mon Sep 29 2025
.KEY MESSAGES...
- No significant weather nor precipitation expected through the next
seven days.
- Above normal temperatures retreat to more seasonable readings mid-
week.
&&
.AVIATION...
High pressure centered over the region today will provide deep layer
subsidence keeping skies clear. Any chance of early morning fog is
quickly dwindling for DTW/YIP as dewpoint depressions have been
holding around 3-5 degrees through the early morning. Winds will be
light and variable under the center of the high as is passes before
becoming northeasterly tonight as the center drifts over southern
Ontario.
For DTW/D21 Convection...Convection will not occur through the TAF
period.
DTW THRESHOLD PROBABILITIES...
* None.
&&
.PREV DISCUSSION...
Issued at 337 AM EDT Mon Sep 29 2025
DISCUSSION...
A longwave mid-upper ridge will translate over the Midwest and Great
Lakes over the course of this week bringing stable conditions and no
precipitation to speak of through the work week. For today, the
surface high pressure slides across the central and eastern Great
Lakes while washing out towards the NE CONUS resulting in light and
variable winds locally. Temperatures at 850 mb to 14-16C bring
daytime high temperatures this afternoon in the upper 70s to low 80s
under sunny skies. Continued lack of clouds through tonight will
allow overnight lows to drop into the upper 40s to mid 50s for most
of SE MI.
Lower level flow becomes better organized out of the north to
northeast on the south end of a strong high pressure emerging out of
central Canada. This draws a slightly cooler airmass into Michigan
and will mainly result in daytime highs on Tuesday dropping to
around 80 degrees for most of southeast Michigan with the exception
of shoreline areas that will be in the low-mid 70s.
Mid to late week will see the upper ridge axis pivot across the
central and eastern Great Lakes while the aforementioned surface
high drifts into eastern Canada and the northeast CONUS. The
lower level flow out of the east to northeast will lead to advection
of slightly cooler thermal profiles. This will bring daily highs to
start the month of October down towards more normal values around 70
degrees for inland areas for Wednesday and Thursday. The lakeshore
areas of the Thumb can expect temperatures in the 60s. Another
noticeable difference mid to late week will be a boost in high
clouds.
Warm advection will ensue Friday into the weekend with the passing
of the ridge axis sending 850 mb temperatures back into the mid
teens C. Daytime highs respond accordingly and return to the low-
mid 80s. The longwave ridge begins to flatten during this upcoming
weekend while a Pacific wave crosses the Rockies and into the
central CONUS. A surface high pressure and ridge entrenched over
Appalachia and the mid Atlantic should help direct any
precipitation/deeper moisture associated with this low to the north.
Thus, dry weather would prevail during the weekend as well.
MARINE...
High pressure drifts into the eastern Great Lakes today while a
second high builds into Ontario. Light winds remain variable through
tonight before organizing out of the northeast by Tuesday morning as
the Ontario high expands. The onshore flow and tighter gradient
elevate wind gusts toward 25 knots and waves toward 5 feet, which
may require Small Craft Advisories for Tuesday.
&&
.DTX WATCHES/WARNINGS/ADVISORIES...
MI...None.
Lake Huron...None.
Lake St Clair...None.
Michigan waters of Lake Erie...None.
&&
$$
AVIATION.....DRK
DISCUSSION...AA
MARINE.......MV
You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.

NWS DTX Office Area Forecast Discussion