Water Temperature of Lake Michigan Near Winthrop Harbor, IL

Current Water Temperature

46.8°F

Measurement Time: Wednesday, May 20, 2026, 10:20 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

50.8°F

Conditions: Sunny

Feels Like: 46.6°F

Heat Index: 50.8°F

Humidity: 58%

Wind: NNE 11.2 mph

Wind Gusts: 12.9 mph

Wind Chill: 46.6°F

Dew Point: 36.7°F

Precipitation: 0 in

Cloud Cover: 0%

Visibility: 6 mi

Air Pressure: 1027 mbar

UV Index: 4.7

Five Day Weather Forecast

Wed
H: 52°F
L: 45°F

Thu
H: 55°F
L: 45°F

Fri
H: 57°F
L: 49°F

Sat
H: 57°F
L: 50°F

Sun
H: 72°F
L: 56°F

Air Quality

PM2.5: 2.05 μg/m3

PM10: 2.05 μg/m3

Carbon Monoxide: 122.85 μg/m3
Nitrogen Dioxide: 2.65 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 74 μg/m3

Astronomical

Sunrise: 5:24 AM
Sun Transit: 12:47 AM
Sunset: 8:12 PM
Daylight: 14 hrs 47 mins

Moonrise: 8:57 AM
Moon Transit: 4:55 PM
Moonset: 12:00 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.4%

Best Times for Fishing or Hunting

Major Periods

4:14 AM - 6:44 AM
4:25 PM - 6:55 PM

Minor Periods

8:27 AM - 9:57 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Beach Hazards Statement issued May 20 at 2:28AM CDT until May 21 at 10:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed May 20, 2026, 2:28 AM
Expires: Wed May 20, 2026, 10:30 AM

* WHAT...Life threatening waves of 3 to 5 feet and dangerous currents are expected. * WHERE...Milwaukee, Racine and Kenosha Counties. * WHEN...From 7 PM Wednesday to 10 AM CDT Thursday. * IMPACTS...Dangerous swimming conditions are expected due to high waves and onshore winds.

Stay out of the water and away from dangerous areas like piers and breakwalls. Strong structural and longshore currents are expected. Rip currents are possible.

Beach Hazards Statement issued May 20 at 3:42AM CDT until May 21 at 1:00PM CDT by NWS Chicago IL

Effective: Wed May 20, 2026, 3:42 AM
Expires: Wed May 20, 2026, 11:45 AM

* WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 4 to 6 ft expected. * WHERE...Lake IL, Northern Cook and Central Cook Counties. * WHEN...From 1 PM CDT this afternoon through Thursday afternoon. * 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.

Wednesday, May 20, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 52°F

Low Temperature: 44.8°F

Average Temperature: 48.4°F

Average Humidity: 67%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 12.8 mph

UV Index: 6.1

Air Quality

AQI: 1 - Good

PM2.5: 2.66 μg/m3

PM10: 2.75 μg/m3

Carbon Monoxide: 129.37 μg/m3
Nitrogen Dioxide: 6.04 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 59.88 μg/m3

Astronomical

Sunrise: 5:24 AM
Sun Transit: 12:47 AM
Sunset: 8:12 PM
Daylight: 14 hrs 47 mins

Moonrise: 8:57 AM
Moon Transit: 4:55 PM
Moonset: 12:00 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.4%

Best Times for Fishing or Hunting

Major Periods

4:14 AM - 6:44 AM
4:25 PM - 6:55 PM

Minor Periods

8:27 AM - 9:57 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, May 21, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 55.4°F

Low Temperature: 45.2°F

Average Temperature: 50°F

Average Humidity: 68%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 13 mph

UV Index: 0.4

Air Quality

AQI: 1 - Good

PM2.5: 2.9 μg/m3

PM10: 3.11 μg/m3

Carbon Monoxide: 127.52 μg/m3
Nitrogen Dioxide: 4.92 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 72.44 μg/m3

Astronomical

Sunrise: 5:23 AM
Sun Transit: 12:47 AM
Sunset: 8:13 PM
Daylight: 14 hrs 49 mins

Moonrise: 10:15 AM
Moon Transit: 5:51 PM
Moonset: 12:42 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%

Best Times for Fishing or Hunting

Major Periods

5:13 AM - 7:43 AM
5:21 PM - 7:51 PM

Minor Periods

9:45 AM - 11:15 AM
12:12 AM - 1:42 AM

Action Rating: 4 out of 5

Friday, May 22, 2026

Weather Forecast

Conditions: Patchy rain nearby

High Temperature: 56.8°F

Low Temperature: 48.9°F

Average Temperature: 51.6°F

Average Humidity: 75%

Precipitation: 0.02 in

Chance of Rain: 82%

Chance of Snow: 0%

Maximum Wind: 12.3 mph

UV Index: 3

Air Quality

AQI: 1 - Good

PM2.5: 5.86 μg/m3

PM10: 5.97 μg/m3

Carbon Monoxide: 167.69 μg/m3
Nitrogen Dioxide: 10.09 μg/m3
Sulphur Dioxide: 1.76 μg/m3
Ozone: 60.8 μg/m3

Astronomical

Sunrise: 5:23 AM
Sun Transit: 12:47 AM
Sunset: 8:14 PM
Daylight: 14 hrs 51 mins

Moonrise: 11:31 AM
Moon Transit: 6:42 PM
Moonset: 1:14 AM
Moon Phase: Waxing Crescent
Moon Illumination: 33.4%

Best Times for Fishing or Hunting

Major Periods

6:06 AM - 8:36 AM
6:12 PM - 8:42 PM

Minor Periods

11:01 AM - 12:31 AM
12:44 AM - 2:14 AM

Action Rating: 3 out of 5

Saturday, May 23, 2026

Weather Forecast

Conditions: Patchy rain nearby

High Temperature: 56.9°F

Low Temperature: 50°F

Average Temperature: 52.6°F

Average Humidity: 89%

Precipitation: 0.02 in

Chance of Rain: 89%

Chance of Snow: 0%

Maximum Wind: 11.2 mph

UV Index: 3

Air Quality

AQI: 1 - Good

PM2.5: 5.76 μg/m3

PM10: 5.8 μg/m3

Carbon Monoxide: 196.54 μg/m3
Nitrogen Dioxide: 10.4 μg/m3
Sulphur Dioxide: 1.6 μg/m3
Ozone: 54.85 μg/m3

Astronomical

Sunrise: 5:22 AM
Sun Transit: 12:47 AM
Sunset: 8:14 PM
Daylight: 14 hrs 53 mins

Moonrise: 12:43 AM
Moon Transit: 7:28 PM
Moonset: 1:40 AM
Moon Phase: First Quarter
Moon Illumination: 44.4%

Best Times for Fishing or Hunting

Major Periods

6:54 AM - 9:24 AM
6:58 PM - 9:28 PM

Minor Periods

12:13 AM - 1:43 PM
1:10 AM - 2:40 AM

Action Rating: 2 out of 5

Sunday, May 24, 2026

Weather Forecast

Conditions: Patchy rain nearby

High Temperature: 72.3°F

Low Temperature: 55.9°F

Average Temperature: 64.4°F

Average Humidity: 92%

Precipitation: 0.09 in

Chance of Rain: 71%

Chance of Snow: 0%

Maximum Wind: 9.2 mph

UV Index: 4

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:21 AM
Sun Transit: 12:48 AM
Sunset: 8:15 PM
Daylight: 14 hrs 54 mins

Moonrise: 1:51 PM
Moon Transit: 8:12 PM
Moonset: 2:02 AM
Moon Phase: First Quarter
Moon Illumination: 55.7%

Best Times for Fishing or Hunting

Major Periods

7:39 AM - 10:09 AM
7:42 PM - 10:12 PM

Minor Periods

1:21 PM - 2:51 PM
1:32 AM - 3:02 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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Water Temperature of Lake Michigan Near Winthrop Harbor, IL

Current Water Temperature

Temperature Locations

Local Points of Interest

Nearby Water Temperatures

Weather Near Winthrop Harbor, Illinois

Current Weather

Five Day Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Beach Hazards Statement issued May 20 at 2:28AM CDT until May 21 at 10:00AM CDT by NWS Milwaukee/Sullivan WI

Beach Hazards Statement issued May 20 at 3:42AM CDT until May 21 at 1:00PM CDT by NWS Chicago IL

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

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Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

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Minor Periods

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Astronomical

Best Times for Fishing or Hunting

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Minor Periods

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Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Webcams Near Winthrop Harbor, IL

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