Weather Near Winthrop Harbor, Illinois
Current Weather
Five Day Weather Forecast
Sun
H: 85°F
L: 45°F
Mon
H: 70°F
L: 57°F
Tue
H: 71°F
L: 62°F
Wed
H: 63°F
L: 47°F
Thu
H: 70°F
L: 47°F
Air Quality
Nitrogen Dioxide: 9.35 μg/m3
Sulphur Dioxide: 2.25 μg/m3
Ozone: 89 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 7:29 PM
Daylight: 13 hrs 15 mins
Moon Transit: 8:58 AM
Moonset: 2:10 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%
Best Times for Fishing or Hunting
Major Periods
8:28 AM - 10:58 AM9:10 PM - 11:40 PM
Minor Periods
1:40 PM - 3:10 PM3:27 AM - 4:57 AM
Action Rating: 2 out of 5
Flood Warning issued April 11 at 9:24PM CDT until April 14 at 7:00PM CDT by NWS Chicago IL
Effective: Sat April 11, 2026, 9:24 PM
Expires: Sun April 12, 2026, 3:30 PM
...The Flood Warning continues for the following rivers in Illinois...Indiana... Fox River at Algonquin Lock & Dam tailwater affecting Lake IL, McHenry and Kane Counties. Kankakee River at Dunns Bridge affecting Jasper and Porter Counties. Kankakee River at Shelby affecting Newton and Lake IN Counties. ...The Flood Warning is extended for the following rivers in Illinois... Des Plaines River near Gurnee affecting Lake IL County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Des Plaines River from US-41 in Gurnee downstream to Townline Road in Vernon Hills, including the Gurnee gauge. * WHEN...Until Tuesday evening. * IMPACTS...At 7.0 feet, Forest land inundated near the river in Gurnee. * ADDITIONAL DETAILS... - At 8:30 PM CDT Saturday the stage was 7.1 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Saturday was 7.6 feet. - Forecast...The river is expected to rise to a crest of 7.2 feet early Monday morning. It will then fall below flood stage early Tuesday afternoon. - Flood stage is 7.0 feet. - http://www.weather.gov/safety/flood
A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued by Sunday afternoon.
Flood Warning issued April 11 at 9:24PM CDT until April 14 at 7:00PM CDT by NWS Chicago IL
Effective: Sat April 11, 2026, 9:24 PM
Expires: Sun April 12, 2026, 3:30 PM
...The Flood Warning continues for the following rivers in Illinois...Indiana... Fox River at Algonquin Lock & Dam tailwater affecting Lake IL, McHenry and Kane Counties. Kankakee River at Dunns Bridge affecting Jasper and Porter Counties. Kankakee River at Shelby affecting Newton and Lake IN Counties. ...The Flood Warning is extended for the following rivers in Illinois... Des Plaines River near Gurnee affecting Lake IL County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Fox River from Johnsburg downstream to Red Gate Road in St. Charles, including the Algonquin Lock & Dam tailwater gauge. * WHEN...Until Tuesday evening. * IMPACTS...At 10.0 feet, Winaki Trail and Onaway Trail are threatened south of Algonquin. Athletic fields inundated at Judson College in Elgin. * ADDITIONAL DETAILS... - At 8:30 PM CDT Saturday the stage was 9.8 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Saturday was 9.9 feet. - Forecast...The river is expected to fall below flood stage early Tuesday afternoon. - Flood stage is 9.5 feet. - http://www.weather.gov/safety/flood
A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued by Sunday afternoon.
Flood Warning issued April 12 at 10:46AM CDT until April 14 at 7:00PM CDT by NWS Chicago IL
Effective: Sun April 12, 2026, 10:46 AM
Expires: Mon April 13, 2026, 5:00 AM
...The Flood Warning continues for the following rivers in Illinois... Fox River at Algonquin Lock & Dam tailwater affecting Kane, McHenry and Lake IL Counties. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater...Minor flooding is occurring. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Fox River from Johnsburg downstream to Red Gate Road in St. Charles, including the Algonquin Lock & Dam tailwater gauge. * WHEN...Until Tuesday evening. * IMPACTS...At 9.5 feet, Fox River Drive threatened in East Dundee. Boathouses threatened along the river in Cary. * ADDITIONAL DETAILS... - At 10:30 AM CDT Sunday the stage was 9.6 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:30 AM CDT Sunday was 9.9 feet. - Forecast...The river is expected to remain just above flood stage before falling below on Tuesday. - Flood stage is 9.5 feet. - http://www.weather.gov/safety/flood
A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued by late tonight.
Weather Forecast
Air Quality
Nitrogen Dioxide: 11.94 μg/m3
Sulphur Dioxide: 4.58 μg/m3
Ozone: 85.8 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 7:29 PM
Daylight: 13 hrs 15 mins
Moon Transit: 8:58 AM
Moonset: 2:10 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%
Best Times for Fishing or Hunting
Major Periods
8:28 AM - 10:58 AM9:10 PM - 11:40 PM
Minor Periods
1:40 PM - 3:10 PM3:27 AM - 4:57 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 8.65 μg/m3
Sulphur Dioxide: 2.32 μg/m3
Ozone: 85.12 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 7:31 PM
Daylight: 13 hrs 17 mins
Moon Transit: 9:44 AM
Moonset: 3:19 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.1%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM9:14 AM - 11:44 AM
Minor Periods
2:49 PM - 4:19 PM3:51 AM - 5:21 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 12.66 μg/m3
Sulphur Dioxide: 2.28 μg/m3
Ozone: 70.4 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 7:32 PM
Daylight: 13 hrs 20 mins
Moon Transit: 10:30 AM
Moonset: 4:31 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:00 AM - 12:30 AM
Minor Periods
4:01 PM - 5:31 PM4:13 AM - 5:43 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 23.75 μg/m3
Sulphur Dioxide: 3.17 μg/m3
Ozone: 45.4 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 7:33 PM
Daylight: 13 hrs 23 mins
Moon Transit: 10:33 AM
Moonset: 5:44 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%
Best Times for Fishing or Hunting
Major Periods
10:03 AM - 12:33 AM10:03 AM - 12:33 AM
Minor Periods
5:14 PM - 6:44 PM4:34 AM - 6:04 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 12.46 μg/m3
Sulphur Dioxide: 2.47 μg/m3
Ozone: 63.08 μg/m3
Astronomical
Sun Transit: 12:50 AM
Sunset: 7:34 PM
Daylight: 13 hrs 26 mins
Moon Transit: 12:05 AM
Moonset: 7:01 PM
Moon Phase: New
Moon Illumination: 0.8%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:35 AM - 2:05 PM
Minor Periods
6:31 PM - 8:01 PM4:56 AM - 6:26 AM
Action Rating: 5 out of 5