Green Bay, Wisconsin 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

403
FXUS63 KGRB 151124
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
624 AM CDT Wed Oct 15 2025

Updated aviation portion for 12Z TAF issuance

.KEY MESSAGES...

- Cool temperatures today, with a warm up late in the week. The
  warmest day occurs on Friday.

- Showers taper off early this morning. Periodic rain chances and
  a few thunderstorms expected later this week and into the
  weekend.

&&

.DISCUSSION...
Issued at 322 AM CDT Wed Oct 15 2025

Showers associated with mid-level frontogenesis, upper divergence
with an upper level jet streak and a weak short-wave trough will
taper off from northwest to southeast early this morning.
Widespread cloud cover will linger through this morning, followed
by clearing from northeast to southwest in the afternoon and early
evening. Cool temperatures are expected today, with highs only in
the 50s.

Upper level ridging and Canadian high pressure will bring a brief
break in the rainfall for most of the area through tonight. Low
pressure will track from the Northern Plains into southern
Manitoba Thursday into Thursday night, with a 30 to 40 knot low-
level jet helping to push a warm front north through WI. The LLJ
and frontal passage will bring a chance of showers and a few
thunderstorms, though a break is expected to occur as the front
lifts north on Friday. Breezy south winds gusting to 25 to 30 mph
will help boost Friday`s high temperatures into the upper 60s to
middle 70s.

A cold/occluded frontal passage and short-wave energy will bring
widespread showers and a few embedded storms to the forecast area
Friday night into Saturday, and a surface wave lifting northeast
along the front could slow its departure, leading to significant
rainfall in eastern WI Saturday afternoon and night. Drier weather
should return Sunday night into Monday. After the weekend frontal
passage, temperatures return to near normal for the middle of
October.

&&

.AVIATION...for 12Z TAF Issuance
Issued at 618 AM CDT Wed Oct 15 2025

Most of the rain had ended by issuance time, but MVFR/IFR
ceilings lingered, especially over C/EC WI. Expect the low
ceilings to gradually rise or erode later this morning or early
afternoon before skies clear from NE to SW later in the day.

Light NE-SE winds are anticipated through the TAF period.
&&

.GRB WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

DISCUSSION.....Kieckbusch
AVIATION.......Kieckbusch