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

64°F
Partly Cloudy
Partly Cloudy
88%
ENE 5 mph
60°F

Weather Forecast

Partly Cloudy
Overnight
60°F - Partly Cloudy
Mostly Sunny
Labor Day
81°F - Mostly Sunny
Partly Cloudy
Monday Night
62°F - Partly Cloudy
Mostly Sunny
Tuesday
88°F - Mostly Sunny
Partly Cloudy then Chance Rain Showers
Tuesday Night
73°F - Partly Cloudy then Chance Rain Showers
Showers And Thunderstorms Likely
Wednesday
87°F - Showers And Thunderstorms Likely
Partly Cloudy
Wednesday Night
63°F - Partly Cloudy
Mostly Sunny
Thursday
80°F - Mostly Sunny
Mostly Clear
Thursday Night
58°F - Mostly Clear
Sunny
Friday
83°F - Sunny
Mostly Clear then Chance Rain Showers
Friday Night
64°F - Mostly Clear then Chance Rain Showers
Chance Rain Showers then Slight Chance Showers And Thunderstorms
Saturday
86°F - Chance Rain Showers then Slight Chance Showers And Thunderstorms
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
Saturday Night
67°F - Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Sunday
84°F - Chance Showers And Thunderstorms

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: 6:27 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

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

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: 6:31 AM
Sun Transit: 12:51 AM
Sunset: 7:10 PM
Daylight: 12 hrs 39 mins
Moonrise: 7:03 AM
Moon Transit: 1:16 PM
Moonset: 7:17 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

12:34 AM - 3:04 AM
12:46 AM - 3:16 PM

Minor Periods

6:47 PM - 8:17 PM
6:33 AM - 8:03 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: 6:31 AM
Sun Transit: 12:51 AM
Sunset: 7:10 PM
Daylight: 12 hrs 39 mins
Moonrise: 7:03 AM
Moon Transit: 1:16 PM
Moonset: 7:17 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

12:34 AM - 3:04 AM
12:46 AM - 3:16 PM

Minor Periods

6:47 PM - 8:17 PM
6:33 AM - 8:03 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: 6:32 AM
Sun Transit: 12:50 AM
Sunset: 7:08 PM
Daylight: 12 hrs 36 mins
Moonrise: 8:12 AM
Moon Transit: 2:01 PM
Moonset: 7:39 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

1:20 AM - 3:50 AM
1:31 PM - 4:01 PM

Minor Periods

7:09 PM - 8:39 PM
7:42 AM - 9:12 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: 6:32 AM
Sun Transit: 12:50 AM
Sunset: 7:08 PM
Daylight: 12 hrs 36 mins
Moonrise: 8:12 AM
Moon Transit: 2:01 PM
Moonset: 7:39 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

1:20 AM - 3:50 AM
1:31 PM - 4:01 PM

Minor Periods

7:09 PM - 8:39 PM
7:42 AM - 9:12 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: 6:33 AM
Sun Transit: 12:50 AM
Sunset: 7:07 PM
Daylight: 12 hrs 34 mins
Moonrise: 9:20 AM
Moon Transit: 2:46 PM
Moonset: 8:03 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

2:04 AM - 4:34 AM
2:16 PM - 4:46 PM

Minor Periods

7:33 PM - 9:03 PM
8:50 AM - 10:20 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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