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

57°F
Mostly Cloudy
Mostly Cloudy
83%
ENE 10 mph
52°F

Weather Forecast

Mostly Cloudy
Overnight
56°F - Mostly Cloudy
Slight Chance Rain Showers
Tuesday
65°F - Slight Chance Rain Showers
Slight Chance Rain Showers then Mostly Cloudy
Tuesday Night
55°F - Slight Chance Rain Showers then Mostly Cloudy
Mostly Cloudy
Wednesday
68°F - Mostly Cloudy
Mostly Cloudy
Wednesday Night
55°F - Mostly Cloudy
Mostly Cloudy
Thursday
70°F - Mostly Cloudy
Mostly Cloudy
Thursday Night
54°F - Mostly Cloudy
Mostly Sunny
Friday
70°F - Mostly Sunny
Partly Cloudy
Friday Night
49°F - Partly Cloudy
Partly Sunny
Saturday
69°F - Partly Sunny
Mostly Cloudy
Saturday Night
53°F - Mostly Cloudy
Partly Sunny
Sunday
73°F - Partly Sunny
Partly Cloudy
Sunday Night
56°F - Partly Cloudy
Mostly Sunny
Monday
77°F - Mostly Sunny

Astronomical

Sunrise: 6:42 AM
Sun Transit: 12:47 AM
Sunset: 6:52 PM
Daylight: 12 hrs 9 mins
Moonrise: 5:03 PM
Moon Transit: 10:06 PM
Moonset: 2:13 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

9:25 AM - 11:55 AM
12:00 AM - 12:00 AM

Minor Periods

4:33 PM - 6:03 PM
1:43 AM - 3:13 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: 6:42 AM
Sun Transit: 12:47 AM
Sunset: 6:52 PM
Daylight: 12 hrs 9 mins
Moonrise: 5:03 PM
Moon Transit: 10:06 PM
Moonset: 2:13 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

9:25 AM - 11:55 AM
12:00 AM - 12:00 AM

Minor Periods

4:33 PM - 6:03 PM
1:43 AM - 3:13 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: 6:42 AM
Sun Transit: 12:47 AM
Sunset: 6:52 PM
Daylight: 12 hrs 9 mins
Moonrise: 5:03 PM
Moon Transit: 10:06 PM
Moonset: 2:13 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

9:25 AM - 11:55 AM
12:00 AM - 12:00 AM

Minor Periods

4:33 PM - 6:03 PM
1:43 AM - 3:13 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: 6:42 AM
Sun Transit: 12:47 AM
Sunset: 6:52 PM
Daylight: 12 hrs 9 mins
Moonrise: 5:03 PM
Moon Transit: 10:06 PM
Moonset: 2:13 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

9:25 AM - 11:55 AM
12:00 AM - 12:00 AM

Minor Periods

4:33 PM - 6:03 PM
1:43 AM - 3:13 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: 6:43 AM
Sun Transit: 12:46 AM
Sunset: 6:50 PM
Daylight: 12 hrs 7 mins
Moonrise: 5:28 PM
Moon Transit: 10:51 PM
Moonset: 3:18 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

10:10 AM - 12:40 AM
12:00 AM - 12:00 AM

Minor Periods

4:58 PM - 6:28 PM
2:48 AM - 4:18 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: 6:43 AM
Sun Transit: 12:46 AM
Sunset: 6:50 PM
Daylight: 12 hrs 7 mins
Moonrise: 5:28 PM
Moon Transit: 10:51 PM
Moonset: 3:18 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

10:10 AM - 12:40 AM
12:00 AM - 12:00 AM

Minor Periods

4:58 PM - 6:28 PM
2:48 AM - 4:18 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: 6:44 AM
Sun Transit: 12:46 AM
Sunset: 6:48 PM
Daylight: 12 hrs 4 mins
Moonrise: 5:50 PM
Moon Transit: 11:35 PM
Moonset: 4:25 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

10:55 AM - 1:25 PM
12:00 AM - 12:00 AM

Minor Periods

5:20 PM - 6:50 PM
3:55 AM - 5:25 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: 6:44 AM
Sun Transit: 12:46 AM
Sunset: 6:48 PM
Daylight: 12 hrs 4 mins
Moonrise: 5:50 PM
Moon Transit: 11:35 PM
Moonset: 4:25 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

10:55 AM - 1:25 PM
12:00 AM - 12:00 AM

Minor Periods

5:20 PM - 6:50 PM
3:55 AM - 5:25 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: 6:45 AM
Sun Transit: 12:46 AM
Sunset: 6:47 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:12 PM
Moon Transit: 12:00 AM
Moonset: 5:32 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

5:42 PM - 7:12 PM
5:02 AM - 6:32 AM

Action Rating: 5 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: 6:45 AM
Sun Transit: 12:46 AM
Sunset: 6:47 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:12 PM
Moon Transit: 12:00 AM
Moonset: 5:32 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

5:42 PM - 7:12 PM
5:02 AM - 6:32 AM

Action Rating: 5 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: 6:46 AM
Sun Transit: 12:45 AM
Sunset: 6:45 PM
Daylight: 11 hrs 58 mins
Moonrise: 6:34 PM
Moon Transit: 7:33 AM
Moonset: 6:41 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

7:03 AM - 9:33 AM
7:03 AM - 9:33 AM

Minor Periods

6:04 PM - 7:34 PM
6:11 AM - 7:41 AM

Action Rating: 5 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: 6:46 AM
Sun Transit: 12:45 AM
Sunset: 6:45 PM
Daylight: 11 hrs 58 mins
Moonrise: 6:34 PM
Moon Transit: 7:33 AM
Moonset: 6:41 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

7:03 AM - 9:33 AM
7:03 AM - 9:33 AM

Minor Periods

6:04 PM - 7:34 PM
6:11 AM - 7:41 AM

Action Rating: 5 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: 6:47 AM
Sun Transit: 12:45 AM
Sunset: 6:43 PM
Daylight: 11 hrs 56 mins
Moonrise: 6:57 PM
Moon Transit: 1:05 AM
Moonset: 7:51 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:35 AM - 3:05 AM
1:10 PM - 3:40 PM

Minor Periods

6:27 PM - 7:57 PM
7:21 AM - 8:51 AM

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: 6:47 AM
Sun Transit: 12:45 AM
Sunset: 6:43 PM
Daylight: 11 hrs 56 mins
Moonrise: 6:57 PM
Moon Transit: 1:05 AM
Moonset: 7:51 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:35 AM - 3:05 AM
1:10 PM - 3:40 PM

Minor Periods

6:27 PM - 7:57 PM
7:21 AM - 8:51 AM

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: 6:48 AM
Sun Transit: 12:45 AM
Sunset: 6:41 PM
Daylight: 11 hrs 53 mins
Moonrise: 7:25 PM
Moon Transit: 1:54 AM
Moonset: 9:04 AM
Moon Phase: Full
Moon Illumination: 92.4%

Best Times for Fishing or Hunting

Major Periods

1:24 AM - 3:54 AM
2:01 PM - 4:31 PM

Minor Periods

6:55 PM - 8:25 PM
8:34 AM - 10:04 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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