Redgranite, Wisconsin Weather Forecast Discussion

971
FXUS63 KGRB 261047
AFDGRB
Area Forecast Discussion
National Weather Service Green Bay WI
547 AM CDT Fri Sep 26 2025
Updated aviation portion for 12Z TAF issuance
.KEY MESSAGES...
- An extended period of low-impact weather is forecast through
  next Thursday. Above average temperatures are expected during
  this time. Greatest chances (40-70%) of highs reaching or
  exceeding 80 degrees will be Saturday and Monday.
- Any fog late this morning should be quite patchy. More fog is
  possible tonight into Saturday morning.
&&
.DISCUSSION...
Issued at 219 AM CDT Fri Sep 26 2025
Patchy dense fog will be possible this morning; however,
observations and model data indicate it will not be as ubiquitous
or dense as the last few nights.
A weak moisture starved cold front will continue sinking south
through the area today, bringing slightly cooler temperatures to
the region. Some clouds will sink south behind the cold front
today, with some sprinkles possible across central and east-
central Wisconsin this afternoon. Some patchy fog is once again
possible late tonight into Saturday morning as moisture gets
trapped in the lowest portion of the atmosphere underneath a
subsidence inversion.
High pressure will then be firmly in control of the weather this
upcoming weekend and well into next week as an upper level ridge
establishes itself over the Great Lakes region. This will bring
dry weather and well above normal conditions for this time of
year. In fact the probability of hitting at least 80 is highest on
Saturday (40-70% chance) east of Stevens Point as well as on
Monday (40-70% chance) across much of central and east-central
Wisconsin. The coolest night will be Saturday night when some
upper 30s will be possible across northern Wisconsin, with lows
generally in the 40s and 50s during this period. This pattern will
continue to favor fog during the late night/early morning, with
some nights experiencing more widespread and denser fog than
others.
&&
.AVIATION...for 12Z TAF Issuance
Issued at 546 AM CDT Fri Sep 26 2025
A deck of MVFR/IFR CIGs continues to push south this morning as a
cold front sinks south across the region. Any fog this morning
should be brief and is not expected to impact the TAF sites. The
best chance for MVFR/IFR CIGs is across east-central Wisconsin
with lesser chances across central Wisconsin. Skies will then
clear this afternoon as high pressure builds in across the region.
Patchy fog is expected tonight with MVFR/IFR conditions, with the
best chances across north-central and central Wisconsin. LLWS is
expected late tonight across central and north-central Wisconsin
as winds increase just off the surface.
&&
.GRB WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
DISCUSSION.....Kurimski
AVIATION.......Kurimski

NWS GRB Office Area Forecast Discussion