Water Temperature of the Fox River in McHenry, IL

Current Water Temperature

32.0°F

Measurement Time: Wednesday, May 6, 2026, 9:12 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

39°F
Clear
Clear
34.4°F
35.7°F
59%
WNW 6.3 mph
13.2 mph
32.2°F
29.2°F
0 in
0%
9 mi
1015 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Thu
H: 57°F
L: 32°F
Patchy rain nearby
Fri
H: 60°F
L: 41°F
Patchy rain nearby
Sat
H: 72°F
L: 43°F
Patchy rain nearby
Sun
H: 58°F
L: 39°F
Partly Cloudy
Mon
H: 54°F
L: 36°F

Air Quality

PM2.5: 7.15 μg/m3
PM10: 7.15 μg/m3
Carbon Monoxide: 178.85 μg/m3
Nitrogen Dioxide: 13.15 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 27 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 12:49 AM
Sunset: 7:59 PM
Daylight: 14 hrs 19 mins
Moonrise: 12:57 AM
Moon Transit: 5:18 AM
Moonset: 9:45 AM
Moon Phase: Waning Gibbous
Moon Illumination: 59.1%

Best Times for Fishing or Hunting

Major Periods

4:48 AM - 7:18 AM
5:27 PM - 7:57 PM

Minor Periods

9:15 AM - 10:45 AM
12:27 AM - 1:57 AM

Action Rating: 3 out of 5

Frost Advisory issued May 6 at 1:23PM CDT until May 7 at 8:00AM CDT by NWS Chicago IL

Effective: Wed May 6, 2026, 1:23 PM
Expires: Wed May 6, 2026, 11:30 PM

* WHAT...Temperatures in the low to mid 30s and areas of frost. * WHERE...Portions of north central and northeast Illinois. * WHEN...From 1 AM to 8 AM CDT Thursday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.


Frost Advisory issued May 6 at 9:01PM CDT until May 7 at 8:00AM CDT by NWS Chicago IL

Effective: Wed May 6, 2026, 9:01 PM
Expires: Thu May 7, 2026, 7:15 AM

* WHAT...Temperatures in the low to mid 30s and areas of frost. * WHERE...Portions of north central and northeast Illinois. * WHEN...From 1 AM to 8 AM CDT Thursday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.


Frost Advisory issued May 6 at 1:20PM CDT until May 7 at 8:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed May 6, 2026, 1:20 PM
Expires: Wed May 6, 2026, 9:30 PM

* WHAT...Temperatures as low as 30 will result in frost formation. * WHERE...Portions of east central, south central, and southeast Wisconsin. * WHEN...From 1 AM to 8 AM CDT Thursday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.


Frost Advisory issued May 6 at 6:51PM CDT until May 7 at 8:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed May 6, 2026, 6:51 PM
Expires: Thu May 7, 2026, 3:00 AM

* WHAT...Temperatures as low as 30 will result in frost formation. * WHERE...Portions of east central, south central, and southeast Wisconsin. * WHEN...From 1 AM to 8 AM CDT Thursday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.


Frost Advisory issued May 7 at 12:38AM CDT until May 7 at 8:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Thu May 7, 2026, 12:38 AM
Expires: Thu May 7, 2026, 8:00 AM

* WHAT...Temperatures as low as 30 will result in frost formation. * WHERE...Portions of east central, south central, and southeast Wisconsin. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.
Thursday, May 7, 2026

Weather Forecast

Patchy rain nearby
56.7°F
32.4°F
45.1°F
69%
0.1 in
88%
0%
11.6 mph
5.5


Air Quality

AQI: 1 - Good
PM2.5: 4.62 μg/m3
PM10: 4.74 μg/m3
Carbon Monoxide: 156.93 μg/m3
Nitrogen Dioxide: 7.6 μg/m3
Sulphur Dioxide: 1.38 μg/m3
Ozone: 60.88 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 12:49 AM
Sunset: 7:59 PM
Daylight: 14 hrs 19 mins
Moonrise: 12:57 AM
Moon Transit: 5:18 AM
Moonset: 9:45 AM
Moon Phase: Waning Gibbous
Moon Illumination: 59.1%

Best Times for Fishing or Hunting

Major Periods

4:48 AM - 7:18 AM
5:27 PM - 7:57 PM

Minor Periods

9:15 AM - 10:45 AM
12:27 AM - 1:57 AM

Action Rating: 3 out of 5

Friday, May 8, 2026

Weather Forecast

Patchy rain nearby
59.6°F
41.2°F
50.3°F
81%
0.03 in
88%
0%
12.5 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 8.64 μg/m3
PM10: 9.19 μg/m3
Carbon Monoxide: 197.05 μg/m3
Nitrogen Dioxide: 6.76 μg/m3
Sulphur Dioxide: 1.72 μg/m3
Ozone: 77.36 μg/m3

Astronomical

Sunrise: 5:39 AM
Sun Transit: 12:49 AM
Sunset: 8:00 PM
Daylight: 14 hrs 21 mins
Moonrise: 1:31 AM
Moon Transit: 6:06 AM
Moonset: 10:50 AM
Moon Phase: Last Quarter
Moon Illumination: 47.9%

Best Times for Fishing or Hunting

Major Periods

5:36 AM - 8:06 AM
6:15 PM - 8:45 PM

Minor Periods

10:20 AM - 11:50 AM
1:01 AM - 2:31 AM

Action Rating: 3 out of 5

Saturday, May 9, 2026

Weather Forecast

Patchy rain nearby
71.8°F
42.8°F
54.5°F
78%
0.04 in
88%
0%
19.5 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 14.47 μg/m3
PM10: 14.92 μg/m3
Carbon Monoxide: 176.82 μg/m3
Nitrogen Dioxide: 10.31 μg/m3
Sulphur Dioxide: 3 μg/m3
Ozone: 76.68 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 12:49 AM
Sunset: 8:02 PM
Daylight: 14 hrs 24 mins
Moonrise: 1:59 AM
Moon Transit: 6:53 AM
Moonset: 11:56 AM
Moon Phase: Last Quarter
Moon Illumination: 36.7%

Best Times for Fishing or Hunting

Major Periods

6:23 AM - 8:53 AM
7:00 PM - 9:30 PM

Minor Periods

11:26 AM - 12:56 AM
1:29 AM - 2:59 AM

Action Rating: 2 out of 5

Sunday, May 10, 2026

Weather Forecast

Patchy rain nearby
57.9°F
38.8°F
47.7°F
70%
0.01 in
83%
0%
9.4 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 9.14 μg/m3
PM10: 9.51 μg/m3
Carbon Monoxide: 165.79 μg/m3
Nitrogen Dioxide: 7.03 μg/m3
Sulphur Dioxide: 1.76 μg/m3
Ozone: 65.54 μg/m3

Astronomical

Sunrise: 5:37 AM
Sun Transit: 12:49 AM
Sunset: 8:03 PM
Daylight: 14 hrs 26 mins
Moonrise: 2:24 AM
Moon Transit: 7:38 AM
Moonset: 1:04 PM
Moon Phase: Last Quarter
Moon Illumination: 26.2%

Best Times for Fishing or Hunting

Major Periods

7:08 AM - 9:38 AM
7:45 PM - 10:15 PM

Minor Periods

12:34 AM - 2:04 PM
1:54 AM - 3:24 AM

Action Rating: 3 out of 5

Monday, May 11, 2026

Weather Forecast

Partly Cloudy
53.9°F
35.9°F
43.9°F
73%
0 in
0%
0%
7.2 mph
3


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: 5:36 AM
Sun Transit: 12:49 AM
Sunset: 8:04 PM
Daylight: 14 hrs 28 mins
Moonrise: 2:46 AM
Moon Transit: 8:23 AM
Moonset: 2:12 PM
Moon Phase: Last Quarter
Moon Illumination: 16.9%

Best Times for Fishing or Hunting

Major Periods

7:53 AM - 10:23 AM
12:00 AM - 12:00 AM

Minor Periods

1:42 PM - 3:12 PM
2:16 AM - 3:46 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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