Water Temperature of the Rock River in Byron, IL

Current Water Temperature

50.2°F

Measurement Time: Thursday, April 2, 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

41.4°F
Light rain
Light rain
34.2°F
41.8°F
96%
ESE 13 mph
20.3 mph
35.5°F
40.7°F
0.01 in
100%
1 mi
1010 mbar
0.1

Five Day Weather Forecast

Heavy rain
Thu
H: 68°F
L: 37°F
Patchy rain nearby
Fri
H: 62°F
L: 40°F
Moderate rain
Sat
H: 58°F
L: 42°F
Partly Cloudy
Sun
H: 54°F
L: 34°F
Partly Cloudy
Mon
H: 49°F
L: 32°F

Air Quality

AQI: 1 - Good
PM2.5: 5.45 μg/m3
PM10: 6.05 μg/m3
Carbon Monoxide: 139.85 μg/m3
Nitrogen Dioxide: 2.95 μg/m3
Sulphur Dioxide: 1.75 μg/m3
Ozone: 79 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 1:00 PM
Sunset: 7:24 PM
Daylight: 12 hrs 46 mins
Moonrise: 8:25 PM
Moon Transit: 1:02 AM
Moonset: 6:36 AM
Moon Phase: Full
Moon Illumination: 99.5%

Best Times for Fishing or Hunting

Major Periods

12:32 AM - 3:02 AM
1:00 PM - 3:30 PM

Minor Periods

7:55 PM - 9:25 PM
6:06 AM - 7:36 AM

Action Rating: 3 out of 5

Wind Advisory issued April 2 at 1:36AM CDT until April 2 at 7:00PM CDT by NWS Chicago IL

Effective: Thu April 2, 2026, 1:36 AM
Expires: Thu April 2, 2026, 11:45 AM

* WHAT...South winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Portions of north central and northeast Illinois. * WHEN...From 1 PM this afternoon to 7 PM CDT this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.


Wind Advisory issued April 2 at 2:50AM CDT until April 2 at 7:00PM CDT by NWS Quad Cities IA IL

Effective: Thu April 2, 2026, 2:50 AM
Expires: Thu April 2, 2026, 11:00 AM

* WHAT...South winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Portions of north central, northwest, and west central Illinois, east central and southeast Iowa, and northeast Missouri. * WHEN...From 1 PM this afternoon to 7 PM CDT this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.
Thursday, April 2, 2026

Weather Forecast

Heavy rain
68.4°F
36.5°F
51.3°F
93%
1.69 in
89%
0%
33.1 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 4.85 μg/m3
PM10: 5.08 μg/m3
Carbon Monoxide: 178.65 μg/m3
Nitrogen Dioxide: 6.65 μg/m3
Sulphur Dioxide: 2.41 μg/m3
Ozone: 68.56 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 1:00 PM
Sunset: 7:24 PM
Daylight: 12 hrs 46 mins
Moonrise: 8:25 PM
Moon Transit: 1:02 AM
Moonset: 6:36 AM
Moon Phase: Full
Moon Illumination: 99.5%

Best Times for Fishing or Hunting

Major Periods

12:32 AM - 3:02 AM
1:00 PM - 3:30 PM

Minor Periods

7:55 PM - 9:25 PM
6:06 AM - 7:36 AM

Action Rating: 3 out of 5

Friday, April 3, 2026

Weather Forecast

Patchy rain nearby
61.9°F
40.1°F
49.7°F
81%
0.06 in
84%
0%
18.1 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 4.34 μg/m3
PM10: 4.55 μg/m3
Carbon Monoxide: 166.81 μg/m3
Nitrogen Dioxide: 4.05 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 65.92 μg/m3

Astronomical

Sunrise: 6:36 AM
Sun Transit: 1:00 PM
Sunset: 7:25 PM
Daylight: 12 hrs 49 mins
Moonrise: 9:31 PM
Moon Transit: 1:45 AM
Moonset: 6:57 AM
Moon Phase: Full
Moon Illumination: 96.6%

Best Times for Fishing or Hunting

Major Periods

1:15 AM - 3:45 AM
1:43 PM - 4:13 PM

Minor Periods

9:01 PM - 10:31 PM
6:27 AM - 7:57 AM

Action Rating: 4 out of 5

Saturday, April 4, 2026

Weather Forecast

Moderate rain
57.9°F
41.9°F
49.6°F
81%
0.34 in
86%
0%
22.1 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 5.53 μg/m3
PM10: 5.61 μg/m3
Carbon Monoxide: 163.97 μg/m3
Nitrogen Dioxide: 6.82 μg/m3
Sulphur Dioxide: 2.17 μg/m3
Ozone: 65.12 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 12:00 AM
Sunset: 7:26 PM
Daylight: 12 hrs 51 mins
Moonrise: 10:37 PM
Moon Transit: 2:30 AM
Moonset: 7:21 AM
Moon Phase: Full
Moon Illumination: 91.3%

Best Times for Fishing or Hunting

Major Periods

2:00 AM - 4:30 AM
2:30 PM - 5:00 PM

Minor Periods

10:07 PM - 11:37 PM
6:51 AM - 8:21 AM

Action Rating: 4 out of 5

Sunday, April 5, 2026

Weather Forecast

Partly Cloudy
53.6°F
33.8°F
41.7°F
67%
0 in
0%
0%
17.7 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 1.97 μg/m3
PM10: 2.13 μg/m3
Carbon Monoxide: 149.76 μg/m3
Nitrogen Dioxide: 2.05 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 94.52 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 12:00 AM
Sunset: 7:27 PM
Daylight: 12 hrs 54 mins
Moonrise: 11:41 PM
Moon Transit: 3:16 AM
Moonset: 7:51 AM
Moon Phase: Waning Gibbous
Moon Illumination: 83.9%

Best Times for Fishing or Hunting

Major Periods

2:46 AM - 5:16 AM
3:16 PM - 5:46 PM

Minor Periods

12:00 AM - 12:00 AM
7:21 AM - 8:51 AM

Action Rating: 2 out of 5

Monday, April 6, 2026

Weather Forecast

Partly Cloudy
48.9°F
31.7°F
40.4°F
58%
0 in
0%
0%
19.7 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 6.14 μg/m3
PM10: 6.89 μg/m3
Carbon Monoxide: 162.86 μg/m3
Nitrogen Dioxide: 6.28 μg/m3
Sulphur Dioxide: 1.92 μg/m3
Ozone: 66.15 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 1:00 PM
Sunset: 7:28 PM
Daylight: 12 hrs 57 mins
Moonrise: 12:41 AM
Moon Transit: 4:05 AM
Moonset: 8:26 AM
Moon Phase: Waning Gibbous
Moon Illumination: 74.7%

Best Times for Fishing or Hunting

Major Periods

3:35 AM - 6:05 AM
4:06 PM - 6:36 PM

Minor Periods

7:56 AM - 9:26 AM
12:00 AM - 12:00 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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