Water Temperature of the Fox River in McHenry, IL
Current Water Temperature
Measurement Time: Sunday, April 19, 2026, 8:07 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

Mon
H: 52°F
L: 32°F

Tue
H: 68°F
L: 45°F

Wed
H: 67°F
L: 45°F

Thu
H: 74°F
L: 58°F

Fri
H: 72°F
L: 51°F
Air Quality
Nitrogen Dioxide: 18.65 μg/m3
Sulphur Dioxide: 3.55 μg/m3
Ozone: 55 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 7:40 PM
Daylight: 13 hrs 36 mins
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 AM3:31 PM - 6:01 PM
Minor Periods
7:19 AM - 8:49 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Flood Warning issued April 19 at 12:12PM CDT until April 25 at 1:00PM CDT by NWS Chicago IL
Effective: Sun April 19, 2026, 12:12 PM
Expires: Sat April 25, 2026, 1:00 PM
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northeast Illinois, including the following counties, Lake IL and McHenry. * WHEN...Until 100 PM CDT Saturday Apr 25. * IMPACTS...Numerous roads, yards, structures, and park land are expected to flood along the Fox River Chain of Lakes. * ADDITIONAL DETAILS... - At 1202 PM CDT, River gauges along the Fox River Chain of Lakes indicated slowly rises water levels due to recent rainfall across the area. - Water levels may near major flood stage by the middle of next week and remain above flood stage potentially for several weeks. Impacts from this flood may be similar to those experienced in May of 1973, October of 1986, or June of 2008. - 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
Now is the time to prepare for flooding that hasn't occurred in several years. Residents living along the immediate shorelines of the Fox River Chain of Lakes need to take precautions to protect property including moving valuables to higher ground. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Flood Warning issued April 19 at 11:55AM CDT by NWS Chicago IL
Effective: Sun April 19, 2026, 11:55 AM
Expires: Mon April 20, 2026, 6:00 AM
...The Flood Warning continues for the following rivers in Illinois... Fox River at Montgomery affecting Kendall and Kane Counties. Fox River at Algonquin Lock & Dam tailwater affecting Kane, McHenry and Lake IL Counties. * WHAT...Moderate flooding is occurring and forecasted to continue. * 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 10:30 AM CDT Sunday, the stage was 11.3 feet. - Forecast...The river is expected to continue to gradually rise over the next several days. At this time, it is expected to remain just below Major Flood Stage. - 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 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 Monday morning.
Freeze Warning issued April 19 at 2:40PM CDT until April 20 at 9:00AM CDT by NWS Chicago IL
Effective: Sun April 19, 2026, 2:40 PM
Expires: Mon April 20, 2026, 1:00 AM
* WHAT...Sub-freezing temperatures as low as 27 expected, with the coldest conditions across interior northern Illinois. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...From midnight CDT /1 AM EDT/ tonight to 9 AM CDT /10 AM EDT/ Monday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
Take steps now to protect tender plants from the cold.
Flood Warning issued April 19 at 11:44AM CDT by NWS Chicago IL
Effective: Sun April 19, 2026, 11:44 AM
Expires: Mon April 20, 2026, 5:45 AM
...The Flood Warning continues for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Cook and Lake IL Counties. Des Plaines River near Des Plaines affecting Cook County. Des Plaines River near Russell affecting Lake IL County. Des Plaines River near Gurnee affecting Lake IL County. * WHAT...Moderate flooding is occurring and moderate flooding is forecasted to occur. * 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 11.0 feet, US-41 (Skokie Highway) threatened near the river in Gurnee. Mundelein Water Reclamation Facility property is threatened near Libertyville. * ADDITIONAL DETAILS... - At 10:30 AM CDT Sunday, the stage was 10.7 feet. - Forecast...The river is expected to gradually fall over the next several days. - 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.
Flood Warning issued April 19 at 11:44AM CDT by NWS Chicago IL
Effective: Sun April 19, 2026, 11:44 AM
Expires: Mon April 20, 2026, 5:45 AM
...The Flood Warning continues for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Cook and Lake IL Counties. Des Plaines River near Des Plaines affecting Cook County. Des Plaines River near Russell affecting Lake IL County. Des Plaines River near Gurnee affecting Lake IL County. * WHAT...Moderate flooding is occurring and major flooding is forecasted to occur. * WHERE...Des Plaines River from Townline Road in Libertyville downstream to Palatine Road in Prospect Heights, including the Lincolnshire gauge. * WHEN...Until further notice. * IMPACTS...At 16.0 feet, Numerous structures threatened along US-45 (Milwaukee Avenue) between IL-22 (Half Day Road) and Deerfield Road. Access route threatened for numerous residences near US-45 (Milwaukee Avenue) and Deerfield Road. IL-60 (Townline Road) threatened near the river. * ADDITIONAL DETAILS... - At 10:45 AM CDT Sunday, the stage was 15.0 feet. - Forecast...The river is expected to rise to a crest near 15.6 feet (Major Flood Stage) late tonight. It will then fall over the next several days. - Flood stage is 12.5 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 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.
Weather Forecast
Air Quality
Nitrogen Dioxide: 9.15 μg/m3
Sulphur Dioxide: 2.67 μg/m3
Ozone: 78.44 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 7:40 PM
Daylight: 13 hrs 36 mins
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 AM3:31 PM - 6:01 PM
Minor Periods
7:19 AM - 8:49 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 5.84 μg/m3
Sulphur Dioxide: 2.91 μg/m3
Ozone: 93.44 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 7:41 PM
Daylight: 13 hrs 39 mins
Moon Transit: 5:06 PM
Moonset: 12:19 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%
Best Times for Fishing or Hunting
Major Periods
4:19 AM - 6:49 AM4:36 PM - 7:06 PM
Minor Periods
8:20 AM - 9:50 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 11.32 μg/m3
Sulphur Dioxide: 2.39 μg/m3
Ozone: 73.16 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: 20.27 μg/m3
Sulphur Dioxide: 3.13 μg/m3
Ozone: 52.69 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: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 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
