Water Temperature of the Fox River in McHenry, IL

Current Water Temperature

32.0°F

Measurement Time: Wednesday, April 15, 2026, 8:08 PM CDT

Temperature Locations

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Fox River

Station Name: FOX RIVER AT MILLER BRIDGE NEAR MCHENRY, IL
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 728 feet

Nearest Address:
Charles J Miller Rd
McHenry, IL 60051
McHenry County

GPS Coordinates: 42.3233333, -88.2516667

Nearby Water Temperatures

Fox River, Burlington, WI (19.9 mi)
Lake Michigan, Waukegan, IL (23.5 mi)
Lake Michigan, Winthrop Harbor, IL (26.8 mi)
Lake Michigan, Wilmette, IL (33.2 mi)
Eagle Spring Lake, Mukwonago, WI (37.8 mi)
Root River, Franklin, WI (39.1 mi)
Lake Michigan, Racine, WI (40.4 mi)
Chicago River, Chicago, IL (44.4 mi)
Lake Michigan, Chicago, IL (46.2 mi)
Chicago Sanitary and Ship Canal, Romeoville, IL (48.2 mi)
Honey Creek, Wauwatosa, WI (51.3 mi)
Lake Michigan, Milwaukee, WI (51.7 mi)
Des Plaines River, Lockport, IL (52.8 mi)
Rock River, Byron, IL (53.2 mi)
Des Plaines River, Joliet, IL (55.1 mi)

Weather for McHenry, Illinois

Current Weather

60.1°F
Light rain
Light rain
60.1°F
59.3°F
96%
SW 14.8 mph
31.2 mph
59.2°F
57.1°F
0 in
100%
6 mi
1009 mbar
0

Five Day Weather Forecast

Moderate rain
Thu
H: 68°F
L: 54°F
Patchy rain nearby
Fri
H: 80°F
L: 51°F
Heavy rain
Sat
H: 52°F
L: 37°F
Sunny
Sun
H: 46°F
L: 32°F
Sunny
Mon
H: 59°F
L: 32°F

Air Quality

PM2.5: 5.95 μg/m3
PM10: 6.25 μg/m3
Carbon Monoxide: 153.85 μg/m3
Nitrogen Dioxide: 4.05 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 57 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 12:52 AM
Sunset: 7:36 PM
Daylight: 13 hrs 25 mins
Moonrise: 5:28 AM
Moon Transit: 12:07 AM
Moonset: 7:02 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:37 AM - 2:07 PM

Minor Periods

6:32 PM - 8:02 PM
4:58 AM - 6:28 AM

Action Rating: 5 out of 5

Flood Warning issued April 15 at 10:43AM CDT by NWS Chicago IL

Effective: Wed April 15, 2026, 10:43 AM
Expires: Thu April 16, 2026, 4:45 AM

...The National Weather Service in Chicago IL has issued a Flood Warning for the following rivers in Illinois... Fox River at Montgomery affecting Kane and Kendall Counties. ...Forecast flooding changed from Minor to Moderate severity for the following rivers in Illinois... Fox River at Algonquin Lock & Dam tailwater affecting McHenry, Kane and Lake IL Counties. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater, Montgomery, Dayton...Moderate flooding is forecast. * WHAT...Minor flooding is occurring and moderate 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 further notice. * IMPACTS...At 11.5 feet, Residences threatened along Oceola Drive in Algonquin. A few residences threatened along McBridge Street in Elgin. Jayne Street and Beach Drive threatened in Algonquin. River Street threatened in East Dundee. Jerusha Avenue threatened in Elgin. Fox River Trail threatened between East Dundee and Elgin. * ADDITIONAL DETAILS... - At 9:30 AM CDT Wednesday the stage was 10.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 AM CDT Wednesday was 10.0 feet. - Forecast...The river is expected to rise and approach moderate flood stage tomorrow morning. - Flood stage is 9.5 feet. - Flood History...This crest compares to a previous crest of 11.4 feet on 09/17/2019. - 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.


Flood Watch issued April 15 at 1:30PM CDT until April 16 at 1:00AM CDT by NWS Chicago IL

Effective: Wed April 15, 2026, 1:30 PM
Expires: Wed April 15, 2026, 9:30 PM

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Illinois, including the following areas, Boone, Central Cook, De Kalb, DuPage, Eastern Will, Grundy, Kane, Kankakee, Kendall, La Salle, Lake IL, Lee, Livingston, McHenry, Northern Cook, Northern Will, Ogle, Southern Cook, Southern Will and Winnebago and northwest Indiana, including the following areas, Jasper, Lake IN, Newton and Porter. * WHEN...Until 1 AM CDT Thursday. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Roads and streets may be flooded. * ADDITIONAL DETAILS... - Additional rounds of showers and thunderstorms are expected through this evening. Elevated soil moisture due to recent rainfall is expected to increase the susceptibility to flash flooding. - http://www.weather.gov/safety/flood

A Flood Watch for flash flooding means rapid-onset flooding is possible, but not yet certain, based upon the latest forecasts. Flash flooding is a dangerous situation. Persons with interests along area rivers, creeks, and other waterways should monitor the latest forecasts and be prepared to take action should flooding develop.


Flood Warning issued April 15 at 11:19AM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed April 15, 2026, 11:19 AM
Expires: Wed April 15, 2026, 11:30 PM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Fox River Lower Near New Munster affecting Kenosha and Lake Counties. * WHAT...Moderate flooding is forecast. * WHERE...Fox River Lower near New Munster. * WHEN...Until further notice. * IMPACTS...At 13.5 feet, Floodwaters are into the lower levels of some homes in the Town of Wheatland and Village of Salem Lakes areas along Riverside Drive and Shorewood Drive. * ADDITIONAL DETAILS... - At 11:00 AM CDT Wednesday the stage was 10.7 feet. - Bankfull stage is 10.0 feet. - Forecast...The river is expected to rise above flood stage late this afternoon and continue rising to a crest of 13.6 feet early Saturday morning. - Flood stage is 11.0 feet. - Flood History...This crest compares to a previous crest of 13.6 feet on 10/04/2019. - http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov. The next statement will be issued this evening at 1130 PM CDT.


Flood Warning issued April 15 at 10:36AM CDT by NWS Chicago IL

Effective: Wed April 15, 2026, 10:36 AM
Expires: Thu April 16, 2026, 4:45 AM

...The Flood Warning continues for the following rivers in Illinois... Des Plaines River near Russell affecting Lake IL County. Des Plaines River near Gurnee affecting Lake IL County. For the Des Plaines River...including Russell, Gurnee...Moderate flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Des Plaines River from IL/WI state line downstream to US-41 in Gurnee, including the Russell gauge. * WHEN...Until further notice. * IMPACTS...At 9.5 feet, Residential structures threatened along Russell Road between the river and Kilbourne Road. Industrial parking lots threatened along Kilbourne Road. * ADDITIONAL DETAILS... - At 9:30 AM CDT Wednesday the stage was 7.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 AM CDT Wednesday was 7.2 feet. - Forecast...The river is expected to rise to a crest of 8.9 feet early Friday afternoon. The river may approach moderate flood stage on Friday. - 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 late tonight.


Flood Warning issued April 15 at 10:36AM CDT by NWS Chicago IL

Effective: Wed April 15, 2026, 10:36 AM
Expires: Thu April 16, 2026, 4:45 AM

...The Flood Warning continues for the following rivers in Illinois... Des Plaines River near Russell affecting Lake IL County. Des Plaines River near Gurnee affecting Lake IL County. For the Des Plaines River...including Russell, Gurnee...Moderate flooding is forecast. * WHAT...Minor flooding is occurring and moderate 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 further notice. * IMPACTS...At 10.0 feet, Residences threatened along Kilbourne Road and near O'Plaine Road and McClure Avenue in Gurnee. Businesses threatened along Old Grand Avenue near IL-132 in Gurnee. IL-132 (Grand Avenue) is threatened east of the river in Gurnee. * ADDITIONAL DETAILS... - At 9:30 AM CDT Wednesday the stage was 7.6 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 AM CDT Wednesday was 7.6 feet. - Forecast...The river is expected to rise and reach moderate flood stage overnight tonight. - Flood stage is 7.0 feet. - Flood History...This crest compares to a previous crest of 10.5 feet on 09/15/2019. - 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.


Thursday, April 16, 2026

Weather Forecast

Moderate rain
67.5°F
53.6°F
61.3°F
86%
0.39 in
87%
0%
16.8 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 4.81 μg/m3
PM10: 5.24 μg/m3
Carbon Monoxide: 169.81 μg/m3
Nitrogen Dioxide: 5.42 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 69.64 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 12:52 AM
Sunset: 7:36 PM
Daylight: 13 hrs 25 mins
Moonrise: 5:28 AM
Moon Transit: 12:07 AM
Moonset: 7:02 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:37 AM - 2:07 PM

Minor Periods

6:32 PM - 8:02 PM
4:58 AM - 6:28 AM

Action Rating: 5 out of 5

Friday, April 17, 2026

Weather Forecast

Patchy rain nearby
79.7°F
50.7°F
64.7°F
82%
0.16 in
86%
0%
20.8 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 14.81 μg/m3
PM10: 15.81 μg/m3
Carbon Monoxide: 211.97 μg/m3
Nitrogen Dioxide: 15.59 μg/m3
Sulphur Dioxide: 4.03 μg/m3
Ozone: 64.44 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 12:52 AM
Sunset: 7:37 PM
Daylight: 13 hrs 28 mins
Moonrise: 5:53 AM
Moon Transit: 1:00 PM
Moonset: 8:23 PM
Moon Phase: New
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

12:17 AM - 2:47 AM
12:30 AM - 3:00 PM

Minor Periods

7:53 PM - 9:23 PM
5:23 AM - 6:53 AM

Action Rating: 4 out of 5

Saturday, April 18, 2026

Weather Forecast

Heavy rain
52.3°F
36.9°F
46.3°F
68%
3.55 in
87%
0%
21 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 4.55 μg/m3
PM10: 4.85 μg/m3
Carbon Monoxide: 163.94 μg/m3
Nitrogen Dioxide: 5.03 μg/m3
Sulphur Dioxide: 2.15 μg/m3
Ozone: 82.28 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 12:52 AM
Sunset: 7:38 PM
Daylight: 13 hrs 31 mins
Moonrise: 6:23 AM
Moon Transit: 1:56 PM
Moonset: 9:44 PM
Moon Phase: New
Moon Illumination: 1.2%

Best Times for Fishing or Hunting

Major Periods

1:12 AM - 3:42 AM
1:26 PM - 3:56 PM

Minor Periods

9:14 PM - 10:44 PM
5:53 AM - 7:23 AM

Action Rating: 4 out of 5

Sunday, April 19, 2026

Weather Forecast

Sunny
46.4°F
31.8°F
38.5°F
53%
0 in
0%
0%
17 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 3.17 μg/m3
PM10: 3.33 μg/m3
Carbon Monoxide: 158.33 μg/m3
Nitrogen Dioxide: 3.85 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 82.85 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 12:52 AM
Sunset: 7:39 PM
Daylight: 13 hrs 33 mins
Moonrise: 7:01 AM
Moon Transit: 2:57 PM
Moonset: 11:05 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

2:11 AM - 4:41 AM
2:27 PM - 4:57 PM

Minor Periods

12:00 AM - 12:00 AM
6:31 AM - 8:01 AM

Action Rating: 3 out of 5

Monday, April 20, 2026

Weather Forecast

Sunny
58.9°F
31.8°F
42.4°F
54%
0 in
0%
0%
16.6 mph
0


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: 6:04 AM
Sun Transit: 12:51 AM
Sunset: 7:40 PM
Daylight: 13 hrs 36 mins
Moonrise: 7:49 AM
Moon Transit: 4:01 PM
Moonset: 12:05 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

3:14 AM - 5:44 AM
3:31 PM - 6:01 PM

Minor Periods

7:19 AM - 8:49 AM
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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