Water Temperature of the Rock River in Byron, IL

Current Water Temperature

32.0°F

Measurement Time: Tuesday, October 6, 2026, 4:20 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

60.5°F
Clear
Conditions: Clear
Humidity: 64%
Feels Like: 54°F
Wind: SW 11 mph
Wind Gusts: 34.5 mph
Pressure: 29.88 in
Precipitation: 0 in
Cloud Cover: 5%
Visibility: 6 mi
UV Index: 0

Weather Forecast

Sunny
Tue
H: 71°F
L: 50°F
Sunny
Wed
H: 73°F
L: 55°F
Overcast
Thu
H: 67°F
L: 51°F
Overcast
Fri
H: 68°F
L: 52°F
Sunny
Sat
H: 82°F
L: 58°F

Air Quality

AQI: 1 - Good
PM2.5: 3.4 μg/m3
PM10: 3.4 μg/m3
Carbon Monoxide: 148 μg/m3
Nitrogen Dioxide: 5.1 μg/m3
Sulphur Dioxide: 2.8 μg/m3
Ozone: 88 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 12:45 AM
Sunset: 6:30 PM
Daylight: 11 hrs 30 mins
Moonrise: 2:24 AM
Moon Transit: 9:37 AM
Moonset: 4:38 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:07 AM - 11:37 AM

Minor Periods

4:08 PM - 5:38 PM
1:54 AM - 3:24 AM

Action Rating: 2 out of 5

Tuesday, October 6, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 59.1°F
Average Humidity: 67%
Chance of Rain: 5%
Wind: 17 mph
UV Index: 4.4

Air Quality

AQI: 1 - Good
PM2.5: 4.46 μg/m3
PM10: 4.49 μg/m3
Carbon Monoxide: 157.46 μg/m3
Nitrogen Dioxide: 8.73 μg/m3
Sulphur Dioxide: 2.52 μg/m3
Ozone: 69.46 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 12:45 AM
Sunset: 6:30 PM
Daylight: 11 hrs 30 mins
Moonrise: 2:24 AM
Moon Transit: 9:37 AM
Moonset: 4:38 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:07 AM - 11:37 AM

Minor Periods

4:08 PM - 5:38 PM
1:54 AM - 3:24 AM

Action Rating: 2 out of 5

Wednesday, October 7, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 61.9°F
Average Humidity: 71%
Chance of Rain: 7%
Wind: 11.4 mph
UV Index: 4.4

Air Quality

AQI: 1 - Good
PM2.5: 3.25 μg/m3
PM10: 3.34 μg/m3
Carbon Monoxide: 140.21 μg/m3
Nitrogen Dioxide: 5.67 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 59.42 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 12:44 AM
Sunset: 6:28 PM
Daylight: 11 hrs 28 mins
Moonrise: 3:37 AM
Moon Transit: 10:26 AM
Moonset: 5:01 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.2%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

4:31 PM - 6:01 PM
3:07 AM - 4:37 AM

Action Rating: 3 out of 5

Thursday, October 8, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 57.9°F
Average Humidity: 58%
Chance of Rain: 9%
Wind: 7.6 mph
UV Index: 4.3

Air Quality

AQI: 1 - Good
PM2.5: 3.83 μg/m3
PM10: 4.29 μg/m3
Carbon Monoxide: 145.08 μg/m3
Nitrogen Dioxide: 10.28 μg/m3
Sulphur Dioxide: 1.09 μg/m3
Ozone: 51.04 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 12:44 AM
Sunset: 6:27 PM
Daylight: 11 hrs 25 mins
Moonrise: 4:49 AM
Moon Transit: 11:11 AM
Moonset: 5:23 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:41 AM - 1:11 PM

Minor Periods

4:53 PM - 6:23 PM
4:19 AM - 5:49 AM

Action Rating: 3 out of 5

Friday, October 9, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 58.9°F
Average Humidity: 66%
Chance of Rain: 36%
Wind: 15 mph
UV Index: 2.6

Air Quality

AQI: 1 - Good
PM2.5: 7.88 μg/m3
PM10: 8.49 μg/m3
Carbon Monoxide: 179.13 μg/m3
Nitrogen Dioxide: 18.78 μg/m3
Sulphur Dioxide: 2.07 μg/m3
Ozone: 45.46 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 12:44 AM
Sunset: 6:25 PM
Daylight: 11 hrs 22 mins
Moonrise: 5:58 AM
Moon Transit: 11:56 AM
Moonset: 5:44 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:26 AM - 1:56 PM

Minor Periods

5:14 PM - 6:44 PM
5:28 AM - 6:58 AM

Action Rating: 4 out of 5

Saturday, October 10, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 67.8°F
Average Humidity: 65%
Chance of Rain: 5%
Wind: 13 mph
UV Index: 4.3

Air Quality

AQI: 1 - Good
PM2.5: 7.01 μg/m3
PM10: 7.37 μg/m3
Carbon Monoxide: 164.3 μg/m3
Nitrogen Dioxide: 5.13 μg/m3
Sulphur Dioxide: 1.81 μg/m3
Ozone: 91.54 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 12:43 AM
Sunset: 6:23 PM
Daylight: 11 hrs 19 mins
Moonrise: 7:07 AM
Moon Transit: 12:41 AM
Moonset: 6:06 PM
Moon Phase: New
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:11 AM - 2:41 PM

Minor Periods

5:36 PM - 7:06 PM
6:37 AM - 8:07 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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