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

64.9°F
Light rain
Light rain
64.9°F
65.1°F
93%
WSW 15.4 mph
27.8 mph
65.1°F
62.2°F
0 in
100%
8 mi
994 mbar
0

Five Day Weather Forecast

Moderate rain
Wed
H: 68°F
L: 56°F
Partly Cloudy
Thu
H: 69°F
L: 58°F
Sunny
Fri
H: 69°F
L: 52°F
Sunny
Sat
H: 72°F
L: 56°F
Heavy rain
Sun
H: 59°F
L: 54°F

Air Quality

AQI: 1 - Good
PM2.5: 4.3 μg/m3
PM10: 4.6 μg/m3
Carbon Monoxide: 147 μg/m3
Nitrogen Dioxide: 6.4 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 75 μg/m3

Astronomical

Sunrise: 5:13 AM
Sun Transit: 12:52 AM
Sunset: 8:31 PM
Daylight: 15 hrs 18 mins
Moonrise: 7:52 AM
Moon Transit: 3:39 PM
Moonset: 11:12 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.6%

Best Times for Fishing or Hunting

Major Periods

2:58 AM - 5:28 AM
3:09 PM - 5:39 PM

Minor Periods

12:00 AM - 12:00 AM
7:22 AM - 8:52 AM

Action Rating: 3 out of 5

Beach Hazards Statement issued June 17 at 3:22PM CDT until June 18 at 4:00AM CDT by NWS Chicago IL

Effective: Wed June 17, 2026, 3:22 PM
Expires: Wed June 17, 2026, 11:30 PM

* WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 5 to 8 ft expected. * WHERE...Lake IL, Northern Cook and Central Cook Counties. * WHEN...Through late tonight. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com.

Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures.


Small Craft Advisory issued June 17 at 10:12AM CDT until June 18 at 9:00AM CDT by NWS Chicago IL

Effective: Wed June 17, 2026, 10:12 AM
Expires: Wed June 17, 2026, 6:15 PM

* WHAT...Southeast winds to 30 kt with occasional gales to 35 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...From 1 PM this afternoon to 9 AM CDT Thursday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.


Small Craft Advisory issued June 17 at 3:16PM CDT until June 18 at 9:00AM CDT by NWS Chicago IL

Effective: Wed June 17, 2026, 3:16 PM
Expires: Wed June 17, 2026, 11:30 PM

* WHAT...West winds to 30 kt and significant waves to 9 ft occasionally to 12 ft. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...Until 9 AM CDT Thursday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Wednesday, June 17, 2026

Weather Forecast

Moderate rain
67.5°F
55.6°F
61.2°F
80%
0.25 in
74%
0%
24.4 mph
2.7


Air Quality

AQI: 1 - Good
PM2.5: 7.17 μg/m3
PM10: 7.42 μg/m3
Carbon Monoxide: 144.92 μg/m3
Nitrogen Dioxide: 11.8 μg/m3
Sulphur Dioxide: 1.19 μg/m3
Ozone: 57.71 μg/m3

Astronomical

Sunrise: 5:13 AM
Sun Transit: 12:52 AM
Sunset: 8:31 PM
Daylight: 15 hrs 18 mins
Moonrise: 7:52 AM
Moon Transit: 3:39 PM
Moonset: 11:12 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.6%

Best Times for Fishing or Hunting

Major Periods

2:58 AM - 5:28 AM
3:09 PM - 5:39 PM

Minor Periods

12:00 AM - 12:00 AM
7:22 AM - 8:52 AM

Action Rating: 3 out of 5

Thursday, June 18, 2026

Weather Forecast

Partly Cloudy
69°F
58.3°F
63.4°F
75%
0 in
17%
0%
20.1 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 3.98 μg/m3
PM10: 4.16 μg/m3
Carbon Monoxide: 127.54 μg/m3
Nitrogen Dioxide: 5.04 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 74.13 μg/m3

Astronomical

Sunrise: 5:13 AM
Sun Transit: 12:52 AM
Sunset: 8:32 PM
Daylight: 15 hrs 18 mins
Moonrise: 9:12 AM
Moon Transit: 4:33 PM
Moonset: 12:12 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.4%

Best Times for Fishing or Hunting

Major Periods

3:55 AM - 6:25 AM
4:03 PM - 6:33 PM

Minor Periods

8:42 AM - 10:12 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Friday, June 19, 2026

Weather Forecast

Sunny
68.6°F
52.1°F
61.2°F
70%
0 in
9%
0%
14.1 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 3.48 μg/m3
PM10: 3.62 μg/m3
Carbon Monoxide: 128.88 μg/m3
Nitrogen Dioxide: 6.48 μg/m3
Sulphur Dioxide: 0.54 μg/m3
Ozone: 61.46 μg/m3

Astronomical

Sunrise: 5:13 AM
Sun Transit: 12:52 AM
Sunset: 8:32 PM
Daylight: 15 hrs 19 mins
Moonrise: 10:28 AM
Moon Transit: 5:23 PM
Moonset: 12:41 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.3%

Best Times for Fishing or Hunting

Major Periods

4:47 AM - 7:17 AM
4:53 PM - 7:23 PM

Minor Periods

9:58 AM - 11:28 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Saturday, June 20, 2026

Weather Forecast

Sunny
71.9°F
56.1°F
63.7°F
76%
0 in
12%
0%
11 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 3.16 μg/m3
PM10: 3.29 μg/m3
Carbon Monoxide: 127.54 μg/m3
Nitrogen Dioxide: 5.48 μg/m3
Sulphur Dioxide: 0.53 μg/m3
Ozone: 71.54 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:52 AM
Sunset: 8:32 PM
Daylight: 15 hrs 19 mins
Moonrise: 11:39 AM
Moon Transit: 6:08 PM
Moonset: 12:05 AM
Moon Phase: Waxing Crescent
Moon Illumination: 27.8%

Best Times for Fishing or Hunting

Major Periods

5:34 AM - 8:04 AM
5:38 PM - 8:08 PM

Minor Periods

11:09 AM - 12:39 AM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Sunday, June 21, 2026

Weather Forecast

Heavy rain
58.9°F
53.6°F
57.8°F
90%
1.14 in
87%
0%
19.9 mph
4.3


Air Quality

AQI: 1 - Good
PM2.5: 2.14 μg/m3
PM10: 2.15 μg/m3
Carbon Monoxide: 146.47 μg/m3
Nitrogen Dioxide: 5.02 μg/m3
Sulphur Dioxide: 0.41 μg/m3
Ozone: 60.96 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:53 AM
Sunset: 8:32 PM
Daylight: 15 hrs 19 mins
Moonrise: 12:48 AM
Moon Transit: 6:52 PM
Moonset: 12:26 AM
Moon Phase: First Quarter
Moon Illumination: 38.5%

Best Times for Fishing or Hunting

Major Periods

6:18 AM - 8:48 AM
6:22 PM - 8:52 PM

Minor Periods

12:18 AM - 1:48 PM
12:00 AM - 12:00 AM

Action Rating: 3 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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