FZUS53 KLOT 090941 SRFLOT Surf Zone Forecast for Lake Michigan Beaches National Weather Service Chicago IL 441 AM CDT Thu Jul 9 2026 ILZ006-100945- Lake- Including the beaches of Illinois Beach State Park 441 AM CDT Thu Jul 9 2026 .TODAY... Swim Risk*..................Low. Wave Height.................Around 1 foot. Water Temperature...........68-72. Weather.....................Mostly cloudy. Scattered showers and thunderstorms. High Temperature............In the lower 80s. Winds.......................Southwest winds 5 to 10 mph, becoming northeast late in the afternoon. .TONIGHT... Swim Risk*..................Low. Wave Height.................1 to 3 feet. Weather.....................Mostly cloudy. Scattered showers and thunderstorms. Areas of fog. Low Temperature.............In the mid 60s. Winds.......................Northeast winds 10 to 15 mph. .FRIDAY... Swim Risk*..................Low. Wave Height.................1 to 3 feet. Weather.....................Mostly cloudy. Patchy fog in the morning. High Temperature............In the mid 70s. Winds.......................Northeast winds 5 to 10 mph. .SWIM RISK OUTLOOK... .FRIDAY NIGHT...Low swim risk*. .SATURDAY...Low swim risk*. .SATURDAY NIGHT...Low swim risk*. .SUNDAY...Low swim risk*. .SUNDAY NIGHT...Low swim risk*. .MONDAY...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 $$ ILZ103-104-100945- Northern Cook-Central Cook- Including the beaches of Chicago Park District 441 AM CDT Thu Jul 9 2026 .TODAY... Swim Risk*..................Low. Wave Height.................Around 1 foot. Water Temperature...........69-73. Weather.....................Mostly cloudy. Scattered showers and thunderstorms. High Temperature............In the lower 80s. Winds.......................Southwest winds 5 to 10 mph. .TONIGHT... Swim Risk*..................Low. Wave Height.................1 to 3 feet. Weather.....................Mostly cloudy. Scattered showers and thunderstorms. Areas of fog. Low Temperature.............In the upper 60s. Winds.......................Northeast winds 10 to 15 mph. .FRIDAY... Swim Risk*..................Low. Wave Height.................1 to 3 feet. Weather.....................Mostly cloudy. Patchy fog in the morning. High Temperature............In the upper 70s. Winds.......................North winds 5 to 10 mph. .SWIM RISK OUTLOOK... .FRIDAY NIGHT...Low swim risk*. .SATURDAY...Low swim risk*. .SATURDAY NIGHT...Low swim risk*. .SUNDAY...Low swim risk*. .SUNDAY NIGHT...Low swim risk*. .MONDAY...Low swim risk*. && Swim Risk Category * Low Risk - Large waves and dangerous currents are not expected, however dangerous currents may exist at any time near piers, breakwalls, and river outlets. * Moderate Risk - Breaking waves and currents are expected. Stay away from dangerous areas like piers, breakwalls, and river outlets. Always have a flotation device with you in the water. * High Risk - Life-threatening waves and currents are expected. Stay out of the water and stay away from dangerous areas like piers and breakwalls. ** For thunderstorm, waterspout, and UV definitions see: https://www.weather.gov/beach/lot $$ INZ001-100945- Lake- Including the beaches of Indiana Dunes National Park 441 AM CDT Thu Jul 9 2026 .TODAY... Swim Risk*..................Low. Wave Height.................Around 1 foot. Water Temperature...........71-75. Weather.....................Mostly cloudy. Scattered showers and thunderstorms. High Temperature............In the lower 80s. Winds.......................Southwest winds 5 to 10 mph. .TONIGHT... Swim Risk*..................Low. Wave Height.................Around 1 foot building to 1 to 3 feet. Weather.....................Mostly cloudy. Scattered showers and thunderstorms. Areas of fog. Low Temperature.............Around 70. Winds.......................Southwest winds 5 to 10 mph, becoming northeast 10 to 15 mph by mid evening. .FRIDAY... Swim Risk*..................Low. Wave Height.................1 to 3 feet. Weather.....................Mostly cloudy. Patchy fog in the morning. High Temperature............In the mid 70s. Winds.......................North winds 5 to 10 mph. .SWIM RISK OUTLOOK... .FRIDAY NIGHT...Low swim risk*. .SATURDAY...Low swim risk*. .SATURDAY NIGHT...Low swim risk*. .SUNDAY...Low swim risk*. .SUNDAY NIGHT...Low swim risk*. .MONDAY...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 $$ INZ002-100945- Porter- Including the beaches of Indiana Dunes National Park 441 AM CDT Thu Jul 9 2026 .TODAY... Swim Risk*..................Low. Wave Height.................Around 1 foot. Water Temperature...........71-75. Weather.....................Mostly cloudy. Scattered showers and thunderstorms. High Temperature............Around 80. Winds.......................Southwest winds around 10 mph, becoming west in the afternoon. .TONIGHT... Swim Risk*..................Low. Wave Height.................Around 1 foot building to 1 to 3 feet. Weather.....................Mostly cloudy. Scattered showers and thunderstorms. Areas of fog. Low Temperature.............Around 70. Winds.......................Southwest winds 5 to 10 mph, becoming north 10 to 15 mph by mid evening. .FRIDAY... Swim Risk*..................Low. Wave Height.................1 to 3 feet. Weather.....................Mostly cloudy. Patchy fog in the morning. High Temperature............In the mid 70s. Winds.......................North winds 5 to 10 mph. .SWIM RISK OUTLOOK... .FRIDAY NIGHT...Low swim risk*. .SATURDAY...Low swim risk*. .SATURDAY NIGHT...Low swim risk*. .SUNDAY...Low swim risk*. .SUNDAY NIGHT...Low swim risk*. .MONDAY...Low swim risk*. && Swim Risk Category * Low Risk - Large waves and dangerous currents are not expected, however dangerous currents may exist at any time near piers, breakwalls, and river outlets. * Moderate Risk - Breaking waves and currents are expected. Stay away from dangerous areas like piers, breakwalls, and river outlets. Always have a flotation device with you in the water. * High Risk - Life-threatening waves and currents are expected. Stay out of the water and stay away from dangerous areas like piers and breakwalls. ** For thunderstorm, waterspout, and UV definitions see: https://www.weather.gov/beach/lot $$