Water Temperature of Lake Michigan Near Winthrop Harbor, IL

Current Water Temperature

48.9°F

Measurement Time: Tuesday, November 25, 2025, 6:30 AM CST

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

57.4°F
Sunny
Sunny
54.6°F
59.4°F
63%
NNE 12.5 mph
18.3 mph
57.9°F
48.8°F
0 in
0%
9 mi
1010 mbar
2.9

Five Day Weather Forecast

Sunny
Fri
H: 66°F
L: 34°F
Partly Cloudy
Sat
H: 61°F
L: 35°F
Moderate rain
Sun
H: 44°F
L: 35°F
Partly Cloudy
Mon
H: 38°F
L: 27°F
Partly Cloudy
Tue
H: 51°F
L: 32°F

Air Quality

AQI: 1 - Good
PM2.5: 26.45 μg/m3
PM10: 27.15 μg/m3
Carbon Monoxide: 255.85 μg/m3
Nitrogen Dioxide: 21.85 μg/m3
Sulphur Dioxide: 2.25 μg/m3
Ozone: 74 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 9:27 AM
Sunset: 7:03 PM
Daylight: 12 hrs 9 mins
Moonrise: 7:25 AM
Moon Transit: 2:18 PM
Moonset: 9:26 PM
Moon Phase: New
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

1:41 AM - 4:11 AM
1:48 PM - 4:18 PM

Minor Periods

8:56 PM - 10:26 PM
6:55 AM - 8:25 AM

Action Rating: 4 out of 5

Friday, March 20, 2026

Weather Forecast

Sunny
65.8°F
34°F
48.2°F
75%
0 in
0%
0%
13.9 mph
1


Air Quality

AQI: 2 - Moderate
PM2.5: 23.65 μg/m3
PM10: 24.59 μg/m3
Carbon Monoxide: 267.09 μg/m3
Nitrogen Dioxide: 18.42 μg/m3
Sulphur Dioxide: 2.95 μg/m3
Ozone: 65.6 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 9:27 AM
Sunset: 7:03 PM
Daylight: 12 hrs 9 mins
Moonrise: 7:25 AM
Moon Transit: 2:18 PM
Moonset: 9:26 PM
Moon Phase: New
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

1:41 AM - 4:11 AM
1:48 PM - 4:18 PM

Minor Periods

8:56 PM - 10:26 PM
6:55 AM - 8:25 AM

Action Rating: 4 out of 5

Saturday, March 21, 2026

Weather Forecast

Partly Cloudy
60.8°F
35.2°F
46.3°F
82%
0 in
0%
0%
17.2 mph
1.3


Air Quality

AQI: 2 - Moderate
PM2.5: 17.67 μg/m3
PM10: 18.06 μg/m3
Carbon Monoxide: 238.81 μg/m3
Nitrogen Dioxide: 17.14 μg/m3
Sulphur Dioxide: 3.65 μg/m3
Ozone: 80.88 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 12:00 AM
Sunset: 7:05 PM
Daylight: 12 hrs 12 mins
Moonrise: 7:51 AM
Moon Transit: 3:10 PM
Moonset: 10:46 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

2:32 AM - 5:02 AM
2:40 PM - 5:10 PM

Minor Periods

10:16 PM - 11:46 PM
7:21 AM - 8:51 AM

Action Rating: 3 out of 5

Sunday, March 22, 2026

Weather Forecast

Moderate rain
43.5°F
34.5°F
42.8°F
90%
0.45 in
88%
0%
22.6 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 8.24 μg/m3
PM10: 8.32 μg/m3
Carbon Monoxide: 200.77 μg/m3
Nitrogen Dioxide: 8.5 μg/m3
Sulphur Dioxide: 2 μg/m3
Ozone: 74.72 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 12:00 AM
Sunset: 7:06 PM
Daylight: 12 hrs 15 mins
Moonrise: 8:23 AM
Moon Transit: 4:07 PM
Moonset: 12:06 PM
Moon Phase: Waxing Crescent
Moon Illumination: 14.9%

Best Times for Fishing or Hunting

Major Periods

3:27 AM - 5:57 AM
3:37 PM - 6:07 PM

Minor Periods

12:00 AM - 12:00 AM
7:53 AM - 9:23 AM

Action Rating: 2 out of 5

Monday, March 23, 2026

Weather Forecast

Partly Cloudy
38.1°F
27.3°F
32.4°F
74%
0 in
0%
0%
16.8 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 3.59 μg/m3
PM10: 3.7 μg/m3
Carbon Monoxide: 197.61 μg/m3
Nitrogen Dioxide: 6.49 μg/m3
Sulphur Dioxide: 1.67 μg/m3
Ozone: 86.88 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 12:00 AM
Sunset: 7:07 PM
Daylight: 12 hrs 18 mins
Moonrise: 9:03 AM
Moon Transit: 5:08 PM
Moonset: 12:06 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.8%

Best Times for Fishing or Hunting

Major Periods

4:25 AM - 6:55 AM
4:38 PM - 7:08 PM

Minor Periods

8:33 AM - 10:03 AM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Tuesday, March 24, 2026

Weather Forecast

Partly Cloudy
50.8°F
32.4°F
41.7°F
56%
0 in
0%
0%
11.6 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 7.59 μg/m3
PM10: 7.73 μg/m3
Carbon Monoxide: 225.33 μg/m3
Nitrogen Dioxide: 17.29 μg/m3
Sulphur Dioxide: 3.97 μg/m3
Ozone: 70.92 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 12:00 AM
Sunset: 7:08 PM
Daylight: 12 hrs 21 mins
Moonrise: 9:54 AM
Moon Transit: 6:10 PM
Moonset: 1:22 AM
Moon Phase: Waxing Crescent
Moon Illumination: 34.0%

Best Times for Fishing or Hunting

Major Periods

5:27 AM - 7:57 AM
5:40 PM - 8:10 PM

Minor Periods

9:24 AM - 10:54 AM
12:52 AM - 2:22 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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