Water Temperature of the Rock River in Byron, IL

Current Water Temperature

71.6°F

Measurement Time: Sunday, June 14, 2026, 8:15 PM CDT

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

50.7°F
Clear
Clear
48°F
54.2°F
93%
W 7.2 mph
15 mph
54.2°F
46.7°F
0 in
0%
9 mi
1016 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 80°F
L: 52°F
Patchy rain nearby
Tue
H: 70°F
L: 52°F
Heavy rain
Wed
H: 64°F
L: 50°F
Patchy rain nearby
Thu
H: 63°F
L: 54°F
Sunny
Fri
H: 68°F
L: 47°F

Air Quality

AQI: 1 - Good
PM2.5: 5.3 μg/m3
PM10: 5.5 μg/m3
Carbon Monoxide: 136 μg/m3
Nitrogen Dioxide: 23.9 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 19 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:57 AM
Sunset: 8:35 PM
Daylight: 15 hrs 15 mins
Moonrise: 5:23 AM
Moon Transit: 1:38 PM
Moonset: 9:50 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

12:41 AM - 3:11 AM
1:08 PM - 3:38 PM

Minor Periods

9:20 PM - 10:50 PM
4:53 AM - 6:23 AM

Action Rating: 4 out of 5

Flood Warning issued June 14 at 9:17AM CDT until June 15 at 3:00PM CDT by NWS Quad Cities IA IL

Effective: Sun June 14, 2026, 9:17 AM
Expires: Mon June 15, 2026, 9:30 AM

...The Flood Warning is extended for the following rivers in Illinois... Rock River near Joslin affecting Rock Island, Whiteside and Henry IL Counties. Rock River at Moline affecting Rock Island and Henry IL Counties. * WHAT...Minor flooding is occurring. * WHERE...Rock River near Joslin. * WHEN...Until tomorrow afternoon. * IMPACTS...At 12.5 feet, Water affects some summer cottages along the river. * ADDITIONAL DETAILS... - At 8:45 AM CDT Sunday the stage was 12.7 feet. - Forecast...The river is expected to fall below flood stage tomorrow morning and continue falling to 7.5 feet Sunday, June 21. - Flood stage is 12.0 feet.

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. The next statement will be issued by Monday morning at 930 AM CDT.


Flood Warning issued June 14 at 8:12PM CDT until June 16 at 12:00AM CDT by NWS Quad Cities IA IL

Effective: Sun June 14, 2026, 8:12 PM
Expires: Mon June 15, 2026, 8:15 PM

...The Flood Warning is extended for the following rivers in Iowa... Illinois... Wapsipinicon River near De Witt 4S affecting Scott and Clinton Counties. Rock River near Joslin affecting Rock Island, Whiteside and Henry IL Counties. Rock River at Moline affecting Rock Island and Henry IL Counties. * WHAT...Minor flooding is occurring. * WHERE...Rock River near Joslin. * WHEN...Until early Tuesday morning. * IMPACTS...At 12.5 feet, Water affects some summer cottages along the river. * ADDITIONAL DETAILS... - At 7:45 PM CDT Sunday the stage was 12.7 feet and steady. - The river is near crest now. - Forecast...The river is expected to fall below flood stage tomorrow afternoon and continue falling to 7.4 feet Sunday, June 21. - Flood stage is 12.0 feet.

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. The next statement will be issued by Monday evening at 815 PM CDT.
Monday, June 15, 2026

Weather Forecast

Sunny
80.1°F
51.8°F
63.9°F
63%
0 in
17%
0%
12.8 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 3.37 μg/m3
PM10: 3.49 μg/m3
Carbon Monoxide: 123.42 μg/m3
Nitrogen Dioxide: 8.4 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 56.67 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:57 AM
Sunset: 8:35 PM
Daylight: 15 hrs 15 mins
Moonrise: 5:23 AM
Moon Transit: 1:38 PM
Moonset: 9:50 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

12:41 AM - 3:11 AM
1:08 PM - 3:38 PM

Minor Periods

9:20 PM - 10:50 PM
4:53 AM - 6:23 AM

Action Rating: 4 out of 5

Tuesday, June 16, 2026

Weather Forecast

Patchy rain nearby
70.3°F
51.9°F
60.9°F
81%
0.19 in
77%
0%
21 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 3.1 μg/m3
PM10: 3.27 μg/m3
Carbon Monoxide: 120.04 μg/m3
Nitrogen Dioxide: 5.78 μg/m3
Sulphur Dioxide: 0.63 μg/m3
Ozone: 66.33 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:57 AM
Sunset: 8:36 PM
Daylight: 15 hrs 15 mins
Moonrise: 6:39 AM
Moon Transit: 2:44 PM
Moonset: 10:40 PM
Moon Phase: New
Moon Illumination: 1.0%

Best Times for Fishing or Hunting

Major Periods

1:48 AM - 4:18 AM
2:14 PM - 4:44 PM

Minor Periods

10:10 PM - 11:40 PM
6:09 AM - 7:39 AM

Action Rating: 3 out of 5

Wednesday, June 17, 2026

Weather Forecast

Heavy rain
64.4°F
50.4°F
58.5°F
88%
0.96 in
86%
0%
16.1 mph
2.8


Air Quality

AQI: 1 - Good
PM2.5: 2.68 μg/m3
PM10: 2.87 μg/m3
Carbon Monoxide: 133 μg/m3
Nitrogen Dioxide: 6.66 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 58.71 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:58 AM
Sunset: 8:36 PM
Daylight: 15 hrs 16 mins
Moonrise: 7:59 AM
Moon Transit: 3:45 PM
Moonset: 11:17 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.6%

Best Times for Fishing or Hunting

Major Periods

2:51 AM - 5:21 AM
3:15 PM - 5:45 PM

Minor Periods

12:00 AM - 12:00 AM
7:29 AM - 8:59 AM

Action Rating: 3 out of 5

Thursday, June 18, 2026

Weather Forecast

Patchy rain nearby
63.3°F
54.1°F
61°F
90%
0.08 in
78%
0%
12.8 mph
6.8


Air Quality

AQI: 1 - Good
PM2.5: 1.12 μg/m3
PM10: 1.13 μg/m3
Carbon Monoxide: 117.85 μg/m3
Nitrogen Dioxide: 3.91 μg/m3
Sulphur Dioxide: 0.25 μg/m3
Ozone: 63.42 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:58 AM
Sunset: 8:36 PM
Daylight: 15 hrs 16 mins
Moonrise: 9:19 AM
Moon Transit: 4:39 PM
Moonset: 12:17 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.4%

Best Times for Fishing or Hunting

Major Periods

3:49 AM - 6:19 AM
4:09 PM - 6:39 PM

Minor Periods

8:49 AM - 10:19 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Friday, June 19, 2026

Weather Forecast

Sunny
67.6°F
47.1°F
56.5°F
79%
0 in
13%
0%
14.3 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 2.89 μg/m3
PM10: 2.89 μg/m3
Carbon Monoxide: 172 μg/m3
Nitrogen Dioxide: 15.49 μg/m3
Sulphur Dioxide: 0.34 μg/m3
Ozone: 29.5 μg/m3

Astronomical

Sunrise: 5:21 AM
Sun Transit: 12:58 AM
Sunset: 8:36 PM
Daylight: 15 hrs 16 mins
Moonrise: 10:35 AM
Moon Transit: 5:29 PM
Moonset: 12:46 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.3%

Best Times for Fishing or Hunting

Major Periods

4:41 AM - 7:11 AM
4:59 PM - 7:29 PM

Minor Periods

10:05 AM - 11:35 AM
12:00 AM - 12:00 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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