Water Temperature of the Rock River in Byron, IL

Current Water Temperature

80.2°F

Measurement Time: Wednesday, September 2, 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

77°F
Slight Chance Showers And Thunderstorms
Slight Chance Showers And Thunderstorms
85%
SW 5 mph
72°F

Weather Forecast

Slight Chance Showers And Thunderstorms
Overnight
74°F - Slight Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Thursday
94°F - Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Thursday Night
72°F - Chance Showers And Thunderstorms
Chance Showers And Thunderstorms then Mostly Sunny
Friday
92°F - Chance Showers And Thunderstorms then Mostly Sunny
Chance Showers And Thunderstorms
Friday Night
72°F - Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Saturday
85°F - Chance Showers And Thunderstorms
Partly Cloudy
Saturday Night
65°F - Partly Cloudy
Mostly Sunny
Sunday
80°F - Mostly Sunny
Partly Cloudy
Sunday Night
61°F - Partly Cloudy
Mostly Sunny
Labor Day
82°F - Mostly Sunny
Partly Cloudy
Monday Night
63°F - Partly Cloudy
Mostly Sunny
Tuesday
86°F - Mostly Sunny
Chance Rain Showers
Tuesday Night
69°F - Chance Rain Showers
Chance Rain Showers
Wednesday
85°F - Chance Rain Showers

Astronomical

Sunrise: 6:25 AM
Sun Transit: 12:56 AM
Sunset: 7:27 PM
Daylight: 13 hrs 2 mins
Moonrise: 10:42 PM
Moon Transit: 5:50 AM
Moonset: 1:54 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:20 AM - 7:50 AM
5:56 PM - 8:26 PM

Minor Periods

10:12 PM - 11:42 PM
1:24 PM - 2:54 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 12:56 AM
Sunset: 7:27 PM
Daylight: 13 hrs 2 mins
Moonrise: 10:42 PM
Moon Transit: 5:50 AM
Moonset: 1:54 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:20 AM - 7:50 AM
5:56 PM - 8:26 PM

Minor Periods

10:12 PM - 11:42 PM
1:24 PM - 2:54 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 12:56 AM
Sunset: 7:27 PM
Daylight: 13 hrs 2 mins
Moonrise: 10:42 PM
Moon Transit: 5:50 AM
Moonset: 1:54 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:20 AM - 7:50 AM
5:56 PM - 8:26 PM

Minor Periods

10:12 PM - 11:42 PM
1:24 PM - 2:54 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 12:56 AM
Sunset: 7:27 PM
Daylight: 13 hrs 2 mins
Moonrise: 10:42 PM
Moon Transit: 5:50 AM
Moonset: 1:54 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:20 AM - 7:50 AM
5:56 PM - 8:26 PM

Minor Periods

10:12 PM - 11:42 PM
1:24 PM - 2:54 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 12:55 AM
Sunset: 7:25 PM
Daylight: 12 hrs 59 mins
Moonrise: 11:38 PM
Moon Transit: 6:51 AM
Moonset: 3:05 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:21 AM - 8:51 AM
6:58 PM - 9:28 PM

Minor Periods

12:00 AM - 12:00 AM
2:35 PM - 4:05 PM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 12:55 AM
Sunset: 7:25 PM
Daylight: 12 hrs 59 mins
Moonrise: 11:38 PM
Moon Transit: 6:51 AM
Moonset: 3:05 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:21 AM - 8:51 AM
6:58 PM - 9:28 PM

Minor Periods

12:00 AM - 12:00 AM
2:35 PM - 4:05 PM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 12:55 AM
Sunset: 7:24 PM
Daylight: 12 hrs 57 mins
Moonrise: 12:38 AM
Moon Transit: 7:53 AM
Moonset: 4:07 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:23 AM - 9:53 AM
8:01 PM - 10:31 PM

Minor Periods

3:37 PM - 5:07 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 12:55 AM
Sunset: 7:24 PM
Daylight: 12 hrs 57 mins
Moonrise: 12:38 AM
Moon Transit: 7:53 AM
Moonset: 4:07 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:23 AM - 9:53 AM
8:01 PM - 10:31 PM

Minor Periods

3:37 PM - 5:07 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 12:55 AM
Sunset: 7:22 PM
Daylight: 12 hrs 54 mins
Moonrise: 12:47 AM
Moon Transit: 8:56 AM
Moonset: 4:58 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:26 AM - 10:56 AM
9:03 PM - 11:33 PM

Minor Periods

4:28 PM - 5:58 PM
12:17 AM - 1:47 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 12:55 AM
Sunset: 7:22 PM
Daylight: 12 hrs 54 mins
Moonrise: 12:47 AM
Moon Transit: 8:56 AM
Moonset: 4:58 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:26 AM - 10:56 AM
9:03 PM - 11:33 PM

Minor Periods

4:28 PM - 5:58 PM
12:17 AM - 1:47 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:29 AM
Sun Transit: 12:54 AM
Sunset: 7:20 PM
Daylight: 12 hrs 51 mins
Moonrise: 2:02 AM
Moon Transit: 9:56 AM
Moonset: 5:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:26 AM - 11:56 AM

Minor Periods

5:07 PM - 6:37 PM
1:32 AM - 3:02 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:29 AM
Sun Transit: 12:54 AM
Sunset: 7:20 PM
Daylight: 12 hrs 51 mins
Moonrise: 2:02 AM
Moon Transit: 9:56 AM
Moonset: 5:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:26 AM - 11:56 AM

Minor Periods

5:07 PM - 6:37 PM
1:32 AM - 3:02 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 12:54 AM
Sunset: 7:18 PM
Daylight: 12 hrs 48 mins
Moonrise: 3:21 AM
Moon Transit: 10:52 AM
Moonset: 6:09 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:22 AM - 12:52 AM

Minor Periods

5:39 PM - 7:09 PM
2:51 AM - 4:21 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 12:54 AM
Sunset: 7:18 PM
Daylight: 12 hrs 48 mins
Moonrise: 3:21 AM
Moon Transit: 10:52 AM
Moonset: 6:09 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:22 AM - 12:52 AM

Minor Periods

5:39 PM - 7:09 PM
2:51 AM - 4:21 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 12:54 AM
Sunset: 7:17 PM
Daylight: 12 hrs 45 mins
Moonrise: 4:39 AM
Moon Transit: 11:44 AM
Moonset: 6:36 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:14 AM - 1:44 PM

Minor Periods

6:06 PM - 7:36 PM
4:09 AM - 5:39 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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