Water Temperature of the Fox River in McHenry, IL

Current Water Temperature

48.0°F

Measurement Time: Wednesday, March 11, 2026, 3:00 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

35.1°F
Overcast
Overcast
26.1°F
34.8°F
92%
NNW 13.2 mph
16.4 mph
26°F
33.1°F
0 in
100%
9 mi
1006 mbar
0.1

Five Day Weather Forecast

Patchy rain nearby
Wed
H: 38°F
L: 32°F
Partly Cloudy
Thu
H: 48°F
L: 27°F
Overcast
Fri
H: 45°F
L: 30°F
Moderate or heavy snow showers
Sat
H: 39°F
L: 24°F
Moderate or heavy freezing rain
Sun
H: 35°F
L: 26°F

Air Quality

AQI: 1 - Good
PM2.5: 1.65 μg/m3
PM10: 1.75 μg/m3
Carbon Monoxide: 180.85 μg/m3
Nitrogen Dioxide: 3.15 μg/m3
Sulphur Dioxide: 1.75 μg/m3
Ozone: 84 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:00 AM
Sunset: 6:55 PM
Daylight: 11 hrs 44 mins
Moonrise: 2:50 AM
Moon Transit: 7:00 AM
Moonset: 11:10 AM
Moon Phase: Last Quarter
Moon Illumination: 36.0%

Best Times for Fishing or Hunting

Major Periods

6:30 AM - 9:00 AM
7:10 PM - 9:40 PM

Minor Periods

10:40 AM - 12:10 AM
2:20 AM - 3:50 AM

Action Rating: 3 out of 5

Flood Warning issued March 11 at 1:35AM CDT until March 12 at 7:30AM CDT by NWS Chicago IL

Effective: Wed March 11, 2026, 1:35 AM
Expires: Wed March 11, 2026, 7:45 PM

...The National Weather Service in Chicago IL has issued a Flood Warning for the following rivers in Illinois... Thorn Creek at Thornton affecting Cook County. For the Thorn Creek...including Thornton...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Thorn Creek from Near Glenwood downstream to confluence with Little Calumet River, including the Thornton gauge. * WHEN...From this morning to tomorrow morning. * IMPACTS...At 9.0 feet, Water begins to be diverted through Thorn Creek Diversion Tunnel. * ADDITIONAL DETAILS... - At 1:15 AM CDT Wednesday the stage was 4.4 feet. - Forecast...The river is expected to rise above flood stage late this morning to a crest of 9.9 feet this evening. It will then fall below flood stage just after midnight tonight. - Flood stage is 9.0 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 this evening.
Wednesday, March 11, 2026

Weather Forecast

Patchy rain nearby
37.6°F
32.2°F
36°F
89%
0.04 in
89%
0%
18.6 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 5.09 μg/m3
PM10: 5.15 μg/m3
Carbon Monoxide: 191.09 μg/m3
Nitrogen Dioxide: 7.49 μg/m3
Sulphur Dioxide: 1.76 μg/m3
Ozone: 59.84 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:00 AM
Sunset: 6:55 PM
Daylight: 11 hrs 44 mins
Moonrise: 2:50 AM
Moon Transit: 7:00 AM
Moonset: 11:10 AM
Moon Phase: Last Quarter
Moon Illumination: 36.0%

Best Times for Fishing or Hunting

Major Periods

6:30 AM - 9:00 AM
7:10 PM - 9:40 PM

Minor Periods

10:40 AM - 12:10 AM
2:20 AM - 3:50 AM

Action Rating: 3 out of 5

Thursday, March 12, 2026

Weather Forecast

Partly Cloudy
47.5°F
27.3°F
36.9°F
65%
0 in
0%
0%
24.2 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 5.58 μg/m3
PM10: 7.03 μg/m3
Carbon Monoxide: 178.37 μg/m3
Nitrogen Dioxide: 4.95 μg/m3
Sulphur Dioxide: 2.02 μg/m3
Ozone: 82.24 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 12:00 AM
Sunset: 6:56 PM
Daylight: 11 hrs 47 mins
Moonrise: 3:41 AM
Moon Transit: 7:52 AM
Moonset: 12:04 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

7:22 AM - 9:52 AM
8:02 PM - 10:32 PM

Minor Periods

11:34 AM - 1:04 PM
3:11 AM - 4:41 AM

Action Rating: 3 out of 5

Friday, March 13, 2026

Weather Forecast

Overcast
45.3°F
30°F
38.7°F
57%
0 in
0%
0%
32.7 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.05 μg/m3
PM10: 3.64 μg/m3
Carbon Monoxide: 165.77 μg/m3
Nitrogen Dioxide: 3.47 μg/m3
Sulphur Dioxide: 2.02 μg/m3
Ozone: 94.6 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 12:00 AM
Sunset: 6:57 PM
Daylight: 11 hrs 49 mins
Moonrise: 4:26 AM
Moon Transit: 8:43 AM
Moonset: 1:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 16.4%

Best Times for Fishing or Hunting

Major Periods

8:13 AM - 10:43 AM
8:53 PM - 11:23 PM

Minor Periods

12:36 AM - 2:06 PM
3:56 AM - 5:26 AM

Action Rating: 2 out of 5

Saturday, March 14, 2026

Weather Forecast

Moderate or heavy snow showers
38.7°F
23.7°F
30°F
62%
0.36 in
62%
22%
15.2 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 6.14 μg/m3
PM10: 7.15 μg/m3
Carbon Monoxide: 201.01 μg/m3
Nitrogen Dioxide: 10.67 μg/m3
Sulphur Dioxide: 3.95 μg/m3
Ozone: 73.6 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 12:00 AM
Sunset: 6:59 PM
Daylight: 11 hrs 52 mins
Moonrise: 5:03 AM
Moon Transit: 9:34 AM
Moonset: 2:13 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:04 AM - 11:34 AM

Minor Periods

1:43 PM - 3:13 PM
4:33 AM - 6:03 AM

Action Rating: 2 out of 5

Sunday, March 15, 2026

Weather Forecast

Moderate or heavy freezing rain
35°F
25.7°F
31.4°F
97%
1.38 in
64%
64%
23.7 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 8.1 μg/m3
PM10: 10.23 μg/m3
Carbon Monoxide: 206.62 μg/m3
Nitrogen Dioxide: 12.13 μg/m3
Sulphur Dioxide: 4.51 μg/m3
Ozone: 70.62 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:00 AM
Sunset: 7:00 PM
Daylight: 11 hrs 55 mins
Moonrise: 5:33 AM
Moon Transit: 10:23 AM
Moonset: 3:22 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:53 AM - 12:23 AM

Minor Periods

2:52 PM - 4:22 PM
5:03 AM - 6:33 AM

Action Rating: 2 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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