Water Temperature of the Rock River in Byron, IL

Current Water Temperature

35.8°F

Measurement Time: Tuesday, March 17, 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

9°F
Sunny
Sunny
-4.4°F
11.5°F
63%
WNW 9.4 mph
13.8 mph
1.4°F
2°F
0 in
0%
9 mi
1022 mbar
1

Five Day Weather Forecast

Moderate snow
Tue
H: 26°F
L: 7°F
Moderate or heavy snow showers
Wed
H: 36°F
L: 23°F
Partly Cloudy
Thu
H: 59°F
L: 26°F
Fog
Fri
H: 43°F
L: 34°F
Mist
Sat
H: 68°F
L: 35°F

Air Quality

AQI: 1 - Good
PM2.5: 8.05 μg/m3
PM10: 8.55 μg/m3
Carbon Monoxide: 218.85 μg/m3
Nitrogen Dioxide: 2.75 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 90 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:00 AM
Sunset: 7:06 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:26 AM
Moon Transit: 12:01 AM
Moonset: 5:49 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:31 AM - 2:01 PM

Minor Periods

5:19 PM - 6:49 PM
5:56 AM - 7:26 AM

Action Rating: 5 out of 5

Tuesday, March 17, 2026

Weather Forecast

Moderate snow
26.4°F
6.6°F
17.9°F
68%
0.04 in
60%
4%
12.8 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 7.23 μg/m3
PM10: 7.8 μg/m3
Carbon Monoxide: 218.73 μg/m3
Nitrogen Dioxide: 4.05 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 86.2 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:00 AM
Sunset: 7:06 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:26 AM
Moon Transit: 12:01 AM
Moonset: 5:49 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:31 AM - 2:01 PM

Minor Periods

5:19 PM - 6:49 PM
5:56 AM - 7:26 AM

Action Rating: 5 out of 5

Wednesday, March 18, 2026

Weather Forecast

Moderate or heavy snow showers
36.1°F
23.4°F
29.2°F
90%
0.18 in
61%
11%
11 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 10.42 μg/m3
PM10: 11.23 μg/m3
Carbon Monoxide: 217.21 μg/m3
Nitrogen Dioxide: 5.65 μg/m3
Sulphur Dioxide: 1.78 μg/m3
Ozone: 91.36 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 12:00 AM
Sunset: 7:07 PM
Daylight: 12 hrs 3 mins
Moonrise: 6:47 AM
Moon Transit: 12:47 AM
Moonset: 7:01 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 2:30 AM
12:17 AM - 2:47 PM

Minor Periods

6:31 PM - 8:01 PM
6:17 AM - 7:47 AM

Action Rating: 3 out of 5

Thursday, March 19, 2026

Weather Forecast

Partly Cloudy
58.8°F
25.9°F
41.8°F
95%
0 in
0%
0%
6 mph
0.9


Air Quality

AQI: 2 - Moderate
PM2.5: 27.09 μg/m3
PM10: 27.87 μg/m3
Carbon Monoxide: 289.89 μg/m3
Nitrogen Dioxide: 10.99 μg/m3
Sulphur Dioxide: 1.9 μg/m3
Ozone: 105.88 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 12:00 AM
Sunset: 7:08 PM
Daylight: 12 hrs 6 mins
Moonrise: 7:09 AM
Moon Transit: 12:31 AM
Moonset: 8:15 PM
Moon Phase: New
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

12:01 AM - 2:31 AM
12:01 AM - 2:31 AM

Minor Periods

7:45 PM - 9:15 PM
6:39 AM - 8:09 AM

Action Rating: 4 out of 5

Friday, March 20, 2026

Weather Forecast

Fog
42.8°F
33.6°F
38.7°F
99%
0 in
0%
0%
10.5 mph
1.1


Air Quality

AQI: 2 - Moderate
PM2.5: 17.31 μg/m3
PM10: 17.69 μg/m3
Carbon Monoxide: 269.25 μg/m3
Nitrogen Dioxide: 10.47 μg/m3
Sulphur Dioxide: 4.99 μg/m3
Ozone: 74.88 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 9:27 AM
Sunset: 7:09 PM
Daylight: 12 hrs 9 mins
Moonrise: 7:32 AM
Moon Transit: 2:24 PM
Moonset: 9:31 PM
Moon Phase: New
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

1:35 AM - 4:05 AM
1:54 PM - 4:24 PM

Minor Periods

9:01 PM - 10:31 PM
7:02 AM - 8:32 AM

Action Rating: 4 out of 5

Saturday, March 21, 2026

Weather Forecast

Mist
68°F
34.7°F
48.1°F
87%
0 in
0%
0%
13.4 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 11.9 μg/m3
PM10: 12.22 μg/m3
Carbon Monoxide: 227.04 μg/m3
Nitrogen Dioxide: 13.03 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 44 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 1:04 PM
Sunset: 7:10 PM
Daylight: 12 hrs 12 mins
Moonrise: 7:58 AM
Moon Transit: 3:17 PM
Moonset: 10:51 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

2:26 AM - 4:56 AM
2:47 PM - 5:17 PM

Minor Periods

10:21 PM - 11:51 PM
7:28 AM - 8:58 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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