Chicago’s Memorial Day weekend forecast calls for a cool, unsettled start before warmer and brighter weather returns by Monday, May 25, 2026. The biggest early concern is not just rain, but dangerous swimming conditions along Lake Michigan beaches.

The National Weather Service said a Beach Hazards Statement remains in effect through Saturday afternoon, May 23, 2026, for Lake County, Northern Cook County and Central Cook County. Waves of 3 to 6 feet are expected, with dangerous currents making swimming conditions life-threatening, especially for inexperienced swimmers.

Chicago Beach Hazards Could Affect Weekend Plans

Beachgoers should use caution before entering the water, even if skies are dry. The weather service advised people to remain out of the water and avoid piers, jetties, breakwalls and other shoreline structures while hazardous conditions continue.

FOX 32 Chicago also reported that waves may reach 3 to 6 feet and rip currents are possible along Lake Michigan beaches.

Rain Chances Stay Limited Before a Warmer Finish

The broader Chicago-area forecast is not a complete washout. Friday, May 22, 2026, and Saturday, May 23, 2026, may bring clouds and scattered rain chances, but several dry periods are still expected.

The National Weather Service forecast for Chicago shows a slight chance of showers Friday night and early Saturday, another rain chance late Saturday night, and a chance of showers or thunderstorms Sunday, May 24, 2026. Memorial Day, Monday, May 25, 2026, is forecast to be mostly sunny with a high near 77 degrees.

Why the Forecast Matters for Chicago Residents

For families planning barbecues, beach visits or outdoor events, the second half of the holiday weekend looks more favorable than the first. The safest approach is to check beach conditions before heading to Lake Michigan and keep flexible plans through Sunday before warmer, sunnier weather arrives on Memorial Day.