Water Temperature of the Fox River in McHenry, IL

Current Water Temperature

32.0°F

Measurement Time: Tuesday, October 6, 2026, 1:07 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

61.4°F
Partly Cloudy
Conditions: Partly Cloudy
Humidity: 66%
Feels Like: 55.2°F
Wind: SSW 11 mph
Wind Gusts: 28.6 mph
Pressure: 29.89 in
Precipitation: 0 in
Cloud Cover: 26%
Visibility: 6 mi
UV Index: 0.1

Weather Forecast

Sunny
Tue
H: 69°F
L: 48°F
Sunny
Wed
H: 73°F
L: 54°F
Overcast
Thu
H: 66°F
L: 49°F
Sunny
Fri
H: 62°F
L: 50°F
Sunny
Sat
H: 80°F
L: 58°F

Air Quality

AQI: 1 - Good
PM2.5: 6.7 μg/m3
PM10: 6.8 μg/m3
Carbon Monoxide: 147 μg/m3
Nitrogen Dioxide: 5.7 μg/m3
Sulphur Dioxide: 3.2 μg/m3
Ozone: 96 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 12:41 AM
Sunset: 6:26 PM
Daylight: 11 hrs 30 mins
Moonrise: 2:19 AM
Moon Transit: 9:33 AM
Moonset: 4:35 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:03 AM - 11:33 AM

Minor Periods

4:05 PM - 5:35 PM
1:49 AM - 3:19 AM

Action Rating: 2 out of 5

Flood Warning issued October 5 at 7:56PM CDT until October 7 at 1:00PM CDT by NWS Chicago IL

Effective: Mon October 5, 2026, 7:56 PM
Expires: Tue October 6, 2026, 2:00 PM

...Observed flooding changed from Minor to Moderate severity for the following rivers in Illinois... Des Plaines River near Russell affecting Lake IL County. * 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 Wednesday afternoon. * IMPACTS...At 7.0 feet, Low-lying wetlands and agricultural land is inundated near the river. * ADDITIONAL DETAILS... - At 7:30 PM CDT Monday the stage was 7.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:30 PM CDT Monday was 7.3 feet. - Forecast...The river is expected to fall below flood stage Wednesday morning and continue falling through the rest of the week. - Flood stage is 7.0 feet. - Flood History...This crest compares to a previous crest of 7.2 feet on 09/20/1980. - 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 almost entirely on observed precipitation as little to no additional precipitation is currently expected over the next 24 to 48 hours. Additional information is available at www.weather.gov. The next statement will be issued by Tuesday afternoon.


Flood Warning issued October 6 at 10:14AM CDT until October 7 at 7:00AM CDT by NWS Chicago IL

Effective: Tue October 6, 2026, 10:14 AM
Expires: Wed October 7, 2026, 4:15 AM

...The Flood Warning continues for the following rivers in Illinois... Des Plaines River near Russell affecting Lake IL County. * 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 Wednesday morning. * IMPACTS...At 7.0 feet, Low-lying wetlands and agricultural land is inundated near the river. * ADDITIONAL DETAILS... - At 9:30 AM CDT Tuesday the stage was 7.1 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 AM CDT Tuesday was 7.2 feet. - Forecast...The river is expected to fall below flood stage Wednesday morning and continue falling. - 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 almost entirely on observed precipitation as little to no additional precipitation is currently expected over the next 24 to 48 hours. Additional information is available at www.weather.gov. The next statement will be issued by late tonight.


Tuesday, October 6, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 57.6°F
Average Humidity: 68%
Chance of Rain: 6%
Wind: 16.3 mph
UV Index: 4.4

Air Quality

AQI: 1 - Good
PM2.5: 9.35 μg/m3
PM10: 9.48 μg/m3
Carbon Monoxide: 157.79 μg/m3
Nitrogen Dioxide: 14.46 μg/m3
Sulphur Dioxide: 3.54 μg/m3
Ozone: 62.5 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 12:41 AM
Sunset: 6:26 PM
Daylight: 11 hrs 30 mins
Moonrise: 2:19 AM
Moon Transit: 9:33 AM
Moonset: 4:35 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:03 AM - 11:33 AM

Minor Periods

4:05 PM - 5:35 PM
1:49 AM - 3:19 AM

Action Rating: 2 out of 5

Wednesday, October 7, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 61.7°F
Average Humidity: 70%
Chance of Rain: 7%
Wind: 11.4 mph
UV Index: 4.3

Air Quality

AQI: 1 - Good
PM2.5: 4.7 μg/m3
PM10: 4.77 μg/m3
Carbon Monoxide: 147.21 μg/m3
Nitrogen Dioxide: 6.9 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 61.29 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 12:40 AM
Sunset: 6:24 PM
Daylight: 11 hrs 27 mins
Moonrise: 3:33 AM
Moon Transit: 10:21 AM
Moonset: 4:58 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:51 AM - 12:21 AM

Minor Periods

4:28 PM - 5:58 PM
3:03 AM - 4:33 AM

Action Rating: 3 out of 5

Thursday, October 8, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 57°F
Average Humidity: 56%
Chance of Rain: 9%
Wind: 9.2 mph
UV Index: 4.2

Air Quality

AQI: 1 - Good
PM2.5: 5.37 μg/m3
PM10: 6.03 μg/m3
Carbon Monoxide: 143.29 μg/m3
Nitrogen Dioxide: 12.44 μg/m3
Sulphur Dioxide: 1.47 μg/m3
Ozone: 51.08 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 12:40 AM
Sunset: 6:23 PM
Daylight: 11 hrs 25 mins
Moonrise: 4:44 AM
Moon Transit: 11:07 AM
Moonset: 5:19 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:37 AM - 1:07 PM

Minor Periods

4:49 PM - 6:19 PM
4:14 AM - 5:44 AM

Action Rating: 3 out of 5

Friday, October 9, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 56.3°F
Average Humidity: 65%
Chance of Rain: 57%
Wind: 12.8 mph
UV Index: 2.6

Air Quality

AQI: 1 - Good
PM2.5: 9.62 μg/m3
PM10: 10.18 μg/m3
Carbon Monoxide: 178.96 μg/m3
Nitrogen Dioxide: 22.5 μg/m3
Sulphur Dioxide: 2.94 μg/m3
Ozone: 46.08 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 12:40 AM
Sunset: 6:21 PM
Daylight: 11 hrs 22 mins
Moonrise: 5:54 AM
Moon Transit: 11:52 AM
Moonset: 5:40 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:22 AM - 1:52 PM

Minor Periods

5:10 PM - 6:40 PM
5:24 AM - 6:54 AM

Action Rating: 4 out of 5

Saturday, October 10, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 67.7°F
Average Humidity: 62%
Chance of Rain: 6%
Wind: 15.4 mph
UV Index: 4.2

Air Quality

AQI: 1 - Good
PM2.5: 7.3 μg/m3
PM10: 7.55 μg/m3
Carbon Monoxide: 212.38 μg/m3
Nitrogen Dioxide: 10.48 μg/m3
Sulphur Dioxide: 2.48 μg/m3
Ozone: 65.5 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 12:39 AM
Sunset: 6:19 PM
Daylight: 11 hrs 19 mins
Moonrise: 7:03 AM
Moon Transit: 12:37 AM
Moonset: 6:02 PM
Moon Phase: New
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

5:32 PM - 7:02 PM
6:33 AM - 8:03 AM

Action Rating: 4 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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