Water Temperature of Lake Michigan Near Winthrop Harbor, IL

Current Water Temperature

60.6°F

Measurement Time: Monday, June 8, 2026, 10:40 AM CDT

Temperature Locations

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Local Points of Interest

Pleasant Prairie, WI

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

82°F
Clear
Clear
90.9°F
83.6°F
82%
SSW 11.4 mph
21.8 mph
78.4°F
73.7°F
0 in
0%
9 mi
1012 mbar
0

Five Day Weather Forecast

Sunny
Tue
H: 94°F
L: 78°F
Sunny
Wed
H: 89°F
L: 74°F
Sunny
Thu
H: 89°F
L: 77°F
Sunny
Fri
H: 86°F
L: 74°F
Mist
Sat
H: 78°F
L: 63°F

Air Quality

AQI: 1 - Good
PM2.5: 9.4 μg/m3
PM10: 11 μg/m3
Carbon Monoxide: 128 μg/m3
Nitrogen Dioxide: 7.8 μg/m3
Sulphur Dioxide: 2.2 μg/m3
Ozone: 68 μg/m3

Astronomical

Sunrise: 5:17 AM
Sun Transit: 12:54 AM
Sunset: 8:33 PM
Daylight: 15 hrs 16 mins
Moonrise: 9:31 PM
Moon Transit: 1:08 AM
Moonset: 5:27 AM
Moon Phase: Full
Moon Illumination: 98.6%

Best Times for Fishing or Hunting

Major Periods

12:38 AM - 3:08 AM
1:22 PM - 3:52 PM

Minor Periods

9:01 PM - 10:31 PM
4:57 AM - 6:27 AM

Action Rating: 5 out of 5

Small Craft Advisory issued June 29 at 2:11PM CDT until June 29 at 10:00PM CDT by NWS Chicago IL

Effective: Mon June 29, 2026, 2:11 PM
Expires: Mon June 29, 2026, 10:00 PM

* WHAT...South winds up to 25 kt and significant waves up to 4 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Tuesday, June 30, 2026

Weather Forecast

Sunny
94.1°F
77.5°F
82.9°F
75%
0 in
7%
0%
16.8 mph
9.9


Air Quality

AQI: 1 - Good
PM2.5: 14.81 μg/m3
PM10: 20.05 μg/m3
Carbon Monoxide: 128.33 μg/m3
Nitrogen Dioxide: 5.98 μg/m3
Sulphur Dioxide: 1.68 μg/m3
Ozone: 88.71 μg/m3

Astronomical

Sunrise: 5:17 AM
Sun Transit: 12:54 AM
Sunset: 8:33 PM
Daylight: 15 hrs 16 mins
Moonrise: 9:31 PM
Moon Transit: 1:08 AM
Moonset: 5:27 AM
Moon Phase: Full
Moon Illumination: 98.6%

Best Times for Fishing or Hunting

Major Periods

12:38 AM - 3:08 AM
1:22 PM - 3:52 PM

Minor Periods

9:01 PM - 10:31 PM
4:57 AM - 6:27 AM

Action Rating: 5 out of 5

Wednesday, July 1, 2026

Weather Forecast

Sunny
89.1°F
74.2°F
81.9°F
73%
0 in
7%
0%
15.4 mph
10.2


Air Quality

AQI: 2 - Moderate
PM2.5: 16.28 μg/m3
PM10: 23.95 μg/m3
Carbon Monoxide: 126.5 μg/m3
Nitrogen Dioxide: 5.15 μg/m3
Sulphur Dioxide: 1.34 μg/m3
Ozone: 94.58 μg/m3

Astronomical

Sunrise: 5:17 AM
Sun Transit: 12:55 AM
Sunset: 8:33 PM
Daylight: 15 hrs 15 mins
Moonrise: 10:03 PM
Moon Transit: 1:58 AM
Moonset: 6:31 AM
Moon Phase: Full
Moon Illumination: 94.7%

Best Times for Fishing or Hunting

Major Periods

1:28 AM - 3:58 AM
2:10 PM - 4:40 PM

Minor Periods

9:33 PM - 11:03 PM
6:01 AM - 7:31 AM

Action Rating: 3 out of 5

Thursday, July 2, 2026

Weather Forecast

Sunny
89.2°F
76.9°F
82.4°F
73%
0.07 in
57%
0%
14.5 mph
10.1


Air Quality

AQI: 1 - Good
PM2.5: 8.15 μg/m3
PM10: 9.54 μg/m3
Carbon Monoxide: 123.54 μg/m3
Nitrogen Dioxide: 6.83 μg/m3
Sulphur Dioxide: 1.57 μg/m3
Ozone: 98 μg/m3

Astronomical

Sunrise: 5:18 AM
Sun Transit: 12:55 AM
Sunset: 8:32 PM
Daylight: 15 hrs 14 mins
Moonrise: 10:29 PM
Moon Transit: 2:45 AM
Moonset: 7:36 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.5%

Best Times for Fishing or Hunting

Major Periods

2:15 AM - 4:45 AM
2:57 PM - 5:27 PM

Minor Periods

9:59 PM - 11:29 PM
7:06 AM - 8:36 AM

Action Rating: 2 out of 5

Friday, July 3, 2026

Weather Forecast

Sunny
86°F
73.7°F
79.6°F
79%
0.09 in
57%
0%
12.3 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 7.48 μg/m3
PM10: 8.11 μg/m3
Carbon Monoxide: 155.31 μg/m3
Nitrogen Dioxide: 9.05 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 84.38 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 12:55 AM
Sunset: 8:32 PM
Daylight: 15 hrs 14 mins
Moonrise: 10:52 PM
Moon Transit: 3:31 AM
Moonset: 8:43 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.3%

Best Times for Fishing or Hunting

Major Periods

3:01 AM - 5:31 AM
3:41 PM - 6:11 PM

Minor Periods

10:22 PM - 11:52 PM
8:13 AM - 9:43 AM

Action Rating: 3 out of 5

Saturday, July 4, 2026

Weather Forecast

Mist
78.4°F
62.8°F
71.5°F
91%
2.95 in
87%
0%
11.6 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 5.54 μg/m3
PM10: 5.75 μg/m3
Carbon Monoxide: 216.25 μg/m3
Nitrogen Dioxide: 9.73 μg/m3
Sulphur Dioxide: 0.69 μg/m3
Ozone: 51.13 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 12:55 AM
Sunset: 8:32 PM
Daylight: 15 hrs 13 mins
Moonrise: 11:12 PM
Moon Transit: 4:15 AM
Moonset: 9:48 AM
Moon Phase: Waning Gibbous
Moon Illumination: 70.6%

Best Times for Fishing or Hunting

Major Periods

3:45 AM - 6:15 AM
4:24 PM - 6:54 PM

Minor Periods

12:00 AM - 12:00 AM
9:18 AM - 10:48 AM

Action Rating: 2 out of 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.

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