Duluth, Minnesota 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

996
FXUS63 KDLH 150550
AFDDLH

Area Forecast Discussion
National Weather Service Duluth MN
1250 AM CDT Wed Oct 15 2025

.KEY MESSAGES...

- Chance for light rain showers this evening, most likely over
  the I-35 corridor and NW WI. Accumulations should largely be
  light, less than 0.25".

- Temperatures gradually warming through the work week, hottest
  on Friday with highs in the 60s and 70s.

- Next chance for rain late Wednesday through Thursday with
  scattered shower chances into the weekend.

&&

.DISCUSSION...
Issued at 131 PM CDT Tue Oct 14 2025

Overcast skies today should turn into some light rain showers over
portions of the Northland this evening as a little ridge running
disturbance quickly passes over the Upper Midwest. With a fair
amount of dry air to the north, there will likely be plenty of virga
initially, with the best chance of measurable rainfall accumulations
in the southern third of the CWA. Even these should be light, mostly
around or less than a tenth of an inch.

As that disturbance passes, upper level ridging should continue to
elongate over the Plains and Midwest through late week, leading to
increasing temperatures and dewpoints. By Friday, temperatures are
expected to be well above normal in the 60s and 70s during the
afternoon, with dewpoints in the low to mid 50s. This increase in
moisture alongside an ejecting Colorado Low will help create an
atmospheric utopia for another chance at rain later this week. Most
models are in fairly good agreement on warm frontal rain pushing
into the area from this system into and through Thursday morning,
which should likely be the heaviest rain out of this system as it
will have the best moisture access and thermodynamics. The first
round of rain could bring a tenth to three quarters of an inch of
rainfall to the area, likely highest in the MN Arrowhead, but exact
system track could still change. This low pressure system should
continue to influence our sensible weather through the weekend, with
the cold front passing through on Friday and then wrap around
showers on the backside wandering over Saturday and Sunday.
Temperatures should fall in the CAA on the backside of this system,
and its not out of the question that a couple snowflakes could mix
in through the weekend as 850mb temperatures fall to around 0C.

High pressure is generally favored for early next week but there are
large discrepancies on magnitude and timing with some models keeping
us dry for a couple days while other solutions bring another quick
round of precipitation in from the Canadian Plains. In all solutions
however, we generally stay in a moderately active pattern through
next week with more chances of rain, with a couple outliers bringing
some frozen precipitation into the mix.

&&

.AVIATION /06Z TAFS THROUGH 06Z THURSDAY/...
Issued at 1249 AM CDT Wed Oct 15 2025

Mostly VFR conditions persist at the terminals as of issuance
time. KDLH has been affected by easterly flow off the lake and
has IFR ceilings, which should persist overnight, though it may
be intermittent at times. During the day we expect it to lift
to MVFR before scattering out during the afternoon hours. There
is a chance for it to return again after 03z tonight as the
easterly flow continues, but confidence remains low for now.
MVFR ceilings should spread into KBRD and KHYR after 08z, and
linger at KBRD through the remainder of the TAF period. KHYR
should lower a few hours later, but break up to VFR during the
afternoon. VFR conditions are expected to continue through the
TAF period for KHIB and KINL. Expect predominately light and
variable to calm winds through the TAF period.

&&

.MARINE /FOR NEAR SHORE WATERS OF WESTERN LAKE SUPERIOR/...
Issued at 131 PM CDT Tue Oct 14 2025

Mostly light northeast winds today continue into tomorrow. A couple
afternoon gusts up to 15 knots are possible for the head of the lake
Wednesday afternoon. Generally waves should remain at 1 foot or
less. A 20-30% chance for some very light rain tonight but no
thunderstorms are expected. Winds become southeast Thursday with a
few gusts up to 20 knots possible which should lead to some bumpy
conditions but nothing too much crazier. Another round of rain is
likely Thursday especially along the North Shore.

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...Levens
AVIATION...LE
MARINE...Levens