Water Temperature of the Illinois River in La Grange, IL

Current Water Temperature

77.1°F

Measurement Time: Monday, June 8, 2026, 10:00 AM CDT

Temperature Locations

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Local Points of Interest

Versailles, IL; Beardstown, IL

Illinois River

Station Name: La Grange L&D 8
Data Source: USGS

Elevation Above Sea Level: 427 feet

Nearest Address:
Lock & Dam Road
La Grange, IL 62378
Cass County

GPS Coordinates: 39.9403, -90.5344

Nearby Water Temperatures

Illinois River, Florence, IL (21.6 mi)
Mason Tazewell Drainage Ditch, Topeka, IL (42.3 mi)
Mississippi River, Saverton, MO (43.4 mi)
Mississippi River, Clarksville, MO (43.9 mi)
Lick Creek, Springfield, IL (46.8 mi)
Mississippi River, Quincy, IL (47.4 mi)
Sugar Creek, Chatham, IL (50.4 mi)
Mississippi River, Canton, MO (53.8 mi)
Mississippi River, Keokuk, IA (54.3 mi)
Mississippi River, Cap Au Gris, MO (65.3 mi)
Illinois River, Peoria, IL (67.7 mi)
Mississippi River, Gladstone, IL (69.9 mi)
Mississippi River, Alton, IL (77 mi)
Missouri River, St Charles, MO (79.8 mi)
Mississippi River, New Boston, IL (90.8 mi)

Weather for La Grange, Illinois

Current Weather

72.5°F
Sunny
Sunny
76.7°F
75.5°F
94%
NE 4.7 mph
9.1 mph
70.2°F
67.2°F
0 in
0%
9 mi
1023 mbar
0.4

Five Day Weather Forecast

Sunny
Tue
H: 93°F
L: 68°F
Sunny
Wed
H: 89°F
L: 71°F
Sunny
Thu
H: 90°F
L: 72°F
Sunny
Fri
H: 88°F
L: 73°F
Sunny
Sat
H: 87°F
L: 69°F

Air Quality

AQI: 1 - Good
PM2.5: 16.5 μg/m3
PM10: 17.6 μg/m3
Carbon Monoxide: 192 μg/m3
Nitrogen Dioxide: 34.1 μg/m3
Sulphur Dioxide: 1.6 μg/m3
Ozone: 32 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:08 PM
Sunset: 8:31 PM
Daylight: 14 hrs 45 mins
Moonrise: 5:43 AM
Moon Transit: 1:32 PM
Moonset: 9:09 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:26 AM - 2:56 AM
1:02 PM - 3:32 PM

Minor Periods

8:39 PM - 10:09 PM
5:13 AM - 6:43 AM

Action Rating: 4 out of 5

Flood Warning issued July 13 at 8:40PM CDT until July 19 at 1:00AM CDT by NWS Lincoln IL

Effective: Mon July 13, 2026, 8:40 PM
Expires: Tue July 14, 2026, 12:45 PM

...The Flood Warning continues for the following rivers in Illinois... Illinois River at Beardstown affecting Cass, Schuyler, Morgan and Brown Counties. ...The Flood Warning is extended for the following rivers in Illinois... Illinois River near Havana affecting Cass, Fulton and Mason Counties. .The following forecasts are based on observed precipitation, soil moisture conditions, and forecast precipitation. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Illinois River at Beardstown. * WHEN...Until early Sunday morning. * IMPACTS...At 18.0 feet, Seepage problems begin in the Lost Creek Drainage and Levee District. * ADDITIONAL DETAILS... - At 7:45 PM CDT Monday the stage was 16.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:45 PM CDT Monday was 16.8 feet. - Forecast...The river is expected to fall below flood stage Saturday evening and continue falling to 12.8 feet Monday, July 20. - Flood stage is 14.0 feet. - http://www.weather.gov/safety/flood

Persons with interests along this river need to remain aware of the latest forecasts and associated flood risk for their area. Stay tuned for further updates on this flooding situation. Additional information is available at www.weather.gov.


Flood Warning issued July 13 at 8:40PM CDT until July 18 at 7:00PM CDT by NWS Lincoln IL

Effective: Mon July 13, 2026, 8:40 PM
Expires: Tue July 14, 2026, 12:45 PM

...The Flood Warning continues for the following rivers in Illinois... Illinois River at Beardstown affecting Cass, Schuyler, Morgan and Brown Counties. ...The Flood Warning is extended for the following rivers in Illinois... Illinois River near Havana affecting Cass, Fulton and Mason Counties. .The following forecasts are based on observed precipitation, soil moisture conditions, and forecast precipitation. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Illinois River near Havana. * WHEN...Until Saturday evening. * ADDITIONAL DETAILS... - At 7:45 PM CDT Monday the stage was 16.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:45 PM CDT Monday was 16.5 feet. - Forecast...The river is expected to fall below flood stage early Saturday afternoon and continue falling to 13.0 feet Monday, July 20. - Flood stage is 14.0 feet. - http://www.weather.gov/safety/flood

Persons with interests along this river need to remain aware of the latest forecasts and associated flood risk for their area. Stay tuned for further updates on this flooding situation. Additional information is available at www.weather.gov.
Tuesday, July 14, 2026

Weather Forecast

Sunny
93.4°F
68°F
79.6°F
75%
0 in
17%
0%
6.3 mph
10.1


Air Quality

AQI: 1 - Good
PM2.5: 10.08 μg/m3
PM10: 11.34 μg/m3
Carbon Monoxide: 182.42 μg/m3
Nitrogen Dioxide: 15.18 μg/m3
Sulphur Dioxide: 1.62 μg/m3
Ozone: 89.17 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:08 PM
Sunset: 8:31 PM
Daylight: 14 hrs 45 mins
Moonrise: 5:43 AM
Moon Transit: 1:32 PM
Moonset: 9:09 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:26 AM - 2:56 AM
1:02 PM - 3:32 PM

Minor Periods

8:39 PM - 10:09 PM
5:13 AM - 6:43 AM

Action Rating: 4 out of 5

Wednesday, July 15, 2026

Weather Forecast

Sunny
88.6°F
71.3°F
79.7°F
79%
0.04 in
57%
0%
4.3 mph
10.1


Air Quality

AQI: 1 - Good
PM2.5: 8.27 μg/m3
PM10: 9.15 μg/m3
Carbon Monoxide: 181 μg/m3
Nitrogen Dioxide: 14.29 μg/m3
Sulphur Dioxide: 1.59 μg/m3
Ozone: 94.46 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:08 PM
Sunset: 8:30 PM
Daylight: 14 hrs 44 mins
Moonrise: 7:03 AM
Moon Transit: 2:30 PM
Moonset: 9:44 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

1:27 AM - 3:57 AM
2:00 PM - 4:30 PM

Minor Periods

9:14 PM - 10:44 PM
6:33 AM - 8:03 AM

Action Rating: 3 out of 5

Thursday, July 16, 2026

Weather Forecast

Sunny
89.5°F
71.6°F
80.3°F
78%
0.01 in
22%
0%
5.1 mph
10


Air Quality

AQI: 1 - Good
PM2.5: 5.35 μg/m3
PM10: 5.8 μg/m3
Carbon Monoxide: 170.08 μg/m3
Nitrogen Dioxide: 7.23 μg/m3
Sulphur Dioxide: 2.05 μg/m3
Ozone: 101.75 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:08 PM
Sunset: 8:29 PM
Daylight: 14 hrs 43 mins
Moonrise: 8:21 AM
Moon Transit: 3:23 PM
Moonset: 10:13 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

2:23 AM - 4:53 AM
2:53 PM - 5:23 PM

Minor Periods

9:43 PM - 11:13 PM
7:51 AM - 9:21 AM

Action Rating: 3 out of 5

Friday, July 17, 2026

Weather Forecast

Sunny
88.4°F
72.6°F
79.8°F
82%
0.07 in
60%
0%
9.2 mph
8.3


Air Quality

AQI: 1 - Good
PM2.5: 3.09 μg/m3
PM10: 3.17 μg/m3
Carbon Monoxide: 153.51 μg/m3
Nitrogen Dioxide: 5.03 μg/m3
Sulphur Dioxide: 0.91 μg/m3
Ozone: 82.88 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:08 PM
Sunset: 8:29 PM
Daylight: 14 hrs 41 mins
Moonrise: 9:34 AM
Moon Transit: 4:12 PM
Moonset: 10:38 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

3:13 AM - 5:43 AM
3:42 PM - 6:12 PM

Minor Periods

10:08 PM - 11:38 PM
9:04 AM - 10:34 AM

Action Rating: 3 out of 5

Saturday, July 18, 2026

Weather Forecast

Sunny
87.2°F
69.4°F
77.9°F
81%
0.03 in
45%
0%
15.7 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 2.2 μg/m3
PM10: 2.56 μg/m3
Carbon Monoxide: 195.63 μg/m3
Nitrogen Dioxide: 6.41 μg/m3
Sulphur Dioxide: 0.75 μg/m3
Ozone: 58.38 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:08 PM
Sunset: 8:28 PM
Daylight: 14 hrs 40 mins
Moonrise: 10:44 AM
Moon Transit: 4:57 PM
Moonset: 11:00 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

4:00 AM - 6:30 AM
4:27 PM - 6:57 PM

Minor Periods

12:00 AM - 12:00 AM
10:14 AM - 11:44 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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