Water Temperature of the Fox River in McHenry, IL

Current Water Temperature

32.0°F

Measurement Time: Sunday, April 12, 2026, 5:22 AM 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

66.9°F
Partly cloudy
Partly cloudy
66.9°F
69.5°F
66%
SSW 16.1 mph
26.3 mph
67.3°F
58.3°F
0 in
75%
9 mi
1014 mbar
1.1

Five Day Weather Forecast

Moderate rain
Sun
H: 83°F
L: 45°F
Moderate rain
Mon
H: 73°F
L: 60°F
Thundery outbreaks in nearby
Tue
H: 77°F
L: 65°F
Moderate rain
Wed
H: 68°F
L: 51°F
Patchy rain nearby
Thu
H: 77°F
L: 50°F

Air Quality

AQI: 1 - Good
PM2.5: 6.35 μg/m3
PM10: 6.75 μg/m3
Carbon Monoxide: 154.85 μg/m3
Nitrogen Dioxide: 2.75 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 102 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 12:53 AM
Sunset: 7:31 PM
Daylight: 13 hrs 14 mins
Moonrise: 3:59 AM
Moon Transit: 9:00 AM
Moonset: 2:12 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:30 AM - 11:00 AM
9:08 PM - 11:38 PM

Minor Periods

1:42 PM - 3:12 PM
3:29 AM - 4:59 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...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 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.
Sunday, April 12, 2026

Weather Forecast

Moderate rain
82.9°F
45.3°F
62.1°F
79%
0.49 in
85%
0%
22.6 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 8.83 μg/m3
PM10: 9.15 μg/m3
Carbon Monoxide: 185.37 μg/m3
Nitrogen Dioxide: 9.07 μg/m3
Sulphur Dioxide: 4.81 μg/m3
Ozone: 86.64 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 12:53 AM
Sunset: 7:31 PM
Daylight: 13 hrs 14 mins
Moonrise: 3:59 AM
Moon Transit: 9:00 AM
Moonset: 2:12 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:30 AM - 11:00 AM
9:08 PM - 11:38 PM

Minor Periods

1:42 PM - 3:12 PM
3:29 AM - 4:59 AM

Action Rating: 2 out of 5

Monday, April 13, 2026

Weather Forecast

Moderate rain
72.5°F
60.4°F
66.4°F
91%
0.45 in
76%
0%
20.1 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 4.93 μg/m3
PM10: 5.53 μg/m3
Carbon Monoxide: 163.29 μg/m3
Nitrogen Dioxide: 3.77 μg/m3
Sulphur Dioxide: 1.53 μg/m3
Ozone: 86.32 μg/m3

Astronomical

Sunrise: 6:15 AM
Sun Transit: 12:53 AM
Sunset: 7:32 PM
Daylight: 13 hrs 17 mins
Moonrise: 4:23 AM
Moon Transit: 9:46 AM
Moonset: 3:22 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:16 AM - 11:46 AM

Minor Periods

2:52 PM - 4:22 PM
3:53 AM - 5:23 AM

Action Rating: 2 out of 5

Tuesday, April 14, 2026

Weather Forecast

Thundery outbreaks in nearby
76.5°F
64.8°F
69.9°F
90%
0 in
0%
0%
21.5 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 5.46 μg/m3
PM10: 6.02 μg/m3
Carbon Monoxide: 172.41 μg/m3
Nitrogen Dioxide: 4.9 μg/m3
Sulphur Dioxide: 1.74 μg/m3
Ozone: 78.4 μg/m3

Astronomical

Sunrise: 6:14 AM
Sun Transit: 12:53 AM
Sunset: 7:33 PM
Daylight: 13 hrs 20 mins
Moonrise: 4:45 AM
Moon Transit: 10:32 AM
Moonset: 4:33 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:02 AM - 12:32 AM

Minor Periods

4:03 PM - 5:33 PM
4:15 AM - 5:45 AM

Action Rating: 3 out of 5

Wednesday, April 15, 2026

Weather Forecast

Moderate rain
67.8°F
50.7°F
62.2°F
90%
0.65 in
89%
0%
15 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 7.95 μg/m3
PM10: 8.19 μg/m3
Carbon Monoxide: 175.64 μg/m3
Nitrogen Dioxide: 13.6 μg/m3
Sulphur Dioxide: 2.57 μg/m3
Ozone: 52.24 μg/m3

Astronomical

Sunrise: 6:12 AM
Sun Transit: 12:53 AM
Sunset: 7:35 PM
Daylight: 13 hrs 22 mins
Moonrise: 5:06 AM
Moon Transit: 10:33 AM
Moonset: 5:46 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

10:03 AM - 12:33 AM
10:03 AM - 12:33 AM

Minor Periods

5:16 PM - 6:46 PM
4:36 AM - 6:06 AM

Action Rating: 3 out of 5

Thursday, April 16, 2026

Weather Forecast

Patchy rain nearby
77.1°F
49.5°F
62.9°F
79%
0.14 in
86%
0%
21.7 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 4.53 μg/m3
PM10: 4.77 μg/m3
Carbon Monoxide: 154.32 μg/m3
Nitrogen Dioxide: 5.39 μg/m3
Sulphur Dioxide: 1.76 μg/m3
Ozone: 67.31 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

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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