Duluth, Minnesota 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

301
FXUS63 KDLH 050537
AFDDLH

Area Forecast Discussion
National Weather Service Duluth MN
1137 PM CST Thu Dec 4 2025

.KEY MESSAGES...

- Snow showers arrive today and tonight in the Borderlands and
  along the North Shore, where localized heavier amounts are
  possible.

- A second round of light snow is forecast for Friday along our
  south which will lead to a couple inches for east central
  Minnesota and northwest Wisconsin.

- Colder than average temperatures continue for the weekend
  with overnight lows dropping below zero and daytime highs
  remaining in the single digits and teens.

&&

.DISCUSSION...
Issued at 118 PM CST Thu Dec 4 2025

The Northland will experience active weather over the next
couple of days, starting with a weather system that is expected
to bring light snow showers today. Snow showers are fighting dry
air, so only flurries are being observed currently, but will
increase in intensity throughout the late afternoon and
evening. While overall accumulations will be minor - up to an
inch, the area near the North Shore of Lake Superior may see
the highest totals, possibly reaching 3 inches..

Another low pressure system will track south of our region on
Friday morning, bringing another chance for accumulating snow,
particularly across our southern forecast area, including east
central Minnesota and northwest Wisconsin. Current forecast
guidance suggests these areas could receive 2 to 3 inches of
snow, potentially impacting morning and afternoon travel.
Further north, totals are expected to be lighter, with only a
trace expected in the Iron Range. This system will move off to
the east by Friday night, but an incoming cold air mass behind
the system will cause lake effect snow in Iron County. This lake
effect snow is expected to linger as late as early Sunday
morning, continuing until the air over Lake Superior becomes too
dry to produce snow showers. Following the end of the lake
effect snow, the fresh surge of cold air will settle into the
rest of the Northland for the weekend. This will lead to a
significant drop in temperatures, with readings up to 15 degrees
below normal on both Saturday and Sunday. Highs will be in the
teens and single digits, while overnight lows will be below zero
and approaching -10 degrees.

Early next week, the weather pattern remains active with another
approaching weather system associated with a push of warmer air
aloft. While precipitation is possible, confidence in the exact
track, timing, and amounts of any potential snowfall is low due
to forecast guidance diverging.

&&

.AVIATION /06Z TAFS THROUGH 06Z SATURDAY/...
Issued at 1137 PM CST Thu Dec 4 2025

A mix of conditions continue into early this morning as areas of
MVFR clouds and some snow makes its way across the region. Some
pockets of IFR ceilings could be possible. A secondary push of snow
moves across BRD and HYR and maybe DLH Friday morning bringing
reduced visibilities and ceilings. Gusty southerly winds should
continue this weaken, becoming more northwest into Friday for all
terminals except HYR which remains more southwest until Friday
evening.

&&

.MARINE /FOR NEAR SHORE WATERS OF WESTERN LAKE SUPERIOR/...
Issued at 118 PM CST Thu Dec 4 2025

Strong winds are expected across western Lake Superior over the
next 48 hours. Southwesterly winds will continue to increase
this afternoon, reaching gale force with gusts of 35 to 40
knots, particularly along the North Shore and the Outer Apostle
Islands. These strong winds will generate significant waves of 7
to 10 feet, with occasional waves approaching 12 feet near
Grand Portage. Freezing spray is also expected, which can
accumulate ice on vessels. Winds will shift to the west on
Friday and decrease, though hazardous conditions for small
craft may linger into the morning.

For the open water discussion, refer to the NWS Marquette Area
Forecast Discussion at weather.gov/mqt.

&&

.DLH WATCHES/WARNINGS/ADVISORIES...
MN...None.
WI...None.
MARINE...Small Craft Advisory until 10 AM CST Friday for LSZ121-145>148.
     Gale Warning until midnight CST tonight for LSZ140>144-150.

&&

$$

DISCUSSION...KML
AVIATION...Levens
MARINE...KML