textproduct: Milwaukee/Sullivan

KEY MESSAGES

- Dry weather under high pressure expected through the weekend and into next week. Fire weather concerns may increase into early next week.

SHORT TERM

Issued 203 PM CDT Thu May 28 2026

Tonight through Friday night:

Northeasterly breezes expected to continue through this evening before becoming calm after sunset as high pressure settles over the area. A few areas of patchy fog are possible in low lying areas tonight, but dewpoints in the low 40s will prevent most areas from seeing reduced visibilities as air temps will only fall into the mid-40s. Any fog that does develop will burn off shortly after sunrise Friday as temperatures climb quickly into the upper 50s to low 60s for the morning commutes. Highs in the low to mid 80s are expected from the Kettle Moraine westward, with highs in the upper 70s to low 80s east of the Kettle Moraine. A lake breeze will push inland during the afternoon hours Friday, bringing highs right at Lake Michigan down into the 60s. Relative humidity values may dip into the low 20s, but with minimal winds not expecting fire weather impacts. Friday night, winds become calm once again and lows in the mid 50s are expected. Not anticipating fog development Friday night due to warmer lows and continued dewpoints in the 40s.

MH

LONG TERM

Issued 203 PM CDT Thu May 28 2026

Saturday through Thursday:

A brief backdoor cold front will reinforce high pressure Saturday, bringing highs in the 70s. Sunday, with high pressure overhead, expect temperatures to recover slightly inland into the upper 70s to low 80s. Near Lake Michigan, still expecting afternoon lake breeze influence to keep temperatures lower. Light southeasterly winds are expected through the day Sunday. An additional backdoor cold front sweeps inland from Lake Michigan on Monday afternoon, but the majority of southern Wisconsin will still see highs in the 80s. A few showers and thunderstorms may develop along this front during the afternoon and evening hours (10-20% chance). Fire weather concerns may develop Monday as fuels continue to dry ahead of the front and gusty conditions develop behind the front. High pressure continues to dominate through the end of the week, with highs in the upper 80s becoming possible by Thursday.

MH

AVIATION

Issued 203 PM CDT Thu May 28 2026

VFR conditions and northeasterly winds through this evening, with winds becoming calm overnight. VFR conditions continue through tonight and into Friday, aside from low potential of patchy ground fog lowering visibilities to MVFR. Light southeasterly winds are expected to develop Friday morning in far southern Wisconsin, with light and variable to calm winds in central Wisconsin. An easterly to southeasterly lake breeze is expected during the afternoon Friday, with gusts only around 10 kt.

MH

MARINE

Issued 203 PM CDT Thu May 28 2026

High pressure around 30.3 inches will dominate the weather pattern through the weekend into early next week. Light and variable winds are expected, with periods of northeasterly prevailing winds Friday night into Saturday, and again Monday into Monday night as weak cold fronts move southward through the Lake. Winds are expected to remain northerly into Tuesday as low pressure begins to develop in the southern Plains.

MH

MKX WATCHES/WARNINGS/ADVISORIES

WI...None. LM...None.