Water Temperature of the Illinois River in Seneca, IL

Current Water Temperature

32.0°F

Measurement Time: Friday, January 23, 2026, 8:45 AM CST

Temperature Locations

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Illinois River

Station Name: Seneca
Data Source: USGS

Elevation Above Sea Level: 499 feet

Nearest Address:
Harbor Lane
Seneca, IL 61360
La Salle County

GPS Coordinates: 41.2997, -88.6142

Nearby Water Temperatures

Illinois River, Seneca, IL (0 mi)
Illinois River, Marseilles, IL (5.5 mi)
Hanson Gravel Pit, Morris, IL (8 mi)
Kankakee River, Morris, IL (19.3 mi)
Illinois River, Utica, IL (19.4 mi)
Des Plaines River, Channahon, IL (22.2 mi)
Kankakee River, Wilmington, IL (22.4 mi)
Kankakee River, Custer Park, IL (25.5 mi)
Des Plaines River, Rockdale, IL (29.7 mi)
Des Plaines River, Joliet, IL (32 mi)
Des Plaines River, Lockport, IL (33.4 mi)
Chicago Sanitary and Ship Canal, Romeoville, IL (37.2 mi)
Illinois River, Henry, IL (40.8 mi)
Cal-Sag Channel, Blue Island, IL (54.6 mi)
Plum Creek, Dyer, IN (59 mi)

Weather for Seneca, Illinois

Current Weather

-3.8°F
Clear
Clear
-22.2°F
5.9°F
42%
NNW 11.9 mph
15.5 mph
-8.5°F
-23.6°F
0 in
0%
9 mi
1041 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 7°F
L: -7°F
Overcast
Sat
H: 10°F
L: -6°F
Overcast
Sun
H: 23°F
L: 9°F
Sunny
Mon
H: 18°F
L: 2°F
Partly Cloudy
Tue
H: 30°F
L: 8°F

Air Quality

AQI: 1 - Good
PM2.5: 3.45 μg/m3
PM10: 3.65 μg/m3
Carbon Monoxide: 180.85 μg/m3
Nitrogen Dioxide: 6.65 μg/m3
Sulphur Dioxide: 2.15 μg/m3
Ozone: 54 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 12:06 AM
Sunset: 5:00 PM
Daylight: 9 hrs 47 mins
Moonrise: 9:36 AM
Moon Transit: 8:54 AM
Moonset: 10:27 PM
Moon Phase: Waxing Crescent
Moon Illumination: 24.4%

Best Times for Fishing or Hunting

Major Periods

8:24 AM - 10:54 AM
8:24 AM - 10:54 AM

Minor Periods

9:57 PM - 11:27 PM
9:06 AM - 10:36 AM

Action Rating: 2 out of 5

Cold Weather Advisory issued January 23 at 3:01AM CST until January 24 at 9:00AM CST by NWS Chicago IL

Effective: Fri January 23, 2026, 3:01 AM
Expires: Fri January 23, 2026, 1:15 PM

* WHAT...For the Extreme Cold Warning, dangerously cold wind chills of 30 to 40 below zero expected. For the Cold Weather Advisory, bitterly cold wind chills of 15 to 30 below zero expected. * WHERE...Portions of central, north central, and northeast Illinois. * WHEN...For the Extreme Cold Warning, until noon CST today. For the Cold Weather Advisory, from noon today to 9 AM CST Saturday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as few as 10 minutes. * ADDITIONAL DETAILS...Coldest wind chills are expected across interior portions of northern Illinois.

Limit time outdoors. If you must go outdoors, dress in multiple layers including a hat, face mask, and gloves. To prevent water pipes from freezing, wrap, drain, or allow them to drip slowly. Make frequent checks on older family, friends, and neighbors. Keep pets indoors as much as possible. Ensure portable heaters are used correctly. Do not use generators or grills inside.


Extreme Cold Warning issued January 23 at 3:01AM CST until January 23 at 12:00PM CST by NWS Chicago IL

Effective: Fri January 23, 2026, 3:01 AM
Expires: Fri January 23, 2026, 1:15 PM

* WHAT...For the Extreme Cold Warning, dangerously cold wind chills of 30 to 40 below zero expected. For the Cold Weather Advisory, bitterly cold wind chills of 15 to 30 below zero expected. * WHERE...Portions of central, north central, and northeast Illinois. * WHEN...For the Extreme Cold Warning, until noon CST today. For the Cold Weather Advisory, from noon today to 9 AM CST Saturday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as few as 10 minutes. * ADDITIONAL DETAILS...Coldest wind chills are expected across interior portions of northern Illinois.

Limit time outdoors. If you must go outdoors, dress in multiple layers including a hat, face mask, and gloves. To prevent water pipes from freezing, wrap, drain, or allow them to drip slowly. Make frequent checks on older family, friends, and neighbors. Keep pets indoors as much as possible. Ensure portable heaters are used correctly. Do not use generators or grills inside.


Cold Weather Advisory issued January 23 at 12:04PM CST until January 24 at 9:00AM CST by NWS Chicago IL

Effective: Fri January 23, 2026, 12:04 PM
Expires: Fri January 23, 2026, 10:15 PM

* WHAT...Very cold wind chills as low as 15 to 30 below expected. * WHERE...Portions of central, north central, and northeast Illinois. * WHEN...Until 9 AM CST Saturday. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 10 to 30 minutes.

Dress in layers including a hat, face mask, and gloves if you must go outside. To prevent water pipes from freezing; wrap or drain or allow them to drip slowly. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors.


Flood Warning issued January 23 at 9:03AM CST by NWS Chicago IL

Effective: Fri January 23, 2026, 9:03 AM
Expires: Sat January 24, 2026, 3:15 AM

...The Flood Warning continues for the following rivers in Illinois... Kankakee River at Momence affecting Kankakee County. For the Kankakee River...including Momence...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Kankakee River from IL/IN state line downstream to confluence with Iroquois River at Aroma Park, including the Momence gauge. * WHEN...From this morning until further notice. * IMPACTS... Localized flooding of wetlands, forest land, agricultural land, and some roadways may occur along the river. * ADDITIONAL DETAILS... - At 7:45 AM CST Friday the stage was 4.7 feet. The indicated stage was affected by an ice jam located downstream of the gauge. - Forecast...The river is expected to remain near flood stage while the ice jam is in place, with local water level fluctuations possible. - Flood stage is 5.0 feet. - http://www.weather.gov/safety/flood

An ice jam is affecting water levels in this area. River forecasts during ice jams are less certain due to many complicated factors. Significant river ice cover can cause large water level fluctuations and flooding with little advanced notice. River ice may also cause gauge observations to be inaccurate. Additional information is available at www.weather.gov. The next statement will be issued by late tonight.


Cold Weather Advisory issued January 23 at 3:01AM CST until January 24 at 9:00AM CST by NWS Chicago IL

Effective: Fri January 23, 2026, 3:01 AM
Expires: Fri January 23, 2026, 1:15 PM

* WHAT...For the Extreme Cold Warning, dangerously cold wind chills of 30 to 35 below zero expected. For the Cold Weather Advisory, bitterly cold wind chills of 15 to 30 below zero expected. * WHERE...Central Cook County. * WHEN...For the Extreme Cold Warning, until noon CST today. For the Cold Weather Advisory, from noon today to 9 AM CST Saturday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as few as 10 minutes.

Limit time outdoors. If you must go outdoors, dress in multiple layers including a hat, face mask, and gloves. To prevent water pipes from freezing, wrap, drain, or allow them to drip slowly. Make frequent checks on older family, friends, and neighbors. Keep pets indoors as much as possible. Ensure portable heaters are used correctly. Do not use generators or grills inside.


Extreme Cold Warning issued January 23 at 3:01AM CST until January 23 at 12:00PM CST by NWS Chicago IL

Effective: Fri January 23, 2026, 3:01 AM
Expires: Fri January 23, 2026, 1:15 PM

* WHAT...For the Extreme Cold Warning, dangerously cold wind chills of 30 to 35 below zero expected. For the Cold Weather Advisory, bitterly cold wind chills of 15 to 30 below zero expected. * WHERE...Central Cook County. * WHEN...For the Extreme Cold Warning, until noon CST today. For the Cold Weather Advisory, from noon today to 9 AM CST Saturday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as few as 10 minutes.

Limit time outdoors. If you must go outdoors, dress in multiple layers including a hat, face mask, and gloves. To prevent water pipes from freezing, wrap, drain, or allow them to drip slowly. Make frequent checks on older family, friends, and neighbors. Keep pets indoors as much as possible. Ensure portable heaters are used correctly. Do not use generators or grills inside.


Cold Weather Advisory issued January 23 at 12:04PM CST until January 24 at 9:00AM CST by NWS Chicago IL

Effective: Fri January 23, 2026, 12:04 PM
Expires: Fri January 23, 2026, 10:15 PM

* WHAT...Very cold wind chills as low as 15 to 30 below expected. * WHERE...Central Cook County. * WHEN...Until 9 AM CST Saturday. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 10 to 30 minutes.

Dress in layers including a hat, face mask, and gloves if you must go outside. Residents of the city of Chicago can call 3 1 1 to request well being checks for elderly friends or family members, or for information on finding the nearest warming center. To prevent water pipes from freezing; wrap or drain or allow them to drip slowly. Keep pets indoors as much as possible.


Cold Weather Advisory issued January 23 at 11:52AM CST until January 24 at 12:00PM CST by NWS Quad Cities IA IL

Effective: Fri January 23, 2026, 11:52 AM
Expires: Fri January 23, 2026, 8:00 PM

* WHAT...Very cold wind chills as low as 30 below expected. * WHERE...Portions of eastern Iowa, northwest Illinois, and northeast Missouri. * WHEN...Until noon CST Saturday. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. * ADDITIONAL DETAILS...Some sporadic wind chills below 30 below may still occur along and north of Hwy 20 this afternoon and late evening.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.


Friday, January 23, 2026

Weather Forecast

Sunny
7°F
-6.5°F
1.4°F
34%
0 in
0%
0%
18.6 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 2.55 μg/m3
PM10: 2.85 μg/m3
Carbon Monoxide: 162.33 μg/m3
Nitrogen Dioxide: 3.39 μg/m3
Sulphur Dioxide: 1.72 μg/m3
Ozone: 66.68 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 12:06 AM
Sunset: 5:00 PM
Daylight: 9 hrs 47 mins
Moonrise: 9:36 AM
Moon Transit: 8:54 AM
Moonset: 10:27 PM
Moon Phase: Waxing Crescent
Moon Illumination: 24.4%

Best Times for Fishing or Hunting

Major Periods

8:24 AM - 10:54 AM
8:24 AM - 10:54 AM

Minor Periods

9:57 PM - 11:27 PM
9:06 AM - 10:36 AM

Action Rating: 2 out of 5

Saturday, January 24, 2026

Weather Forecast

Overcast
9.7°F
-5.6°F
2.8°F
50%
0 in
0%
4%
8.5 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 4.27 μg/m3
PM10: 4.49 μg/m3
Carbon Monoxide: 202.09 μg/m3
Nitrogen Dioxide: 8.59 μg/m3
Sulphur Dioxide: 3.77 μg/m3
Ozone: 51.48 μg/m3

Astronomical

Sunrise: 7:12 AM
Sun Transit: 12:06 AM
Sunset: 5:01 PM
Daylight: 9 hrs 49 mins
Moonrise: 9:59 AM
Moon Transit: 4:41 PM
Moonset: 11:38 PM
Moon Phase: First Quarter
Moon Illumination: 34.7%

Best Times for Fishing or Hunting

Major Periods

3:59 AM - 6:29 AM
4:11 PM - 6:41 PM

Minor Periods

12:00 AM - 12:00 AM
9:29 AM - 10:59 AM

Action Rating: 2 out of 5

Sunday, January 25, 2026

Weather Forecast

Overcast
22.5°F
8.6°F
13.8°F
78%
0 in
0%
0%
13.2 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 10.69 μg/m3
PM10: 10.98 μg/m3
Carbon Monoxide: 228.69 μg/m3
Nitrogen Dioxide: 20.51 μg/m3
Sulphur Dioxide: 5.97 μg/m3
Ozone: 42.92 μg/m3

Astronomical

Sunrise: 7:12 AM
Sun Transit: 12:06 AM
Sunset: 5:02 PM
Daylight: 9 hrs 51 mins
Moonrise: 10:24 AM
Moon Transit: 5:31 PM
Moonset: 12:38 AM
Moon Phase: First Quarter
Moon Illumination: 45.8%

Best Times for Fishing or Hunting

Major Periods

4:47 AM - 7:17 AM
5:01 PM - 7:31 PM

Minor Periods

9:54 AM - 11:24 AM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Monday, January 26, 2026

Weather Forecast

Sunny
17.8°F
1.9°F
8.9°F
56%
0 in
0%
0%
16.3 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 10.72 μg/m3
PM10: 10.97 μg/m3
Carbon Monoxide: 195.52 μg/m3
Nitrogen Dioxide: 10.07 μg/m3
Sulphur Dioxide: 1.82 μg/m3
Ozone: 57.04 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:07 AM
Sunset: 5:03 PM
Daylight: 9 hrs 53 mins
Moonrise: 10:53 AM
Moon Transit: 6:24 PM
Moonset: 12:53 AM
Moon Phase: First Quarter
Moon Illumination: 57.1%

Best Times for Fishing or Hunting

Major Periods

5:38 AM - 8:08 AM
5:54 PM - 8:24 PM

Minor Periods

10:23 AM - 11:53 AM
12:23 AM - 1:53 AM

Action Rating: 2 out of 5

Tuesday, January 27, 2026

Weather Forecast

Partly Cloudy
29.9°F
7.9°F
17.7°F
65%
0 in
0%
0%
18.6 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 12.9 μg/m3
PM10: 13.06 μg/m3
Carbon Monoxide: 225.72 μg/m3
Nitrogen Dioxide: 9.5 μg/m3
Sulphur Dioxide: 1.7 μg/m3
Ozone: 59.92 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 12:07 AM
Sunset: 5:05 PM
Daylight: 9 hrs 55 mins
Moonrise: 11:30 AM
Moon Transit: 7:23 PM
Moonset: 2:10 AM
Moon Phase: First Quarter
Moon Illumination: 68.0%

Best Times for Fishing or Hunting

Major Periods

6:34 AM - 9:04 AM
6:53 PM - 9:23 PM

Minor Periods

11:00 AM - 12:30 AM
1:40 AM - 3:10 AM

Action Rating: 2 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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