Water Temperature of the Rock River in Byron, IL

Current Water Temperature

36.5°F

Measurement Time: Sunday, January 11, 2026, 3:15 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

28°F
Overcast
Overcast
15.9°F
23.4°F
75%
WNW 16.6 mph
23 mph
10.9°F
18.9°F
0 in
100%
9 mi
1027 mbar
0.4

Five Day Weather Forecast

Overcast
Sun
H: 31°F
L: 19°F
Overcast
Mon
H: 38°F
L: 27°F
Overcast
Tue
H: 44°F
L: 28°F
Blowing snow
Wed
H: 35°F
L: 16°F
Sunny
Thu
H: 25°F
L: 15°F

Air Quality

AQI: 1 - Good
PM2.5: 2.05 μg/m3
PM10: 2.35 μg/m3
Carbon Monoxide: 183.85 μg/m3
Nitrogen Dioxide: 2.05 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 73 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:05 AM
Sunset: 4:46 PM
Daylight: 9 hrs 22 mins
Moonrise: 1:07 AM
Moon Transit: 6:21 AM
Moonset: 11:27 AM
Moon Phase: Last Quarter
Moon Illumination: 35.3%

Best Times for Fishing or Hunting

Major Periods

5:51 AM - 8:21 AM
6:19 PM - 8:49 PM

Minor Periods

10:57 AM - 12:27 AM
12:37 AM - 2:07 AM

Action Rating: 2 out of 5

Sunday, January 11, 2026

Weather Forecast

Overcast
30.6°F
18.9°F
25.2°F
78%
0 in
0%
3%
17.4 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 3.18 μg/m3
PM10: 3.61 μg/m3
Carbon Monoxide: 197.69 μg/m3
Nitrogen Dioxide: 3.54 μg/m3
Sulphur Dioxide: 1.53 μg/m3
Ozone: 66 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:05 AM
Sunset: 4:46 PM
Daylight: 9 hrs 22 mins
Moonrise: 1:07 AM
Moon Transit: 6:21 AM
Moonset: 11:27 AM
Moon Phase: Last Quarter
Moon Illumination: 35.3%

Best Times for Fishing or Hunting

Major Periods

5:51 AM - 8:21 AM
6:19 PM - 8:49 PM

Minor Periods

10:57 AM - 12:27 AM
12:37 AM - 2:07 AM

Action Rating: 2 out of 5

Monday, January 12, 2026

Weather Forecast

Overcast
37.8°F
27.1°F
30.5°F
74%
0 in
0%
0%
13.9 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 6.43 μg/m3
PM10: 7.6 μg/m3
Carbon Monoxide: 190.93 μg/m3
Nitrogen Dioxide: 6.69 μg/m3
Sulphur Dioxide: 1.97 μg/m3
Ozone: 52.56 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:05 AM
Sunset: 4:47 PM
Daylight: 9 hrs 23 mins
Moonrise: 2:11 AM
Moon Transit: 7:04 AM
Moonset: 11:52 AM
Moon Phase: Last Quarter
Moon Illumination: 25.0%

Best Times for Fishing or Hunting

Major Periods

6:34 AM - 9:04 AM
7:03 PM - 9:33 PM

Minor Periods

11:22 AM - 12:52 AM
1:41 AM - 3:11 AM

Action Rating: 2 out of 5

Tuesday, January 13, 2026

Weather Forecast

Overcast
44.1°F
27.7°F
35.6°F
88%
0 in
0%
0%
19.9 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 9.15 μg/m3
PM10: 9.93 μg/m3
Carbon Monoxide: 190.53 μg/m3
Nitrogen Dioxide: 8.63 μg/m3
Sulphur Dioxide: 1.98 μg/m3
Ozone: 43.64 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 12:05 AM
Sunset: 4:48 PM
Daylight: 9 hrs 25 mins
Moonrise: 3:14 AM
Moon Transit: 7:50 AM
Moonset: 12:22 AM
Moon Phase: Waning Crescent
Moon Illumination: 15.9%

Best Times for Fishing or Hunting

Major Periods

7:20 AM - 9:50 AM
7:51 PM - 10:21 PM

Minor Periods

11:52 AM - 1:22 PM
2:44 AM - 4:14 AM

Action Rating: 3 out of 5

Wednesday, January 14, 2026

Weather Forecast

Blowing snow
35.2°F
16.1°F
26°F
65%
0.01 in
69%
24%
24.4 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 3.28 μg/m3
PM10: 3.71 μg/m3
Carbon Monoxide: 159.33 μg/m3
Nitrogen Dioxide: 3.79 μg/m3
Sulphur Dioxide: 1.66 μg/m3
Ozone: 67.12 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 12:06 AM
Sunset: 4:50 PM
Daylight: 9 hrs 27 mins
Moonrise: 4:18 AM
Moon Transit: 8:39 AM
Moonset: 12:58 AM
Moon Phase: Waning Crescent
Moon Illumination: 8.5%

Best Times for Fishing or Hunting

Major Periods

8:09 AM - 10:39 AM
8:41 PM - 11:11 PM

Minor Periods

12:28 AM - 1:58 PM
3:48 AM - 5:18 AM

Action Rating: 2 out of 5

Thursday, January 15, 2026

Weather Forecast

Sunny
25.3°F
14.5°F
18.1°F
58%
0 in
0%
0%
18.3 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.55 μg/m3
PM10: 2.77 μg/m3
Carbon Monoxide: 163.7 μg/m3
Nitrogen Dioxide: 4.47 μg/m3
Sulphur Dioxide: 2.37 μg/m3
Ozone: 67.46 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 12:06 AM
Sunset: 4:51 PM
Daylight: 9 hrs 28 mins
Moonrise: 5:17 AM
Moon Transit: 9:30 AM
Moonset: 1:42 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:00 AM - 11:30 AM

Minor Periods

1:12 PM - 2:42 PM
4:47 AM - 6:17 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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