Water Temperature of the Rock River in Byron, IL

Current Water Temperature

72.0°F

Measurement Time: Saturday, June 13, 2026, 2:15 AM 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

70°F
Sunny
Sunny
70°F
74.3°F
71%
SSW 11.9 mph
14.3 mph
71.5°F
62.5°F
0 in
25%
9 mi
1014 mbar
3.1

Five Day Weather Forecast

Moderate rain
Sat
H: 88°F
L: 62°F
Sunny
Sun
H: 66°F
L: 54°F
Sunny
Mon
H: 71°F
L: 50°F
Moderate rain
Tue
H: 76°F
L: 54°F
Moderate rain
Wed
H: 73°F
L: 60°F

Air Quality

AQI: 1 - Good
PM2.5: 6 μg/m3
PM10: 6.3 μg/m3
Carbon Monoxide: 129 μg/m3
Nitrogen Dioxide: 4.3 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 63 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:57 AM
Sunset: 8:34 PM
Daylight: 15 hrs 14 mins
Moonrise: 3:28 AM
Moon Transit: 11:24 AM
Moonset: 7:32 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:54 AM - 1:24 PM

Minor Periods

7:02 PM - 8:32 PM
2:58 AM - 4:28 AM

Action Rating: 3 out of 5

Flood Warning issued June 12 at 9:24PM CDT until June 13 at 3:46PM CDT by NWS Chicago IL

Effective: Fri June 12, 2026, 9:24 PM
Expires: Sat June 13, 2026, 3:30 PM

...The Flood Warning is extended for the following rivers in Illinois... Kishwaukee River near Perryville affecting Winnebago County. For the Kishwaukee River...including Perryville...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Kishwaukee River from Confluence with South Branch Kishwaukee River downstream to the Rock River, including the Perryville gauge. * WHEN...Until tomorrow afternoon. * IMPACTS...At 13.0 feet, Roadways threatened at Blackhawk Valley Campground south of Rockford. * ADDITIONAL DETAILS... - At 8:30 PM CDT Friday the stage was 13.1 feet. - Forecast...The river is cresting and will fall below flood stage Saturday afternoon. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood

A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued by Saturday afternoon.


Flood Warning issued June 12 at 11:18AM CDT until June 15 at 7:31AM CDT by NWS Quad Cities IA IL

Effective: Fri June 12, 2026, 11:18 AM
Expires: Sat June 13, 2026, 11:30 AM

...The National Weather Service in Quad Cities IA IL has issued a Flood Warning for the following rivers in Illinois... Rock River near Joslin affecting Rock Island, Henry IL and Whiteside Counties. * WHAT...Minor flooding is forecast. * WHERE...Rock River near Joslin. * WHEN...From Saturday morning to Monday morning. * IMPACTS...At 13.0 feet, Flooding of unprotected agricultural land occurs. Water also affects Lundeens Landing Campground. * ADDITIONAL DETAILS... - At 10:45 AM CDT Friday the stage was 8.2 feet. - Forecast...The river is expected to rise above flood stage late tomorrow morning to a crest of 13.0 feet early Sunday morning. It will then fall below flood stage late Sunday evening. - Flood stage is 12.0 feet.

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. The next statement will be issued by Saturday morning at 1130 AM CDT.


Flood Warning issued June 12 at 9:31PM CDT until June 15 at 6:36AM CDT by NWS Quad Cities IA IL

Effective: Fri June 12, 2026, 9:31 PM
Expires: Sat June 13, 2026, 9:45 PM

...The Flood Warning continues for the following rivers in Iowa... Illinois... Maquoketa River near Maquoketa affecting Jackson County. Cedar River near Conesville affecting Louisa and Muscatine Counties. Rock River near Joslin affecting Henry IL, Whiteside and Rock Island Counties. La Moine River at Colmar affecting McDonough and Hancock Counties. Wapsipinicon River near De Witt 4S affecting Clinton and Scott Counties. Iowa River at Wapello affecting Louisa County. ...The Flood Warning is extended for the following rivers in Illinois... Rock River at Moline affecting Henry IL and Rock Island Counties. ...The Flood Warning is cancelled for the following rivers in Iowa... English River at Kalona affecting Johnson and Washington Counties. .Recent rounds of heavy rainfall are producing flooding on several area tributary rivers. * WHAT...Minor flooding is forecast. * WHERE...Rock River near Joslin. * WHEN...From Saturday morning to Monday morning. * IMPACTS...At 13.0 feet, Flooding of unprotected agricultural land occurs. Water also affects Lundeens Landing Campground. * ADDITIONAL DETAILS... - At 8:45 PM CDT Friday the stage was 10.0 feet and rising. - Forecast...The river is expected to rise above flood stage tomorrow morning to a crest of 13.0 feet early Sunday morning. It will then fall below flood stage late Sunday evening. - 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 this evening at 1045 PM CDT.


Saturday, June 13, 2026

Weather Forecast

Moderate rain
87.6°F
61.9°F
73.7°F
71%
0.26 in
62%
0%
16.6 mph
8.2


Air Quality

AQI: 1 - Good
PM2.5: 6.66 μg/m3
PM10: 7.13 μg/m3
Carbon Monoxide: 129.96 μg/m3
Nitrogen Dioxide: 7.22 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 69.33 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:57 AM
Sunset: 8:34 PM
Daylight: 15 hrs 14 mins
Moonrise: 3:28 AM
Moon Transit: 11:24 AM
Moonset: 7:32 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:54 AM - 1:24 PM

Minor Periods

7:02 PM - 8:32 PM
2:58 AM - 4:28 AM

Action Rating: 3 out of 5

Sunday, June 14, 2026

Weather Forecast

Sunny
65.7°F
54.2°F
60.4°F
70%
0 in
9%
0%
16.8 mph
6.5


Air Quality

AQI: 1 - Good
PM2.5: 2.15 μg/m3
PM10: 2.35 μg/m3
Carbon Monoxide: 113 μg/m3
Nitrogen Dioxide: 4.61 μg/m3
Sulphur Dioxide: 0.28 μg/m3
Ozone: 57.92 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:57 AM
Sunset: 8:35 PM
Daylight: 15 hrs 15 mins
Moonrise: 4:19 AM
Moon Transit: 12:30 AM
Moonset: 8:47 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 2:30 PM

Minor Periods

8:17 PM - 9:47 PM
3:49 AM - 5:19 AM

Action Rating: 5 out of 5

Monday, June 15, 2026

Weather Forecast

Sunny
71.2°F
50.1°F
60.5°F
70%
0 in
7%
0%
12.3 mph
7.5


Air Quality

AQI: 1 - Good
PM2.5: 3.08 μg/m3
PM10: 3.25 μg/m3
Carbon Monoxide: 124.5 μg/m3
Nitrogen Dioxide: 7.31 μg/m3
Sulphur Dioxide: 0.35 μg/m3
Ozone: 57.13 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

Moderate rain
75.7°F
54.3°F
64.1°F
77%
0.28 in
74%
0%
13.2 mph
8.4


Air Quality

AQI: 1 - Good
PM2.5: 3.24 μg/m3
PM10: 3.47 μg/m3
Carbon Monoxide: 126.32 μg/m3
Nitrogen Dioxide: 6.64 μg/m3
Sulphur Dioxide: 0.46 μg/m3
Ozone: 62.38 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

Moderate rain
73°F
59.7°F
65.4°F
89%
0.48 in
89%
0%
17.2 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 3.94 μg/m3
PM10: 4.01 μg/m3
Carbon Monoxide: 153.38 μg/m3
Nitrogen Dioxide: 10.41 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 33.63 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

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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