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

79°F
Mostly Clear
Mostly Clear
87%
S 5 mph
74°F

Weather Forecast

Mostly Clear
Overnight
74°F - Mostly Clear
Sunny
Friday
95°F - Sunny
Mostly Clear then Chance Showers And Thunderstorms
Friday Night
73°F - Mostly Clear then Chance Showers And Thunderstorms
Slight Chance Showers And Thunderstorms
Saturday
91°F - Slight Chance Showers And Thunderstorms
Partly Cloudy
Saturday Night
68°F - Partly Cloudy
Mostly Sunny
Sunday
85°F - Mostly Sunny
Mostly Clear
Sunday Night
63°F - Mostly Clear
Mostly Sunny
Labor Day
84°F - Mostly Sunny
Partly Cloudy
Monday Night
66°F - Partly Cloudy
Mostly Sunny then Slight Chance Rain Showers
Tuesday
90°F - Mostly Sunny then Slight Chance Rain Showers
Slight Chance Rain Showers
Tuesday Night
74°F - Slight Chance Rain Showers
Slight Chance Rain Showers
Wednesday
92°F - Slight Chance Rain Showers
Chance Rain Showers
Wednesday Night
71°F - Chance Rain Showers
Chance Rain Showers
Thursday
86°F - Chance Rain Showers

Astronomical

Sunrise: 6:24 AM
Sun Transit: 12:53 AM
Sunset: 7:22 PM
Daylight: 12 hrs 58 mins
Moonrise: 11:39 PM
Moon Transit: 6:48 AM
Moonset: 2:59 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:18 AM - 8:48 AM
7:01 PM - 9:31 PM

Minor Periods

12:00 AM - 12:00 AM
2:29 PM - 3:59 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: 6:24 AM
Sun Transit: 12:53 AM
Sunset: 7:22 PM
Daylight: 12 hrs 58 mins
Moonrise: 11:39 PM
Moon Transit: 6:48 AM
Moonset: 2:59 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:18 AM - 8:48 AM
7:01 PM - 9:31 PM

Minor Periods

12:00 AM - 12:00 AM
2:29 PM - 3:59 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: 6:24 AM
Sun Transit: 12:53 AM
Sunset: 7:22 PM
Daylight: 12 hrs 58 mins
Moonrise: 11:39 PM
Moon Transit: 6:48 AM
Moonset: 2:59 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:18 AM - 8:48 AM
7:01 PM - 9:31 PM

Minor Periods

12:00 AM - 12:00 AM
2:29 PM - 3:59 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: 6:24 AM
Sun Transit: 12:53 AM
Sunset: 7:22 PM
Daylight: 12 hrs 58 mins
Moonrise: 11:39 PM
Moon Transit: 6:48 AM
Moonset: 2:59 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:18 AM - 8:48 AM
7:01 PM - 9:31 PM

Minor Periods

12:00 AM - 12:00 AM
2:29 PM - 3:59 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: 6:25 AM
Sun Transit: 12:53 AM
Sunset: 7:20 PM
Daylight: 12 hrs 55 mins
Moonrise: 12:39 AM
Moon Transit: 7:51 AM
Moonset: 4:01 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:21 AM - 9:51 AM
8:04 PM - 10:34 PM

Minor Periods

3:31 PM - 5:01 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: 6:25 AM
Sun Transit: 12:53 AM
Sunset: 7:20 PM
Daylight: 12 hrs 55 mins
Moonrise: 12:39 AM
Moon Transit: 7:51 AM
Moonset: 4:01 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:21 AM - 9:51 AM
8:04 PM - 10:34 PM

Minor Periods

3:31 PM - 5:01 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: 6:26 AM
Sun Transit: 12:52 AM
Sunset: 7:19 PM
Daylight: 12 hrs 52 mins
Moonrise: 12:47 AM
Moon Transit: 8:53 AM
Moonset: 4:52 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:23 AM - 10:53 AM
9:05 PM - 11:35 PM

Minor Periods

4:22 PM - 5:52 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: 6:26 AM
Sun Transit: 12:52 AM
Sunset: 7:19 PM
Daylight: 12 hrs 52 mins
Moonrise: 12:47 AM
Moon Transit: 8:53 AM
Moonset: 4:52 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:23 AM - 10:53 AM
9:05 PM - 11:35 PM

Minor Periods

4:22 PM - 5:52 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: 6:27 AM
Sun Transit: 12:52 AM
Sunset: 7:17 PM
Daylight: 12 hrs 50 mins
Moonrise: 2:03 AM
Moon Transit: 9:53 AM
Moonset: 5:32 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:23 AM - 11:53 AM

Minor Periods

5:02 PM - 6:32 PM
1:33 AM - 3:03 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: 12:52 AM
Sunset: 7:17 PM
Daylight: 12 hrs 50 mins
Moonrise: 2:03 AM
Moon Transit: 9:53 AM
Moonset: 5:32 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:23 AM - 11:53 AM

Minor Periods

5:02 PM - 6:32 PM
1:33 AM - 3:03 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: 12:52 AM
Sunset: 7:15 PM
Daylight: 12 hrs 47 mins
Moonrise: 3:20 AM
Moon Transit: 10:49 AM
Moonset: 6:05 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:19 AM - 12:49 AM

Minor Periods

5:35 PM - 7:05 PM
2:50 AM - 4:20 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: 6:28 AM
Sun Transit: 12:52 AM
Sunset: 7:15 PM
Daylight: 12 hrs 47 mins
Moonrise: 3:20 AM
Moon Transit: 10:49 AM
Moonset: 6:05 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:19 AM - 12:49 AM

Minor Periods

5:35 PM - 7:05 PM
2:50 AM - 4:20 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: 6:29 AM
Sun Transit: 12:51 AM
Sunset: 7:14 PM
Daylight: 12 hrs 44 mins
Moonrise: 4:38 AM
Moon Transit: 11:41 AM
Moonset: 6:32 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

6:02 PM - 7:32 PM
4:08 AM - 5:38 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: 6:29 AM
Sun Transit: 12:51 AM
Sunset: 7:14 PM
Daylight: 12 hrs 44 mins
Moonrise: 4:38 AM
Moon Transit: 11:41 AM
Moonset: 6:32 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

6:02 PM - 7:32 PM
4:08 AM - 5:38 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: 12:51 AM
Sunset: 7:12 PM
Daylight: 12 hrs 42 mins
Moonrise: 5:51 AM
Moon Transit: 12:29 AM
Moonset: 6:55 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:59 AM - 2:29 PM

Minor Periods

6:25 PM - 7:55 PM
5:21 AM - 6:51 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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