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KEY MESSAGES

- Extended period of dry weather with temperatures cooling close to normal for this time of year.

DISCUSSION

Issued at 318 AM EDT Thu May 28 2026

Surface high pressure settles across the Great Lakes today into Friday beneath increasing subsidence aloft as a ridge/trough inflection point becomes established over the region. This will support mainly dry weather along with temperatures settling closer to late May normals. Highs through the end of the week are expected to generally range through the 70s to low 80s with overnight lows falling into the 40s for may locations.

A cold front dropping south into the eastern Great Lakes later Friday into Saturday, looks to deliver a reinforcing shot of cooler air into northern Michigan along with another opportunity for a few light showers. Guidance continues to trend toward cooler daytime temperatures Saturday, especially across northeast Lower and eastern Upper where highs may struggle to reach the mid to upper 60s, while areas farther southwest likely remain milder in 70s.

Beyond that, the broader pattern relaxes heading into Sunday and early next week, allowing temperatures to moderate back toward seasonal normals for the beginning of June. Overall precipitation chances continue to appear limited through the extended as surface high pressure remains a dominant feature.

AVIATION /12Z TAFS THROUGH 12Z FRIDAY/

Issued at 614 AM EDT Thu May 28 2026

VFR conditions will remain in place across northern Michigan for the foreseeable future. Prevailing light north-northeast winds will allow for lake breeze formation to push inland from most lakeshore areas this afternoon before weak/calm winds settle in tonight.

APX WATCHES/WARNINGS/ADVISORIES

MI...None. MARINE...None.