Water Temperature of Lake Michigan Near Winthrop Harbor, IL

Current Water Temperature

53.4°F 11.9°C
Cold Thermal Gear Required
53.4°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Cold shock risk with rapid dexterity loss (10–15 mins). Wetsuit or drysuit strongly advised for any immersion.

Measurement Time: Friday, October 30, 2026, 1:50 PM CDT

Temperature Locations

View Nearby Locations     View All Illinois Locations     View Locations Near Me

Local Points of Interest

Pleasant Prairie, WI

Sponsored Content

Lake Michigan

Station Name: Winthrop Harbor Buoy, IL
Station Type: Buoy
Data Source: National Data Buoy Center

Elevation Above Sea Level: 574 feet

Nearest Address:
Offshore
Winthrop Harbor, IL 60096
Lake County

GPS Coordinates: 42.491, -87.779

Nearby Water Temperatures

Lake Michigan, Waukegan, IL (8.5 mi)
Lake Michigan, Racine, WI (16.1 mi)
Fox River, Burlington, WI (24.2 mi)
Lake Michigan, Wilmette, IL (25.4 mi)
Fox River, McHenry, IL (26.8 mi)
Root River, Franklin, WI (27.4 mi)
Lake Michigan, Milwaukee, WI (37.3 mi)
Honey Creek, Wauwatosa, WI (39.9 mi)
Lake Michigan, Lake Michigan, MI (40.3 mi)
Eagle Spring Lake, Mukwonago, WI (41.7 mi)
Lake Michigan, Chicago, IL (42.8 mi)
Chicago River, Chicago, IL (45.4 mi)
Cal-Sag Channel, Blue Island, IL (58.2 mi)
Grand Calumet River, Chicago, IL (59.2 mi)
Indiana Harbor Canal, East Chicago, IN (60.3 mi)

Weather Near Winthrop Harbor, Illinois

Current Weather

39°F
Overcast
Conditions: Overcast
Humidity: 81%
Feels Like: 33.1°F
Wind: WNW 5.5 mph
Wind Gusts: 7.4 mph
Pressure: 29.95 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 11.3 mi
UV Index: 0

Weather Forecast

Overcast
Wed
H: 52°F
L: 39°F
Heavy Snow
Thu
H: 44°F
L: 35°F
Overcast
Fri
H: 42°F
L: 32°F
Overcast
Sat
H: 43°F
L: 33°F
Overcast
Sun
H: 46°F
L: 37°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
7.2 μg/m³
Good
PM10
7.4 μg/m³
Good
Ozone (O3)
13 μg/m³
Photochemical
NO2
32.1 μg/m³
Nitrogen Dioxide
SO2
0.9 μg/m³
Sulfur Dioxide
CO
275 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 55m daylight
Sunrise 6:38 AM
Solar Noon 11:35 AM
Sunset 4:33 PM
Moon
New • 2%
Moonrise 9:16 AM
Transit 1:31 PM
Moonset 5:45 PM

Best Times for Fishing or Hunting

Major Periods

12:35 AM - 3:05 AM
1:01 PM - 3:31 PM

Minor Periods

8:46 AM - 10:16 AM
5:15 PM - 6:45 PM
Action Rating:
Good Action 3/5
Wednesday, November 11, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 44.8°F
Average Humidity: 80%
Chance of Rain: 39%
Wind: 17.7 mph
UV Index: 1.2

Air Quality

EPA Index 1 • Good
PM2.5
7.6 μg/m³
Good
PM10
8.3 μg/m³
Good
Ozone (O3)
41 μg/m³
Photochemical
NO2
23.9 μg/m³
Nitrogen Dioxide
SO2
2.2 μg/m³
Sulfur Dioxide
CO
211.1 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 55m daylight
Sunrise 6:38 AM
Solar Noon 11:35 AM
Sunset 4:33 PM
Moon
New • 2%
Moonrise 9:16 AM
Transit 1:31 PM
Moonset 5:45 PM

Best Times for Fishing or Hunting

Major Periods

12:35 AM - 3:05 AM
1:01 PM - 3:31 PM

Minor Periods

8:46 AM - 10:16 AM
5:15 PM - 6:45 PM
Action Rating:
Good Action 3/5
Thursday, November 12, 2026

Weather Forecast

Conditions: Heavy Snow
Average Temperature: 38.8°F
Average Humidity: 82%
Chance of Rain: 42%
Wind: 28.7 mph
UV Index: 1.6

Air Quality

EPA Index 1 • Good
PM2.5
0.6 μg/m³
Good
PM10
0.6 μg/m³
Good
Ozone (O3)
69 μg/m³
Photochemical
NO2
1.9 μg/m³
Nitrogen Dioxide
SO2
0.2 μg/m³
Sulfur Dioxide
CO
125.6 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 53m daylight
Sunrise 6:39 AM
Solar Noon 11:35 AM
Sunset 4:32 PM
Moon
Waxing Crescent • 6%
Moonrise 10:10 AM
Transit 2:23 PM
Moonset 6:37 PM

Best Times for Fishing or Hunting

Major Periods

1:27 AM - 3:57 AM
1:53 PM - 4:23 PM

Minor Periods

9:40 AM - 11:10 AM
6:07 PM - 7:37 PM
Action Rating:
Good Action 3/5
Friday, November 13, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 37°F
Average Humidity: 65%
Chance of Rain: 7%
Wind: 13.9 mph
UV Index: 2

Air Quality

EPA Index 1 • Good
PM2.5
0.6 μg/m³
Good
PM10
0.7 μg/m³
Good
Ozone (O3)
74.5 μg/m³
Photochemical
NO2
2.1 μg/m³
Nitrogen Dioxide
SO2
0.2 μg/m³
Sulfur Dioxide
CO
128.1 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 51m daylight
Sunrise 6:40 AM
Solar Noon 11:35 AM
Sunset 4:31 PM
Moon
Waxing Crescent • 13%
Moonrise 10:55 AM
Transit 3:13 PM
Moonset 7:35 PM

Best Times for Fishing or Hunting

Major Periods

2:18 AM - 4:48 AM
2:43 PM - 5:13 PM

Minor Periods

10:25 AM - 11:55 AM
7:05 PM - 8:35 PM
Action Rating:
Fair Action 2/5
Saturday, November 14, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 38.5°F
Average Humidity: 70%
Chance of Rain: 3%
Wind: 11.8 mph
UV Index: 2.8

Air Quality

EPA Index 1 • Good
PM2.5
0.9 μg/m³
Good
PM10
0.9 μg/m³
Good
Ozone (O3)
68.3 μg/m³
Photochemical
NO2
2.9 μg/m³
Nitrogen Dioxide
SO2
0.4 μg/m³
Sulfur Dioxide
CO
145.2 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 48m daylight
Sunrise 6:41 AM
Solar Noon 11:35 AM
Sunset 4:30 PM
Moon
Waxing Crescent • 21%
Moonrise 11:32 AM
Transit 4:02 PM
Moonset 8:38 PM

Best Times for Fishing or Hunting

Major Periods

3:08 AM - 5:38 AM
3:32 PM - 6:02 PM

Minor Periods

11:02 AM - 12:32 PM
8:08 PM - 9:38 PM
Action Rating:
Fair Action 2/5
Sunday, November 15, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 41.7°F
Average Humidity: 65%
Chance of Rain: 3%
Wind: 8 mph
UV Index: 2.8

Air Quality

EPA Index 1 • Good
PM2.5
0.2 μg/m³
Good
PM10
0.2 μg/m³
Good
Ozone (O3)
64 μg/m³
Photochemical
NO2
1 μg/m³
Nitrogen Dioxide
SO2
0.4 μg/m³
Sulfur Dioxide
CO
152.6 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 46m daylight
Sunrise 6:43 AM
Solar Noon 11:35 AM
Sunset 4:29 PM
Moon
Waxing Crescent • 31%
Moonrise 12:03 PM
Transit 4:48 PM
Moonset 9:42 PM

Best Times for Fishing or Hunting

Major Periods

3:55 AM - 6:25 AM
4:18 PM - 6:48 PM

Minor Periods

11:33 AM - 1:03 PM
9:12 PM - 10:42 PM
Action Rating:
Very Good 4/5
The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

Webcams Near Winthrop Harbor, IL

Sponsored Content