Duluth, Minnesota 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

646
FXUS63 KDLH 100832
AFDDLH

Area Forecast Discussion
National Weather Service Duluth MN
332 AM CDT Sun Aug 10 2025

.KEY MESSAGES...

- Less muggy and a little cooler for the next few days.

- Isolated to scattered showers north-central Minnesota, plus
  some rumbles of thunder over northwest Wisconsin.

- Periodic shower and thunderstorm chances return for next week
  along with near normal temperatures.

&&

.DISCUSSION...
Issued at 323 AM CDT Sun Aug 10 2025

The cold front slowly sliding through the area yesterday and
overnight has stalled over northwest Wisconsin, and may cause
some showers and storms there late this morning through the
afternoon hours. There is enough instability for some rumbles of
thunder, but not enough for stronger storms. Behind the front,
a much more comfortable airmass has moved into the area. High
temperatures today over northern Minnesota will on the be in the
mid 70s to around 80, instead of the warmer temps we have had
the last few days. The cooler airmass moving in will bring
overnight low temps down to near or below 60 for the first time
in several days. The cold front finally moves east of the
forecast area by Monday.

The main upper low which has been the main driver of this
rather active pattern will push another shortwave through the
area late Monday into Tuesday. The generally drier airmass which
has moved into the area should keep instability from building
up. While we should get some afternoon and night time showers
and thunderstorms, the probability of severe weather is low.

The upper level trough shifts east, allowing a flattish ridge
to build in for Wednesday. Additional short waves will move
through the upper level flow beginning Thursday through next
weekend, bringing chances for showers and thunderstorms. There
are some indications there may be some chances in the region for
strong to severe storms Thursday into Friday. This pattern will
also allow heat to build back into the area, with temperatures
creeping back above normal for Friday into the weekend.

&&

.AVIATION /06Z TAFS THROUGH 06Z MONDAY/...
Issued at 1227 AM CDT Sun Aug 10 2025

Scattered showers near KINL will continue another couple hours
before moving off to the northeast by 08z. LLWS is forecast at
KHIB for another couple hours as well, with southwest winds of
up to 38kts aloft that gradually diminishes by 09z. Some IFR
visibility in fog and low stratus is likely to develop at KHYR,
IFR fog potential at KHIB/KDLH/KBRD is less than 30% as winds
may be just strong enough to prevent fog formation there
tonight. KHYR ceilings should improve to VFR by late morning,
with all other TAF sites primarily remaining VFR with diurnal
cumulus for much of Sunday. There may be scattered showers and
perhaps an embedded thunderstorm near KHYR and also KINL this
afternoon, but the chances are too low to include in the TAF at
this time.

&&

.MARINE /FOR NEAR SHORE WATERS OF WESTERN LAKE SUPERIOR/...
Issued at 323 AM CDT Sun Aug 10 2025

A cold front which has moved through the area yesterday and
overnight will cause winds to be southwesterly and continue
through at least Monday, mostly from 5 to 15 knots. A period of
stronger southwest winds of up to 20 knots will develop along
the North Shore north of Taconite Harbor this afternoon, causing
locally built up waves. A Small Craft Advisory does not appear
needed at this time. The winds begin to veer into the west on
Tuesday, but mostly in the 5 to 15 knot range with waves of less
than 2 feet.

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...None.

&&

$$

DISCUSSION...LE
AVIATION...LE
MARINE...LE