Water Temperature of the Rock River in Byron, IL

Current Water Temperature

43.5°F

Measurement Time: Friday, March 13, 2026, 6:15 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

30.9°F
Partly cloudy
Partly cloudy
24.9°F
31°F
61%
NNW 6 mph
9.7 mph
25.1°F
21.9°F
0 in
75%
9 mi
1020 mbar
0

Five Day Weather Forecast

Partly Cloudy
Sat
H: 45°F
L: 30°F
Heavy rain
Sun
H: 52°F
L: 25°F
Blowing snow
Mon
H: 22°F
L: 16°F
Moderate snow
Tue
H: 17°F
L: -1°F
Moderate or heavy snow showers
Wed
H: 33°F
L: 18°F

Air Quality

PM2.5: 4.05 μg/m3
PM10: 4.35 μg/m3
Carbon Monoxide: 185.85 μg/m3
Nitrogen Dioxide: 6.85 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 58 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 12:00 AM
Sunset: 7:03 PM
Daylight: 11 hrs 52 mins
Moonrise: 5:06 AM
Moon Transit: 9:38 AM
Moonset: 2:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:08 AM - 11:38 AM

Minor Periods

1:48 PM - 3:18 PM
4:36 AM - 6:06 AM

Action Rating: 2 out of 5

Winter Storm Watch issued March 13 at 3:01PM CDT until March 16 at 7:00PM CDT by NWS Quad Cities IA IL

Effective: Fri March 13, 2026, 3:01 PM
Expires: Fri March 13, 2026, 11:15 PM

* WHAT...Blizzard conditions possible. Total snow accumulations between 2 and 7 inches possible. Winds could gust as high as 55 mph. * WHERE...Portions of north central and northwest Illinois and east central and northeast Iowa. * WHEN...From Sunday evening through Monday evening. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Whiteout conditions are possible and may make travel treacherous and potentially life-threatening. Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage.

Prepare for possible blizzard conditions. Continue to monitor the latest forecasts for updates on this situation. Persons should consider delaying all travel. Motorists should use extreme caution if travel is absolutely necessary.


Winter Storm Watch issued March 13 at 2:04PM CDT until March 16 at 7:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Fri March 13, 2026, 2:04 PM
Expires: Fri March 13, 2026, 10:15 PM

...A PROLONGED WINTER WEATHER EVENT IS EXPECTED THROUGH THE LAST HALF OF THE WEEKEND AND THROUGH MONDAY... .A strong late winter storm system is expected to impact southern Wisconsin during the last half of the weekend in 3 phases: The first phase will run from Saturday night into Sunday morning and will feature a Winter Weather Advisory. During this time, snow accumulations of 1 to 3 inches are expected in the advisory area along with the potential for a up to a tenth of an inch of ice accumulation. The second phase is then expected from Sunday late morning into Sunday afternoon as warm air causes a transition to rain over a majority of southern Wisconsin. Thunderstorms may occur during this time. The last phase will then run from late Sunday afternoon through Monday as cold air then wraps back into the area and heavy banded snow moves in. Snowfall totals from 5 to 9 inches will result. A light glaze of ice may also occur, especially over central and east central Wisconsin. Wind gusts up to 45 mph will cause blowing snow and visibility restrictions. Hazardous travel is expected during both headline time frames. * WHAT...Heavy snow possible. Total snow accumulations between 4 and 7 inches possible. A light glaze of ice may occur. Winds could gust as high as 45 mph causing blowing snow and visibility restrictions. * WHERE...Portions of south central and southeast Wisconsin. * WHEN...From Sunday afternoon through Monday evening. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Gusty winds could bring down tree branches.

Monitor the latest forecasts for updates on this situation.


Saturday, March 14, 2026

Weather Forecast

Partly Cloudy
45.1°F
29.7°F
35.7°F
67%
0 in
0%
0%
15.7 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 3.97 μg/m3
PM10: 4.63 μg/m3
Carbon Monoxide: 187.45 μg/m3
Nitrogen Dioxide: 6.56 μg/m3
Sulphur Dioxide: 2.76 μg/m3
Ozone: 74.56 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 12:00 AM
Sunset: 7:03 PM
Daylight: 11 hrs 52 mins
Moonrise: 5:06 AM
Moon Transit: 9:38 AM
Moonset: 2:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:08 AM - 11:38 AM

Minor Periods

1:48 PM - 3:18 PM
4:36 AM - 6:06 AM

Action Rating: 2 out of 5

Sunday, March 15, 2026

Weather Forecast

Heavy rain
51.6°F
24.7°F
42°F
91%
1.73 in
88%
7%
32.2 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 7.8 μg/m3
PM10: 9.15 μg/m3
Carbon Monoxide: 207.77 μg/m3
Nitrogen Dioxide: 9.53 μg/m3
Sulphur Dioxide: 5.22 μg/m3
Ozone: 68.88 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 12:00 AM
Sunset: 7:04 PM
Daylight: 11 hrs 55 mins
Moonrise: 5:36 AM
Moon Transit: 10:27 AM
Moonset: 3:27 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:57 AM - 12:27 AM

Minor Periods

2:57 PM - 4:27 PM
5:06 AM - 6:36 AM

Action Rating: 2 out of 5

Monday, March 16, 2026

Weather Forecast

Blowing snow
22°F
16°F
21°F
84%
1.93 in
62%
45%
27.5 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 2.29 μg/m3
PM10: 2.67 μg/m3
Carbon Monoxide: 168.64 μg/m3
Nitrogen Dioxide: 2.71 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 91.36 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 12:00 AM
Sunset: 7:05 PM
Daylight: 11 hrs 58 mins
Moonrise: 6:03 AM
Moon Transit: 11:15 AM
Moonset: 4:38 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:45 AM - 1:15 PM

Minor Periods

4:08 PM - 5:38 PM
5:33 AM - 7:03 AM

Action Rating: 3 out of 5

Tuesday, March 17, 2026

Weather Forecast

Moderate snow
16.7°F
-0.5°F
10.8°F
86%
0.06 in
63%
18%
15.2 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.01 μg/m3
PM10: 3.3 μg/m3
Carbon Monoxide: 182.6 μg/m3
Nitrogen Dioxide: 3.51 μg/m3
Sulphur Dioxide: 1.22 μg/m3
Ozone: 87.31 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
33.3°F
18°F
26.8°F
94%
0.13 in
70%
26%
15 mph
1


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: 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

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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