Water Temperature of the Fox River in McHenry, IL
Current Water Temperature
Measurement Time: Wednesday, April 22, 2026, 3:03 PM CDT
Temperature Locations
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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

Five Day Weather Forecast

Wed
H: 82°F
L: 52°F

Thu
H: 76°F
L: 50°F

Fri
H: 65°F
L: 48°F

Sat
H: 63°F
L: 42°F

Sun
H: 68°F
L: 46°F
Air Quality
Nitrogen Dioxide: 23.25 μg/m3
Sulphur Dioxide: 5.05 μg/m3
Ozone: 56 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 7:43 PM
Daylight: 13 hrs 41 mins
Moon Transit: 6:09 PM
Moonset: 1:20 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%
Best Times for Fishing or Hunting
Major Periods
5:23 AM - 7:53 AM5:39 PM - 8:09 PM
Minor Periods
9:30 AM - 11:00 AM12:50 AM - 2:20 AM
Action Rating: 3 out of 5
Flood Warning issued April 21 at 6:04PM CDT until April 29 at 1:00PM CDT by NWS Chicago IL
Effective: Tue April 21, 2026, 6:04 PM
Expires: Wed April 29, 2026, 1:00 PM
* WHAT...Flooding caused by excessive rainfall continues. * WHERE...A portion of northeast Illinois, including the following counties, Lake IL and McHenry. * WHEN...Until further notice. * IMPACTS...Numerous roads, yards, structures, and areas of park land are flooding along the Fox River Chain of Lakes. Flooding will continue through at least the middle of next week. * ADDITIONAL DETAILS... - At 600 PM CDT, River gauges along the Fox River Chain of Lakes indicated water levels continuing to climb slowly. The rate of climb has slowed since yesterday. Water levels on Channel Lake exceeded major flood stage yesterday and water levels on Fox Lake and Nippersink Lake exceeded major flood stage today. The latest forecast from the Illinois Department of Natural Resources indicates that water levels are near crest. - Water levels are expected to remain above flood stage at least through the middle of next week, assuming no additional rainfall occurs. Impacts from this flood are likely to be similar to those experienced in May of 1973, April 1979, or October of 1986, which each crested at similar levels. - Some locations that will experience flooding include areas along the Fox River Chain of Lakes, including Nippersink Lake, Fox Lake, Pistakee Lake, Petite Lake, Lake Marie, Channel Lake, and Lake Catherine. - http://www.weather.gov/safety/flood
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Flood Warning issued April 22 at 10:39AM CDT by NWS Chicago IL
Effective: Wed April 22, 2026, 10:39 AM
Expires: Thu April 23, 2026, 4:45 AM
...The Flood Warning continues for the following rivers in Illinois... Fox River at Montgomery affecting Kane and Kendall Counties. Fox River at Algonquin Lock & Dam tailwater affecting Kane, McHenry and Lake IL Counties. * WHAT...Moderate flooding is occurring and major 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 12.0 feet, Structures threatened along River Street, Johnson Street, and Maiden Lane in East Dundee. North Harrison Street threatened near Riverside Park in Algonquin. Washington Street threatened in Carpentersville. Water Street, Edwards Avenue, and Elgin Avenue threatened in East Dundee. Bayview Road threatened in Elgin. Low-lying areas of Festival Park are threatened in Elgin. * ADDITIONAL DETAILS... - At 9:30 AM CDT Wednesday the stage was 12.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 AM CDT Wednesday was 12.0 feet. - Forecast...The river is expected to rise to a crest of 12.2 feet Thursday evening, then remain near crest through Saturday before slowly falling. - Flood stage is 9.5 feet. - http://www.weather.gov/safety/flood
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. 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. Additional information is available at www.weather.gov. The next statement will be issued by late tonight.
Flood Warning issued April 22 at 3:16PM CDT until April 29 at 1:00PM CDT by NWS Chicago IL
Effective: Wed April 22, 2026, 3:16 PM
Expires: Wed April 29, 2026, 1:00 PM
* WHAT...Flooding caused by excessive rainfall continues. * WHERE...A portion of northeast Illinois, including the following counties, Lake IL and McHenry. * WHEN...Until further notice. * IMPACTS...Numerous roads, yards, structures, and areas of park land are flooding along the Fox River Chain of Lakes. Flooding will continue through at least the middle of next week. * ADDITIONAL DETAILS... - At 255 PM CDT, River gauges along the Fox River Chain of Lakes indicated water levels are cresting at major flood stage. The latest forecast from the Illinois Department of Natural Resources indicates that water levels may begin to slowly fall on Thursday. - Water levels are expected to remain above flood stage at least through the middle of next week, assuming no additional rainfall occurs. Impacts from this flood are likely to be similar to those experienced in May of 1973, April 1979, or October of 1986, which each crested at similar levels. - Some locations that will experience flooding include areas along the Fox River Chain of Lakes, including Nippersink Lake, Fox Lake, Pistakee Lake, Petite Lake, Lake Marie, Channel Lake, and Lake Catherine. - http://www.weather.gov/safety/flood
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Flood Warning issued April 22 at 5:19AM CDT until April 28 at 7:00PM CDT by NWS Milwaukee/Sullivan WI
Effective: Wed April 22, 2026, 5:19 AM
Expires: Wed April 22, 2026, 5:30 PM
...The Flood Warning is extended for the following rivers in Wisconsin... Wisconsin River At Portage affecting Columbia County. ...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River At Newville affecting Rock County. Rock River Near Lake Koshkonong affecting Rock and Jefferson Counties. Rock River At Fort Atkinson affecting Jefferson County. Rock River At Afton affecting Rock and Winnebago Counties. Rock River At Jefferson affecting Jefferson County. Rock River At Watertown affecting Jefferson County. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. Fox River At Princeton affecting Green Lake County. Fox River Near Berlin affecting Green Lake County. Crawfish River At Milford affecting Jefferson County. Fox River Lower At Rochester affecting Racine County. Fox River Lower Near New Munster affecting Lake and Kenosha Counties. * WHAT...Major flooding is occurring and major flooding is forecast. * WHERE...Fox River Lower near New Munster. * WHEN...Until Tuesday evening. * IMPACTS...At 14.0 feet, There is flooding of the lower levels of homes in the Town of Wheatland and Village of Salem Lakes areas long Riverside Drive, Shorewood Drive, 101st Street and Shorewood Terrace. * ADDITIONAL DETAILS... - At 4:00 AM CDT Wednesday the stage was 14.3 feet. - Bankfull stage is 10.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 4:00 AM CDT Wednesday was 14.6 feet. - Forecast...The river is expected to fall below flood stage early Tuesday afternoon and continue falling to 10.9 feet Tuesday evening. - Flood stage is 11.0 feet. - Flood History...This crest compares to a previous crest of 14.5 feet on 04/20/2013. - http://www.weather.gov/safety/flood
Caution is urged when walking near riverbanks. Even 6 inches of fast-moving flood water can knock you off your feet and a depth of 2 feet will float your car. Never try to walk, swim, or drive through such swift water. If you come upon flood waters, stop, turn around and go another way. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Additional information is available at www.weather.gov. The next statement will be issued this morning at 1000 AM CDT.
Flood Warning issued April 22 at 10:24AM CDT by NWS Chicago IL
Effective: Wed April 22, 2026, 10:24 AM
Expires: Thu April 23, 2026, 4:30 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 further notice. * IMPACTS...At 8.0 feet, Agricultural and park land is inundated near the river. Residential property is threatened near the river. * ADDITIONAL DETAILS... - At 9:30 AM CDT Wednesday the stage was 8.2 feet. - Forecast...The river is expected to continue gradually falling, and may drop below Flood stage this weekend. - Flood stage is 7.0 feet. - http://www.weather.gov/safety/flood
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. 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. Additional information is available at www.weather.gov. The next statement will be issued by late tonight.
Weather Forecast
Air Quality
Nitrogen Dioxide: 11.98 μg/m3
Sulphur Dioxide: 2.4 μg/m3
Ozone: 76.2 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 7:43 PM
Daylight: 13 hrs 41 mins
Moon Transit: 6:09 PM
Moonset: 1:20 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%
Best Times for Fishing or Hunting
Major Periods
5:23 AM - 7:53 AM5:39 PM - 8:09 PM
Minor Periods
9:30 AM - 11:00 AM12:50 AM - 2:20 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 12.39 μg/m3
Sulphur Dioxide: 3.72 μg/m3
Ozone: 81.96 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 7:44 PM
Daylight: 13 hrs 44 mins
Moon Transit: 7:06 PM
Moonset: 2:08 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%
Best Times for Fishing or Hunting
Major Periods
6:23 AM - 8:53 AM6:36 PM - 9:06 PM
Minor Periods
10:46 AM - 12:16 AM1:38 AM - 3:08 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 6.31 μg/m3
Sulphur Dioxide: 2.44 μg/m3
Ozone: 91.92 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 7:45 PM
Daylight: 13 hrs 47 mins
Moon Transit: 8:00 PM
Moonset: 2:45 AM
Moon Phase: First Quarter
Moon Illumination: 50.4%
Best Times for Fishing or Hunting
Major Periods
7:18 AM - 9:48 AM7:30 PM - 10:00 PM
Minor Periods
12:02 AM - 1:32 PM2:15 AM - 3:45 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 5.67 μg/m3
Sulphur Dioxide: 1.75 μg/m3
Ozone: 78.8 μg/m3
Astronomical
Sun Transit: 12:50 AM
Sunset: 7:46 PM
Daylight: 13 hrs 49 mins
Moon Transit: 8:47 PM
Moonset: 3:13 AM
Moon Phase: First Quarter
Moon Illumination: 61.6%
Best Times for Fishing or Hunting
Major Periods
8:08 AM - 10:38 AM8:17 PM - 10:47 PM
Minor Periods
1:14 PM - 2:44 PM2:43 AM - 4:13 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 23.55 μg/m3
Sulphur Dioxide: 2.93 μg/m3
Ozone: 47.46 μg/m3
Astronomical
Sun Transit: 12:50 AM
Sunset: 7:47 PM
Daylight: 13 hrs 52 mins
Moon Transit: 9:31 PM
Moonset: 3:37 AM
Moon Phase: First Quarter
Moon Illumination: 72.3%
Best Times for Fishing or Hunting
Major Periods
8:54 AM - 11:24 AM9:01 PM - 11:31 PM
Minor Periods
2:24 PM - 3:54 PM3:07 AM - 4:37 AM
Action Rating: 2 out of 5
