Water Temperature of the Illinois River in Seneca, IL

Current Water Temperature

31.8°F

Measurement Time: Sunday, January 21, 2024, 8:45 AM CST

Temperature Locations

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Illinois River

Station Name: Seneca
Data Source: USGS

Elevation Above Sea Level: 499 feet / 152 meters

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

GPS Coordinates: 41.2997, -88.6142

Nearby Water Temperatures

Illinois River, Seneca, IL (0.0 mi)
Illinois River, Marseilles, IL (5.5 mi)
Hanson Gravel Pit, Morris, IL (8.0 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 (32.0 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 (59.0 mi)

Weather for Seneca, Illinois

Current Weather

76.3°F
Partly Cloudy
Conditions: Partly Cloudy
Humidity: 99%
Feels Like: 81.3°F
Wind: ENE 2.7 mph
Wind Gusts: 5.2 mph
Pressure: 30.01 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Moderate rain
Fri
H: 80°F
L: 72°F
Moderate rain
Sat
H: 89°F
L: 73°F
Moderate rain
Sun
H: 89°F
L: 76°F
Moderate rain
Mon
H: 98°F
L: 79°F
Patchy rain nearby
Tue
H: 91°F
L: 76°F

Air Quality

AQI: 1 - Good
PM2.5: 3.15 μg/m3
PM10: 3.33 μg/m3
Carbon Monoxide: 495.8 μg/m3
Nitrogen Dioxide: 18.13 μg/m3
Sulphur Dioxide: 2.78 μg/m3
Ozone: 67 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 1:01 PM
Sunset: 8:18 PM
Daylight: 14 hrs 35 mins
Moonrise: 6:25 AM
Moon Transit: 1:55 PM
Moonset: 9:13 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

1:10 AM - 3:40 AM
1:25 PM - 3:55 PM

Minor Periods

8:43 PM - 10:13 PM
5:55 AM - 7:25 AM

Action Rating: 5 out of 5

Flood Watch issued July 25 at 5:30PM CDT until July 26 at 7:00PM CDT by NWS Chicago IL

Effective: Fri July 25, 2025, 5:30 PM
Expires: Sat July 26, 2025, 5:00 AM

* WHAT...Flash flooding caused by excessive rainfall due to repeated rounds of torrential rain-producing thunderstorms is possible. * WHERE...Cook, DuPage, Eastern Will, Grundy, Kane, Kendall, Will counties in Illinois and Lake county in Indiana. * WHEN...Through Saturday evening. * IMPACTS...Creeks and streams may rise out of their banks. In addition, roads and streets may flood, especially in areas where storm drains are clogged with debris. Finally, flooding of basements may occur if thunderstorms train over urban areas. * ADDITIONAL DETAILS... - Over the next 36 hours, several rounds of torrential rain- producing thunderstorms are possible in the watch area including over areas that experienced several inches of rain in the past few days. The tropical-like airmass will support rain rates in excess of 2 inches per hour in the strongest thunderstorms, leading to a threat for flash flooding. - http://www.weather.gov/safety/flood

Monitor the latest forecasts and be prepared to take quick action should flooding develop.


Flood Watch issued July 25 at 5:30PM CDT until July 26 at 7:00PM CDT by NWS Chicago IL

Effective: Fri July 25, 2025, 5:30 PM
Expires: Sat July 26, 2025, 5:00 AM

* WHAT...Flash flooding caused by excessive rainfall due to repeated rounds of torrential rain-producing thunderstorms is possible. * WHERE...Cook, DuPage, Eastern Will, Grundy, Kane, Kendall, Will counties in Illinois and Lake county in Indiana. * WHEN...Through Saturday evening. * IMPACTS...Creeks and streams may rise out of their banks. In addition, roads and streets may flood, especially in areas where storm drains are clogged with debris. Finally, flooding of basements may occur if thunderstorms train over urban areas. * ADDITIONAL DETAILS... - Over the next 36 hours, several rounds of torrential rain- producing thunderstorms are possible in the watch area including over areas that experienced several inches of rain in the past few days. The tropical-like airmass will support rain rates in excess of 2 inches per hour in the strongest thunderstorms, leading to a threat for flash flooding. - http://www.weather.gov/safety/flood

Monitor the latest forecasts and be prepared to take quick action should flooding develop.


Flood Watch issued July 25 at 5:30PM CDT until July 26 at 7:00PM CDT by NWS Chicago IL

Effective: Fri July 25, 2025, 5:30 PM
Expires: Sat July 26, 2025, 5:00 AM

* WHAT...Flash flooding caused by excessive rainfall due to repeated rounds of torrential rain-producing thunderstorms is possible. * WHERE...Cook, DuPage, Eastern Will, Grundy, Kane, Kendall, Will counties in Illinois and Lake county in Indiana. * WHEN...Through Saturday evening. * IMPACTS...Creeks and streams may rise out of their banks. In addition, roads and streets may flood, especially in areas where storm drains are clogged with debris. Finally, flooding of basements may occur if thunderstorms train over urban areas. * ADDITIONAL DETAILS... - Over the next 36 hours, several rounds of torrential rain- producing thunderstorms are possible in the watch area including over areas that experienced several inches of rain in the past few days. The tropical-like airmass will support rain rates in excess of 2 inches per hour in the strongest thunderstorms, leading to a threat for flash flooding. - http://www.weather.gov/safety/flood

Monitor the latest forecasts and be prepared to take quick action should flooding develop.


Flood Watch issued July 25 at 5:30PM CDT until July 26 at 7:00PM CDT by NWS Chicago IL

Effective: Fri July 25, 2025, 5:30 PM
Expires: Sat July 26, 2025, 5:00 AM

* WHAT...Flash flooding caused by excessive rainfall due to repeated rounds of torrential rain-producing thunderstorms is possible. * WHERE...Boone, De Kalb, La Salle, Lee, Ogle, Winnebago, Lake IL and McHenry counties in Illinois. * WHEN...Through Saturday evening. * IMPACTS...Creeks and streams may rise out of their banks. In addition, roads and streets may flood, especially in areas where storm drains are clogged with debris. Finally, flooding of basements may occur if thunderstorms train over urban areas. * ADDITIONAL DETAILS... - Over the next 36 hours, several rounds of torrential rain- producing thunderstorms are possible in the watch area including over areas that experienced several inches of rain in the past few days. The tropical-like airmass will support rain rates in excess of 2 inches per hour in the strongest thunderstorms, leading to a threat for flash flooding. - http://www.weather.gov/safety/flood

Monitor the latest forecasts and be prepared to take quick action should flooding develop.


Flood Watch issued July 25 at 5:30PM CDT until July 26 at 7:00PM CDT by NWS Chicago IL

Effective: Fri July 25, 2025, 5:30 PM
Expires: Sat July 26, 2025, 5:00 AM

* WHAT...Flash flooding caused by excessive rainfall due to repeated rounds of torrential rain-producing thunderstorms is possible. * WHERE...Cook, DuPage, Eastern Will, Grundy, Kane, Kendall, Will counties in Illinois and Lake county in Indiana. * WHEN...Through Saturday evening. * IMPACTS...Creeks and streams may rise out of their banks. In addition, roads and streets may flood, especially in areas where storm drains are clogged with debris. Finally, flooding of basements may occur if thunderstorms train over urban areas. * ADDITIONAL DETAILS... - Over the next 36 hours, several rounds of torrential rain- producing thunderstorms are possible in the watch area including over areas that experienced several inches of rain in the past few days. The tropical-like airmass will support rain rates in excess of 2 inches per hour in the strongest thunderstorms, leading to a threat for flash flooding. - http://www.weather.gov/safety/flood

Monitor the latest forecasts and be prepared to take quick action should flooding develop.
Friday, July 25, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 75.5°F
Average Humidity: 95%
Chance of Rain: 83%
Wind: 5.1 mph
UV Index: 2.4

Air Quality

AQI: 1 - Good
PM2.5: 3.78 μg/m3
PM10: 3.96 μg/m3
Carbon Monoxide: 305.55 μg/m3
Nitrogen Dioxide: 17.89 μg/m3
Sulphur Dioxide: 1.84 μg/m3
Ozone: 76.72 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 1:01 PM
Sunset: 8:18 PM
Daylight: 14 hrs 35 mins
Moonrise: 6:25 AM
Moon Transit: 1:55 PM
Moonset: 9:13 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

1:10 AM - 3:40 AM
1:25 PM - 3:55 PM

Minor Periods

8:43 PM - 10:13 PM
5:55 AM - 7:25 AM

Action Rating: 5 out of 5

Saturday, July 26, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 77.6°F
Average Humidity: 93%
Chance of Rain: 88%
Wind: 11 mph
UV Index: 1.3

Air Quality

AQI: 1 - Good
PM2.5: 6.57 μg/m3
PM10: 6.98 μg/m3
Carbon Monoxide: 433.86 μg/m3
Nitrogen Dioxide: 15.16 μg/m3
Sulphur Dioxide: 2.85 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 1:01 PM
Sunset: 8:17 PM
Daylight: 14 hrs 33 mins
Moonrise: 7:37 AM
Moon Transit: 2:43 PM
Moonset: 9:38 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

2:01 AM - 4:31 AM
2:13 PM - 4:43 PM

Minor Periods

9:08 PM - 10:38 PM
7:07 AM - 8:37 AM

Action Rating: 3 out of 5

Sunday, July 27, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 81.9°F
Average Humidity: 90%
Chance of Rain: 89%
Wind: 6.3 mph
UV Index: 2.4

Air Quality

AQI: 1 - Good
PM2.5: 6.45 μg/m3
PM10: 6.78 μg/m3
Carbon Monoxide: 334.48 μg/m3
Nitrogen Dioxide: 12.14 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 85.32 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:01 PM
Sunset: 8:16 PM
Daylight: 14 hrs 31 mins
Moonrise: 8:46 AM
Moon Transit: 3:28 PM
Moonset: 9:59 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

2:47 AM - 5:17 AM
2:58 PM - 5:28 PM

Minor Periods

9:29 PM - 10:59 PM
8:16 AM - 9:46 AM

Action Rating: 4 out of 5

Monday, July 28, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 86°F
Average Humidity: 83%
Chance of Rain: 85%
Wind: 11.4 mph
UV Index: 2.4

Air Quality

AQI: 1 - Good
PM2.5: 6.93 μg/m3
PM10: 7.22 μg/m3
Carbon Monoxide: 371.85 μg/m3
Nitrogen Dioxide: 11.94 μg/m3
Sulphur Dioxide: 2.34 μg/m3
Ozone: 91.16 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:01 PM
Sunset: 8:15 PM
Daylight: 14 hrs 29 mins
Moonrise: 9:50 AM
Moon Transit: 4:10 PM
Moonset: 10:19 PM
Moon Phase: Waxing Crescent
Moon Illumination: 9.3%

Best Times for Fishing or Hunting

Major Periods

3:30 AM - 6:00 AM
3:40 PM - 6:10 PM

Minor Periods

9:49 PM - 11:19 PM
9:20 AM - 10:50 AM

Action Rating: 3 out of 5

Tuesday, July 29, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 82.4°F
Average Humidity: 85%
Chance of Rain: 88%
Wind: 7.2 mph
UV Index: 2

Air Quality

AQI: 1 - Good
PM2.5: 5.79 μg/m3
PM10: 6.38 μg/m3
Carbon Monoxide: 442.29 μg/m3
Nitrogen Dioxide: 22.24 μg/m3
Sulphur Dioxide: 3.07 μg/m3
Ozone: 56.62 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:00 PM
Sunset: 8:14 PM
Daylight: 14 hrs 27 mins
Moonrise: 10:54 AM
Moon Transit: 4:50 PM
Moonset: 10:38 PM
Moon Phase: Waxing Crescent
Moon Illumination: 16.9%

Best Times for Fishing or Hunting

Major Periods

4:11 AM - 6:41 AM
4:20 PM - 6:50 PM

Minor Periods

10:08 PM - 11:38 PM
10:24 AM - 11:54 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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