Water Temperature of the Rock River in Byron, IL

Current Water Temperature

72.0°F

Measurement Time: Tuesday, June 16, 2026, 8:15 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

72°F
Partly cloudy
Partly cloudy
76°F
72.4°F
43%
WNW 21.3 mph
24.4 mph
70.5°F
50.7°F
0 in
50%
9 mi
1003 mbar
6.2

Five Day Weather Forecast

Patchy rain nearby
Tue
H: 76°F
L: 58°F
Heavy rain
Wed
H: 58°F
L: 52°F
Patchy rain nearby
Thu
H: 67°F
L: 55°F
Sunny
Fri
H: 69°F
L: 52°F
Patchy rain nearby
Sat
H: 71°F
L: 53°F

Air Quality

AQI: 1 - Good
PM2.5: 1 μg/m3
PM10: 1.1 μg/m3
Carbon Monoxide: 106 μg/m3
Nitrogen Dioxide: 0.7 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 82 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

Hydrologic Outlook issued June 16 at 2:44AM CDT by NWS Chicago IL

Effective: Tue June 16, 2026, 2:44 AM
Expires: Tue June 16, 2026, 3:00 PM

ESFLOT Period of showers and thunderstorms are expected Wednesday. Thunderstorms will be very efficient at producing torrential rainfall, with some areas likely receiving up 2 inches of rain in just an hour. Rainfall that intense would likely result in flash flooding. In addition, localized rainfall totals in excess of 3 inches are possible across northern and central Illinois and northwest Indiana through the day Wednesday, which could result in significant rises and possible flooding on area streams and rivers. Recent heavy rainfall has left streamflow above average in many areas and grounds still saturated. This will further increase the threat of flooding. Anyone in or near flood prone areas should closely monitor later forecasts.
Tuesday, June 16, 2026

Weather Forecast

Patchy rain nearby
75.6°F
57.9°F
66°F
62%
0.01 in
17%
0%
21.3 mph
7.5


Air Quality

AQI: 1 - Good
PM2.5: 2.39 μg/m3
PM10: 2.49 μg/m3
Carbon Monoxide: 116.5 μg/m3
Nitrogen Dioxide: 5.48 μg/m3
Sulphur Dioxide: 0.55 μg/m3
Ozone: 65.75 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
58.2°F
52.2°F
55.3°F
89%
1.5 in
87%
0%
17.9 mph
2.1


Air Quality

AQI: 1 - Good
PM2.5: 2.85 μg/m3
PM10: 3.18 μg/m3
Carbon Monoxide: 126.5 μg/m3
Nitrogen Dioxide: 7.15 μg/m3
Sulphur Dioxide: 0.67 μg/m3
Ozone: 58.96 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
67.1°F
55°F
60.5°F
84%
0.03 in
58%
0%
12.5 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 1.28 μg/m3
PM10: 1.33 μg/m3
Carbon Monoxide: 111.58 μg/m3
Nitrogen Dioxide: 4.6 μg/m3
Sulphur Dioxide: 0.25 μg/m3
Ozone: 62.63 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
68.6°F
52.1°F
60.7°F
76%
0 in
17%
0%
13.9 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 1.58 μg/m3
PM10: 1.63 μg/m3
Carbon Monoxide: 126.75 μg/m3
Nitrogen Dioxide: 6.43 μg/m3
Sulphur Dioxide: 0.22 μg/m3
Ozone: 51.21 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

Saturday, June 20, 2026

Weather Forecast

Patchy rain nearby
70.6°F
53.4°F
61.2°F
82%
0.16 in
72%
0%
11.6 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 6.85 μg/m3
PM10: 7.01 μg/m3
Carbon Monoxide: 241.88 μg/m3
Nitrogen Dioxide: 34.85 μg/m3
Sulphur Dioxide: 0.44 μg/m3
Ozone: 6 μg/m3

Astronomical

Sunrise: 5:21 AM
Sun Transit: 12:58 AM
Sunset: 8:37 PM
Daylight: 15 hrs 16 mins
Moonrise: 11:46 AM
Moon Transit: 6:14 PM
Moonset: 12:10 AM
Moon Phase: Waxing Crescent
Moon Illumination: 27.8%

Best Times for Fishing or Hunting

Major Periods

5:28 AM - 7:58 AM
5:44 PM - 8:14 PM

Minor Periods

11:16 AM - 12:46 AM
12:00 AM - 12:00 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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