FZUS53 KLOT 231442 SRFLOT Surf Zone Forecast for Lake Michigan Beaches National Weather Service Chicago IL 942 AM CDT Sun Aug 23 2026 ILZ006-241445- Lake- Including the beaches of Illinois Beach State Park 942 AM CDT Sun Aug 23 2026 .REST OF TODAY... Swim Risk*..................Low. Wave Height.................1 to 3 ft. Water Temperature...........71-75. Weather.....................Sunny, then becoming partly cloudy. High Temperature............In the mid 70s. Winds.......................Northwest winds 10 to 15 mph becoming northeast around 10 mph this afternoon. .TONIGHT... Swim Risk*..................Low. Wave Height.................1 to 3 feet. Weather.....................Mostly clear. Low Temperature.............In the upper 50s. Winds.......................Northeast winds 5 to 10 mph becoming northwest. .MONDAY... Swim Risk*..................Low. Wave Height.................1 to 3 feet. Weather.....................Mostly sunny. High Temperature............In the mid 70s. Winds.......................Northwest winds around 5 mph, becoming northeast late. .SWIM RISK OUTLOOK... .MONDAY NIGHT...Low swim risk*. .TUESDAY...Low swim risk*. .TUESDAY NIGHT...Low swim risk*. .WEDNESDAY...Low swim risk*. .WEDNESDAY NIGHT...Low swim risk*. .THURSDAY...Low swim risk*. && Swim Risk Category * Low Risk - Large waves and dangerous currents are not expected, however dangerous currents may exist at any time near piers, breakwalls, and river outlets. * Moderate Risk - Breaking waves and currents are expected. Stay away from dangerous areas like piers, breakwalls, and river outlets. Always have a flotation device with you in the water. * High Risk - Life-threatening waves and currents are expected. Stay out of the water and stay away from dangerous areas like piers and breakwalls. ** For thunderstorm, waterspout, and UV definitions see: https://www.weather.gov/beach/lot $$ ILZ103-104-241445- Northern Cook-Central Cook- Including the beaches of Chicago Park District 942 AM CDT Sun Aug 23 2026 .REST OF TODAY... Swim Risk*..................Moderate. Wave Height.................2 to 4 feet subsiding to 1 to 3 ft late this afternoon. Water Temperature...........71-75. Weather.....................Mostly sunny, then becoming partly cloudy. High Temperature............In the mid 70s. Winds.......................Northwest winds 10 to 15 mph becoming northeast around 10 mph this afternoon. .TONIGHT... Swim Risk*..................Low. Wave Height.................1 to 3 feet. Weather.....................Mostly clear. Low Temperature.............In the lower 60s. Winds.......................Northeast winds 5 to 10 mph becoming northwest. .MONDAY... Swim Risk*..................Low. Wave Height.................1 to 3 feet. Weather.....................Mostly sunny. High Temperature............In the mid 70s. Winds.......................West winds around 5 mph, becoming north in the afternoon. .SWIM RISK OUTLOOK... .MONDAY NIGHT...Low swim risk*. .TUESDAY...Low swim risk*. .TUESDAY NIGHT...Low swim risk*. .WEDNESDAY...Low swim risk*. .WEDNESDAY NIGHT...Low swim risk*. .THURSDAY...Low swim risk*. && Swim Risk Category * Low Risk - Large waves and dangerous currents are not expected, however dangerous currents may exist at any time near piers, breakwalls, and river outlets. * Moderate Risk - Breaking waves and currents are expected. Stay away from dangerous areas like piers, breakwalls, and river outlets. Always have a flotation device with you in the water. * High Risk - Life-threatening waves and currents are expected. Stay out of the water and stay away from dangerous areas like piers and breakwalls. ** For thunderstorm, waterspout, and UV definitions see: https://www.weather.gov/beach/lot $$ INZ001-241445- Lake- Including the beaches of Indiana Dunes National Park 942 AM CDT Sun Aug 23 2026 .REST OF TODAY... Swim Risk*..................Moderate. Wave Height.................2 to 4 feet. Water Temperature...........69-73. Weather.....................Mostly sunny, then becoming partly cloudy. High Temperature............In the mid 70s. Winds.......................Northwest winds 10 to 20 mph becoming northeast 10 to 15 mph this afternoon. .TONIGHT... Swim Risk*..................Moderate. Wave Height.................2 to 4 feet subsiding to 1 to 3 ft. Weather.....................Mostly clear. Low Temperature.............In the lower 60s. Winds.......................North winds 5 to 10 mph, becoming northwest in the late evening and overnight. .MONDAY... Swim Risk*..................Low. Wave Height.................1 to 3 feet. Weather.....................Mostly sunny, then becoming partly cloudy. High Temperature............In the mid 70s. Winds.......................West winds around 5 mph, becoming north in the afternoon. .SWIM RISK OUTLOOK... .MONDAY NIGHT...Low swim risk*. .TUESDAY...Low swim risk*. .TUESDAY NIGHT...Low swim risk*. .WEDNESDAY...Low swim risk*. .WEDNESDAY NIGHT...Low swim risk*. .THURSDAY...Low swim risk*. && Swim Risk Category * Low Risk - Large waves and dangerous currents are not expected, however dangerous currents may exist at any time near piers, breakwalls, and river outlets. * Moderate Risk - Breaking waves and currents are expected. Stay away from dangerous areas like piers, breakwalls, and river outlets. Always have a flotation device with you in the water. * High Risk - Life-threatening waves and currents are expected. Stay out of the water and stay away from dangerous areas like piers and breakwalls. ** For thunderstorm, waterspout, and UV definitions see: https://www.weather.gov/beach/lot $$ INZ002-241445- Porter- Including the beaches of Indiana Dunes National Park 942 AM CDT Sun Aug 23 2026 ...BEACH HAZARDS STATEMENT IN EFFECT THROUGH THIS EVENING... .REST OF TODAY... Swim Risk*..................High. Wave Height.................3 to 5 feet. Water Temperature...........69-73. Weather.....................Mostly sunny. High Temperature............In the lower 70s. Winds.......................Northwest winds 10 to 20 mph becoming northeast 10 to 15 mph this afternoon. .TONIGHT... Swim Risk*..................High. Wave Height.................3 to 5 feet subsiding to 2 to 4 ft. Weather.....................Mostly clear. Low Temperature.............In the lower 60s. Winds.......................North winds 5 to 10 mph, becoming west late. .MONDAY... Swim Risk*..................Low. Wave Height.................1 to 3 feet. Weather.....................Mostly sunny. High Temperature............In the lower 70s. Winds.......................West winds around 5 mph, becoming north in the afternoon. .SWIM RISK OUTLOOK... .MONDAY NIGHT...Low swim risk*. .TUESDAY...Low swim risk*. .TUESDAY NIGHT...Low swim risk*. .WEDNESDAY...Low swim risk*. .WEDNESDAY NIGHT...Low swim risk*. .THURSDAY...Low swim risk*. && Swim Risk Category * Low Risk - Large waves and dangerous currents are not expected, however dangerous currents may exist at any time near piers, breakwalls, and river outlets. * Moderate Risk - Breaking waves and currents are expected. Stay away from dangerous areas like piers, breakwalls, and river outlets. Always have a flotation device with you in the water. * High Risk - Life-threatening waves and currents are expected. Stay out of the water and stay away from dangerous areas like piers and breakwalls. ** For thunderstorm, waterspout, and UV definitions see: https://www.weather.gov/beach/lot $$