Water Temperature of the Rock River in Byron, IL

Current Water Temperature

38.3°F

Measurement Time: Saturday, February 28, 2026, 11:15 AM CST

Temperature Locations

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Local Points of Interest

River Park East; Hamas Park; Sunshine Park; Byron Forest Preserve District

Rock River

Station Name: ROCK RIVER AT BYRON, IL
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 679 feet

Nearest Address:
State Rte 72
Byron, IL 61010
Ogle County

GPS Coordinates: 42.12218889, -89.2553639

Nearby Water Temperatures

Mississippi River, Fulton, IL (48.7 mi)
Mississippi River, Fulton, IL (48.9 mi)
Beaver Slough, Clinton, IA (52.2 mi)
Fox River, McHenry, IL (53.2 mi)
Mississippi River, Camanche, IA (56.4 mi)
Illinois River, Utica, IL (56.9 mi)
Sugar River, Verona, WI (59 mi)
Mississippi River, Bellevue, IA (60.5 mi)
Badger Mill Creek, Verona, WI (60.8 mi)
Swan Creek, Fitchburg, WI (60.9 mi)
Illinois River, Marseilles, IL (61.7 mi)
Fox River, Burlington, WI (62.5 mi)
Lake Monona, Madison, WI (65.4 mi)
Eagle Spring Lake, Mukwonago, WI (65.6 mi)
Illinois River, Seneca, IL (65.7 mi)

Weather for Byron, Illinois

Current Weather

27°F
Overcast
Overcast
16.6°F
33.1°F
68%
NE 11.6 mph
15.3 mph
24.6°F
23.3°F
0 in
100%
9 mi
1025 mbar
0

Five Day Weather Forecast

Partly Cloudy
Sat
H: 39°F
L: 26°F
Cloudy
Sun
H: 38°F
L: 23°F
Partly Cloudy
Mon
H: 45°F
L: 25°F
Patchy rain nearby
Tue
H: 41°F
L: 31°F
Heavy rain
Wed
H: 47°F
L: 39°F

Air Quality

AQI: 1 - Good
PM2.5: 5.15 μg/m3
PM10: 5.45 μg/m3
Carbon Monoxide: 185.85 μg/m3
Nitrogen Dioxide: 6.65 μg/m3
Sulphur Dioxide: 2.45 μg/m3
Ozone: 67 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:09 AM
Sunset: 5:46 PM
Daylight: 11 hrs 12 mins
Moonrise: 2:43 PM
Moon Transit: 10:20 PM
Moonset: 5:11 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.1%

Best Times for Fishing or Hunting

Major Periods

9:30 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

2:13 PM - 3:43 PM
4:41 AM - 6:11 AM

Action Rating: 3 out of 5

Saturday, February 28, 2026

Weather Forecast

Partly Cloudy
38.5°F
26.4°F
33°F
58%
0 in
0%
0%
14.5 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 5.49 μg/m3
PM10: 6.22 μg/m3
Carbon Monoxide: 176.13 μg/m3
Nitrogen Dioxide: 5.47 μg/m3
Sulphur Dioxide: 2.07 μg/m3
Ozone: 74.48 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:09 AM
Sunset: 5:46 PM
Daylight: 11 hrs 12 mins
Moonrise: 2:43 PM
Moon Transit: 10:20 PM
Moonset: 5:11 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.1%

Best Times for Fishing or Hunting

Major Periods

9:30 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

2:13 PM - 3:43 PM
4:41 AM - 6:11 AM

Action Rating: 3 out of 5

Sunday, March 1, 2026

Weather Forecast

Cloudy
38.1°F
23°F
28.5°F
63%
0 in
0%
0%
10.7 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 4.91 μg/m3
PM10: 5.49 μg/m3
Carbon Monoxide: 178.57 μg/m3
Nitrogen Dioxide: 5.37 μg/m3
Sulphur Dioxide: 2.42 μg/m3
Ozone: 74.04 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 12:09 AM
Sunset: 5:47 PM
Daylight: 11 hrs 15 mins
Moonrise: 3:58 PM
Moon Transit: 11:10 PM
Moonset: 5:43 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 95.8%

Best Times for Fishing or Hunting

Major Periods

10:22 AM - 12:52 AM
12:00 AM - 12:00 AM

Minor Periods

3:28 PM - 4:58 PM
5:13 AM - 6:43 AM

Action Rating: 3 out of 5

Monday, March 2, 2026

Weather Forecast

Partly Cloudy
45°F
24.8°F
33°F
60%
0 in
0%
0%
10.3 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 7.31 μg/m3
PM10: 8.46 μg/m3
Carbon Monoxide: 194.77 μg/m3
Nitrogen Dioxide: 10.43 μg/m3
Sulphur Dioxide: 4.73 μg/m3
Ozone: 68.32 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 12:09 AM
Sunset: 5:48 PM
Daylight: 11 hrs 18 mins
Moonrise: 5:11 PM
Moon Transit: 11:58 PM
Moonset: 6:10 AM
Moon Phase: Full
Moon Illumination: 99.1%

Best Times for Fishing or Hunting

Major Periods

11:11 AM - 1:41 PM
12:00 AM - 12:00 AM

Minor Periods

4:41 PM - 6:11 PM
5:40 AM - 7:10 AM

Action Rating: 4 out of 5

Tuesday, March 3, 2026

Weather Forecast

Patchy rain nearby
40.8°F
31.3°F
35.4°F
87%
0.05 in
89%
0%
8.7 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 11.35 μg/m3
PM10: 12.22 μg/m3
Carbon Monoxide: 249.71 μg/m3
Nitrogen Dioxide: 8.32 μg/m3
Sulphur Dioxide: 5.2 μg/m3
Ozone: 62.52 μg/m3

Astronomical

Sunrise: 6:29 AM
Sun Transit: 12:08 AM
Sunset: 5:50 PM
Daylight: 11 hrs 21 mins
Moonrise: 6:21 PM
Moon Transit: 12:00 AM
Moonset: 6:32 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:56 AM - 2:26 PM

Minor Periods

5:51 PM - 7:21 PM
6:02 AM - 7:32 AM

Action Rating: 5 out of 5

Wednesday, March 4, 2026

Weather Forecast

Heavy rain
46.8°F
39.2°F
43.1°F
98%
1.94 in
88%
0%
13.6 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 8.3 μg/m3
PM10: 8.44 μg/m3
Carbon Monoxide: 212.66 μg/m3
Nitrogen Dioxide: 7.82 μg/m3
Sulphur Dioxide: 3.13 μg/m3
Ozone: 68.31 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 12:08 AM
Sunset: 5:51 PM
Daylight: 11 hrs 23 mins
Moonrise: 7:28 PM
Moon Transit: 12:42 AM
Moonset: 6:52 AM
Moon Phase: Full
Moon Illumination: 98.2%

Best Times for Fishing or Hunting

Major Periods

12:12 AM - 2:42 AM
12:40 AM - 3:10 PM

Minor Periods

6:58 PM - 8:28 PM
6:22 AM - 7:52 AM

Action Rating: 4 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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