Water Temperature of the Fox River in McHenry, IL

Current Water Temperature

32.0°F

Measurement Time: Wednesday, May 20, 2026, 9:21 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

56.8°F
Sunny
Sunny
54.3°F
56.8°F
53%
NE 10.5 mph
12.1 mph
54.3°F
41°F
0 in
8%
6 mi
1026 mbar
6.5

Five Day Weather Forecast

Sunny
Wed
H: 58°F
L: 41°F
Sunny
Thu
H: 59°F
L: 40°F
Patchy rain nearby
Fri
H: 58°F
L: 47°F
Patchy rain nearby
Sat
H: 65°F
L: 50°F
Patchy rain nearby
Sun
H: 76°F
L: 59°F

Air Quality

PM2.5: 2.45 μg/m3
PM10: 2.45 μg/m3
Carbon Monoxide: 130.85 μg/m3
Nitrogen Dioxide: 3.85 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 71 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 12:49 AM
Sunset: 8:13 PM
Daylight: 14 hrs 46 mins
Moonrise: 8:59 AM
Moon Transit: 4:57 PM
Moonset: 12:02 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.4%

Best Times for Fishing or Hunting

Major Periods

4:12 AM - 6:42 AM
4:27 PM - 6:57 PM

Minor Periods

8:29 AM - 9:59 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Beach Hazards Statement issued May 20 at 3:42AM CDT until May 21 at 1:00PM CDT by NWS Chicago IL

Effective: Wed May 20, 2026, 3:42 AM
Expires: Wed May 20, 2026, 11:45 AM

* WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 4 to 6 ft expected. * WHERE...Lake IL, Northern Cook and Central Cook Counties. * WHEN...From 1 PM CDT this afternoon through Thursday afternoon. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com.

Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures.


Beach Hazards Statement issued May 20 at 10:31AM CDT until May 21 at 1:00PM CDT by NWS Chicago IL

Effective: Wed May 20, 2026, 10:31 AM
Expires: Wed May 20, 2026, 6:45 PM

* WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 3 to 6 ft expected. * WHERE...Lake IL, Northern Cook and Central Cook Counties. * WHEN...Through Thursday afternoon. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com.

Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures.


Beach Hazards Statement issued May 20 at 2:28AM CDT until May 21 at 10:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed May 20, 2026, 2:28 AM
Expires: Wed May 20, 2026, 10:30 AM

* WHAT...Life threatening waves of 3 to 5 feet and dangerous currents are expected. * WHERE...Milwaukee, Racine and Kenosha Counties. * WHEN...From 7 PM Wednesday to 10 AM CDT Thursday. * IMPACTS...Dangerous swimming conditions are expected due to high waves and onshore winds.

Stay out of the water and away from dangerous areas like piers and breakwalls. Strong structural and longshore currents are expected. Rip currents are possible.


Beach Hazards Statement issued May 20 at 8:51AM CDT until May 21 at 1:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed May 20, 2026, 8:51 AM
Expires: Wed May 20, 2026, 5:00 PM

* WHAT...Life threatening waves of 2 to 4 feet and dangerous currents are expected. * WHERE...Milwaukee, Racine and Kenosha Counties. * WHEN...From 3 PM CDT this afternoon through Thursday afternoon. * IMPACTS...Dangerous swimming conditions are expected due to high waves and onshore winds.

Stay out of the water and away from dangerous areas like piers and breakwalls. Strong structural and longshore currents are expected. Rip currents are possible.
Wednesday, May 20, 2026

Weather Forecast

Sunny
57.7°F
40.9°F
48.9°F
69%
0 in
0%
0%
12.1 mph
7.2


Air Quality

AQI: 1 - Good
PM2.5: 2.33 μg/m3
PM10: 2.43 μg/m3
Carbon Monoxide: 126.77 μg/m3
Nitrogen Dioxide: 3.87 μg/m3
Sulphur Dioxide: 1.16 μg/m3
Ozone: 59.48 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 12:49 AM
Sunset: 8:13 PM
Daylight: 14 hrs 46 mins
Moonrise: 8:59 AM
Moon Transit: 4:57 PM
Moonset: 12:02 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.4%

Best Times for Fishing or Hunting

Major Periods

4:12 AM - 6:42 AM
4:27 PM - 6:57 PM

Minor Periods

8:29 AM - 9:59 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, May 21, 2026

Weather Forecast

Sunny
59.4°F
40.4°F
50.1°F
66%
0 in
0%
0%
14.1 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 2.81 μg/m3
PM10: 2.98 μg/m3
Carbon Monoxide: 128.14 μg/m3
Nitrogen Dioxide: 4.78 μg/m3
Sulphur Dioxide: 1.4 μg/m3
Ozone: 70.6 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 12:49 AM
Sunset: 8:14 PM
Daylight: 14 hrs 48 mins
Moonrise: 10:18 AM
Moon Transit: 5:53 PM
Moonset: 12:44 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%

Best Times for Fishing or Hunting

Major Periods

5:11 AM - 7:41 AM
5:23 PM - 7:53 PM

Minor Periods

9:48 AM - 11:18 AM
12:14 AM - 1:44 AM

Action Rating: 4 out of 5

Friday, May 22, 2026

Weather Forecast

Patchy rain nearby
57.6°F
46.6°F
52°F
73%
0.04 in
76%
0%
13.2 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 5.77 μg/m3
PM10: 5.88 μg/m3
Carbon Monoxide: 164.78 μg/m3
Nitrogen Dioxide: 8.69 μg/m3
Sulphur Dioxide: 1.99 μg/m3
Ozone: 59.36 μg/m3

Astronomical

Sunrise: 5:25 AM
Sun Transit: 12:49 AM
Sunset: 8:15 PM
Daylight: 14 hrs 50 mins
Moonrise: 11:33 AM
Moon Transit: 6:44 PM
Moonset: 1:15 AM
Moon Phase: Waxing Crescent
Moon Illumination: 33.4%

Best Times for Fishing or Hunting

Major Periods

6:04 AM - 8:34 AM
6:14 PM - 8:44 PM

Minor Periods

11:03 AM - 12:33 AM
12:45 AM - 2:15 AM

Action Rating: 3 out of 5

Saturday, May 23, 2026

Weather Forecast

Patchy rain nearby
65.3°F
50.4°F
54.9°F
87%
0.02 in
87%
0%
11.4 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 5.94 μg/m3
PM10: 5.95 μg/m3
Carbon Monoxide: 193.54 μg/m3
Nitrogen Dioxide: 9.49 μg/m3
Sulphur Dioxide: 1.69 μg/m3
Ozone: 50.62 μg/m3

Astronomical

Sunrise: 5:24 AM
Sun Transit: 12:49 AM
Sunset: 8:16 PM
Daylight: 14 hrs 52 mins
Moonrise: 12:45 AM
Moon Transit: 7:30 PM
Moonset: 1:41 AM
Moon Phase: First Quarter
Moon Illumination: 44.4%

Best Times for Fishing or Hunting

Major Periods

6:52 AM - 9:22 AM
7:00 PM - 9:30 PM

Minor Periods

12:15 AM - 1:45 PM
1:11 AM - 2:41 AM

Action Rating: 2 out of 5

Sunday, May 24, 2026

Weather Forecast

Patchy rain nearby
76.4°F
58.7°F
67.9°F
89%
0.1 in
80%
0%
11.2 mph
4


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:23 AM
Sun Transit: 12:49 AM
Sunset: 8:17 PM
Daylight: 14 hrs 53 mins
Moonrise: 1:53 PM
Moon Transit: 8:14 PM
Moonset: 2:03 AM
Moon Phase: First Quarter
Moon Illumination: 55.7%

Best Times for Fishing or Hunting

Major Periods

7:37 AM - 10:07 AM
7:44 PM - 10:14 PM

Minor Periods

1:23 PM - 2:53 PM
1:33 AM - 3:03 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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