Green Bay, Wisconsin 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

513
FXUS63 KGRB 021157
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
557 AM CST Mon Feb 2 2026

Updated aviation portion for 12Z TAF issuance

.KEY MESSAGES...

- Slippery conditions from last night`s snow and patchy freezing
  drizzle may extend into this morning`s commute, especially on
  untreated secondary roads.

- A clipper system may impact the area Thursday and Friday. This
  system has the potential to bring minor snow accumulations and
  gusty winds, followed by a brief return to colder temperatures.

- Highs in the 20s will be common for much of the week, with the
  warmest days occurring Thursday and Monday, when some locations
  may reach the lower to middle 30s.

&&

.DISCUSSION...
Issued at 252 AM CST Mon Feb 2 2026

Light snow over eastern WI will continue to shift east early this
morning as a short-wave and associated cold front move out of the
region. Scattered lake-effect snow showers will linger across far
NC WI during the day, and probably into tonight. Otherwise
scattered flurries and patchy freezing drizzle (across the far
south part of the forecast area) should taper off around daybreak.
Slippery roads from last night`s snow and patchy freezing drizzle
may linger into the morning commute, especially on any untreated
secondary roads. Overcast conditions should give way to a few
breaks as the day wears on, and this should help boost
temperatures into the upper teens and lower 20s northwest to the
middle to upper 20s elsewhere. More widespread clearing occurs
tonight, except in far NC WI, where some lake-effect clouds
persist. Partly cloudy skies and light winds should allow
temperatures to drop into the single digits above and below zero.

A period of high pressure will bring dry conditions Tuesday through
Wednesday night as the upper-level pattern re-amplifies. An upper
ridge strengthens over the western U.S. while a mean trough
reinforces itself over the East. This set-up will pave the way for
another clipper system Thursday into Friday. Model trends are
leaning toward a farther north track through Ontario with this
system; perhaps as far north as Hudson/James Bays. If this occurs,
would expect less snow and a bit warmer temperatures. Gusty NW-N
winds would still occur on Friday, but with a lower chance of
gales on Lake Michigan.

Temperatures remain on the milder side through most of the
period, with highs mainly in the 20s, and even some lower to
middle 30s in C/EC WI Thursday and Monday. A brief shot of below
normal temperatures arrives in the wake of the late week clipper
system, but temperatures should rebound a bit by the end of the
weekend.

&&

.AVIATION...for 12Z TAF Issuance
Issued at 544 AM CST Mon Feb 2 2026

Although the main area of light snow has shifted east of the
region, patchy light snow showers/flurries/freezing drizzle (far
SE) were still occurring along and ahead of the surface cold
front. MVFR/IFR ceilings were observed near the front, but
conditions improved to VFR behind it, with some breaks in the
cloud cover noted over central and southern MN and NW WI. This
should result in improving conditions over the forecast area during
the mid to late morning. More widespread clearing is anticipated
this evening as a surface high builds into the region, though some
low clouds and scattered light lake-effect snow showers may
persist over far NC WI through much of the night.

W-NW winds will become NW-N tonight, with speeds generally under
10 knots.

&&

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

&&

$$

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