textproduct: Duluth

KEY MESSAGES

- Cooler and drier conditions continue through at least Thursday midday.

- Next chance for precipitation Thursday-Friday.

- A few storms may be strong Thursday night and Friday.

DISCUSSION

Issued at 139 PM CDT Tue Aug 4 2026

Northwesterly flow is bringing a classic August fall teaser today, with breezy winds, a broken altocumulus cloud deck, and dewpoints in the 50s. Even lower dewpoints in the 40s are expected overnight into Wednesday morning, which will likely make for a relatively chilly night tonight. Expect overnight lows in the 40s for most, except right along Lake Superior.

Rinse and repeat tomorrow with a westerly breeze in the afternoon, lower dewpoints, and high temperatures in the 70s.

A little wiggle in the upper level flow Thursday should allow for some moisture and warmth advection back into the area, with dewpoints in the mid to upper 50s and temperatures rising into the 80s. That impulse could also lead to some scattered showers and thunderstorms late Thursday through Friday.

We expect to stay under broad upper level troughing into next week which will keep us on the slightly cooler side. Any upper level shortwaves that move through could bring some passing precipitation chances.

AVIATION /06Z TAFS THROUGH 06Z THURSDAY/

Issued at 1212 AM CDT Wed Aug 5 2026

VFR conditions for all terminals for the TAF period. Fog is possible overnight, though the greatest chances for fog is at HIB, which has a TEMPO for the early morning hours. Diurnal cumulus is expected again this afternoon with cloud bases around 7 kft, and winds will be out of the west to southwest up to 15 kts.

MARINE /FOR NEARSHORE WATERS OF WESTERN LAKE SUPERIOR/

Issued at 139 PM CDT Tue Aug 4 2026

Southwesterly winds are expected today and Wednesday, with some afternoon gusts up to 15 knots possible. Slightly stronger southwest winds are possible Thursday with some gusts of 20-25 knots possible - a Small Craft Advisory may be needed. No precipitation is expected until the end of the week.

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

FIRE WEATHER

Issued at 139 PM CDT Tue Aug 4 2026

Drier weather continues for today and tomorrow. Wednesday, dewpoints in the 40s will make for a noticeably dry day with afternoon RH falling to around 30%. Expect breezy afternoon conditions with west winds gusting 15-20mph. A little more moisture returns Thu-Fri but afternoon RH may still fall into the 35-40% range. Strong southwest winds are possible Thursday, sustained 10-15mph with gusts up to 25mph. There could be some scattered rain showers and thunderstorms late Thursday into Friday, possibly continuing through the weekend.

See the Fire Weather Forecast product for a more thorough breakdown of fire weather conditions.

DLH WATCHES/WARNINGS/ADVISORIES

MN...None. WI...None. MARINE...None.