Water Temperature of the Illinois River in La Grange, IL

Current Water Temperature

35.6°F

Measurement Time: Thursday, February 5, 2026, 2:00 AM CST

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

61.5°F
Partly cloudy
Partly cloudy
61.5°F
58.5°F
24%
WNW 15.4 mph
19.7 mph
55.1°F
35.1°F
0 in
75%
9 mi
1022 mbar
5.8

Five Day Weather Forecast

Sunny
Sun
H: 62°F
L: 37°F
Sunny
Mon
H: 63°F
L: 37°F
Patchy rain nearby
Tue
H: 74°F
L: 51°F
Overcast
Wed
H: 73°F
L: 59°F
Heavy rain
Thu
H: 77°F
L: 59°F

Air Quality

AQI: 1 - Good
PM2.5: 8.45 μg/m3
PM10: 9.75 μg/m3
Carbon Monoxide: 164.85 μg/m3
Nitrogen Dioxide: 2.25 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 101 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 1:01 PM
Sunset: 7:45 PM
Daylight: 13 hrs 26 mins
Moonrise: 7:19 AM
Moon Transit: 3:07 PM
Moonset: 11:05 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

2:01 AM - 4:31 AM
2:37 PM - 5:07 PM

Minor Periods

12:00 AM - 12:00 AM
6:49 AM - 8:19 AM

Action Rating: 3 out of 5

Flood Warning issued April 18 at 8:44PM CDT by NWS Lincoln IL

Effective: Sat April 18, 2026, 8:44 PM
Expires: Sun April 19, 2026, 12:45 PM

...The Flood Warning continues for the following rivers in Illinois... Illinois River at Beardstown affecting Morgan, Cass, Schuyler and Brown 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 further notice. * IMPACTS...At 18.0 feet, Seepage problems begin in the Lost Creek Drainage and Levee District. * ADDITIONAL DETAILS... - At 7:45 PM CDT Saturday the stage was 15.6 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:45 PM CDT Saturday was 15.6 feet. - Forecast...The river is expected to rise to 17.4 feet Thursday morning. Additional rises are possible thereafter. - 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. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov.


Flood Warning issued April 19 at 11:23AM CDT by NWS Lincoln IL

Effective: Sun April 19, 2026, 11:23 AM
Expires: Mon April 20, 2026, 3:30 AM

...The Flood Warning continues for the following rivers in Illinois... Illinois River at Beardstown affecting Brown, Morgan, Cass and Schuyler 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 further notice. * IMPACTS...At 18.0 feet, Seepage problems begin in the Lost Creek Drainage and Levee District. * ADDITIONAL DETAILS... - At 10:45 AM CDT Sunday the stage was 15.8 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:45 AM CDT Sunday was 15.8 feet. - Forecast...The river is expected to rise to a crest of 17.0 feet Wednesday evening. - Flood stage is 14.0 feet. - http://www.weather.gov/safety/flood

Caution is urged when walking near riverbanks. 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.


Hydrologic Outlook issued April 18 at 8:48PM CDT by NWS Lincoln IL

Effective: Sat April 18, 2026, 8:48 PM
Expires: Sun April 19, 2026, 10:00 AM

ESFILX This hydrologic outlook includes the following river in Illinois: Illinois River... The following river information is based on future predicted rainfall. The exact amount, intensity, timing, and location of the rain that will occur is still uncertain. These outlook stages are provided to show what may be expected if the forecast precipitation occurs. Once there is more certainty about the river forecasts, a flood warning or statement will be issued if the threat materializes.


Frost Advisory issued April 19 at 7:49AM CDT until April 20 at 8:00AM CDT by NWS Lincoln IL

Effective: Sun April 19, 2026, 7:49 AM
Expires: Sun April 19, 2026, 5:00 PM

* WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Portions of central, east central, southeast, and west central Illinois. * WHEN...From 1 AM to 8 AM CDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.


Flood Warning issued April 18 at 8:45PM CDT by NWS Lincoln IL

Effective: Sat April 18, 2026, 8:45 PM
Expires: Sun April 19, 2026, 12:45 PM

...The Flood Warning continues for the following rivers in Illinois... Illinois River near Havana affecting Cass, Mason and Fulton 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 further notice. * ADDITIONAL DETAILS... - At 7:45 PM CDT Saturday the stage was 15.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:45 PM CDT Saturday was 15.4 feet. - Forecast...The river is expected to rise to a crest of 16.8 feet early Thursday morning. - 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. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov.


Sunday, April 19, 2026

Weather Forecast

Sunny
61.7°F
36.5°F
48.7°F
56%
0 in
0%
0%
19.7 mph
6.3


Air Quality

AQI: 1 - Good
PM2.5: 7.29 μg/m3
PM10: 8.49 μg/m3
Carbon Monoxide: 161.37 μg/m3
Nitrogen Dioxide: 3.23 μg/m3
Sulphur Dioxide: 1.36 μg/m3
Ozone: 81.88 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 1:01 PM
Sunset: 7:45 PM
Daylight: 13 hrs 26 mins
Moonrise: 7:19 AM
Moon Transit: 3:07 PM
Moonset: 11:05 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

2:01 AM - 4:31 AM
2:37 PM - 5:07 PM

Minor Periods

12:00 AM - 12:00 AM
6:49 AM - 8:19 AM

Action Rating: 3 out of 5

Monday, April 20, 2026

Weather Forecast

Sunny
62.7°F
36.9°F
49.8°F
62%
0 in
0%
0%
12.5 mph
7.2


Air Quality

AQI: 1 - Good
PM2.5: 6.86 μg/m3
PM10: 7.91 μg/m3
Carbon Monoxide: 175.41 μg/m3
Nitrogen Dioxide: 3.82 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 84.36 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 1:01 PM
Sunset: 7:46 PM
Daylight: 13 hrs 29 mins
Moonrise: 8:09 AM
Moon Transit: 4:11 PM
Moonset: 12:05 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

3:04 AM - 5:34 AM
3:41 PM - 6:11 PM

Minor Periods

7:39 AM - 9:09 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, April 21, 2026

Weather Forecast

Patchy rain nearby
73.8°F
51.4°F
62.4°F
72%
0.05 in
77%
0%
20.6 mph
6.1


Air Quality

AQI: 1 - Good
PM2.5: 6.75 μg/m3
PM10: 7.61 μg/m3
Carbon Monoxide: 173.73 μg/m3
Nitrogen Dioxide: 3.6 μg/m3
Sulphur Dioxide: 2.11 μg/m3
Ozone: 94.04 μg/m3

Astronomical

Sunrise: 6:16 AM
Sun Transit: 1:00 PM
Sunset: 7:47 PM
Daylight: 13 hrs 31 mins
Moonrise: 9:10 AM
Moon Transit: 5:16 PM
Moonset: 12:18 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

4:09 AM - 6:39 AM
4:46 PM - 7:16 PM

Minor Periods

8:40 AM - 10:10 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, April 22, 2026

Weather Forecast

Overcast
73.2°F
59.1°F
66°F
80%
0 in
0%
0%
12.5 mph
3.8


Air Quality

AQI: 1 - Good
PM2.5: 4.92 μg/m3
PM10: 5.31 μg/m3
Carbon Monoxide: 156.21 μg/m3
Nitrogen Dioxide: 2.93 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 6:14 AM
Sun Transit: 1:00 PM
Sunset: 7:48 PM
Daylight: 13 hrs 33 mins
Moonrise: 10:20 AM
Moon Transit: 6:18 PM
Moonset: 1:20 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%

Best Times for Fishing or Hunting

Major Periods

5:13 AM - 7:43 AM
5:48 PM - 8:18 PM

Minor Periods

9:50 AM - 11:20 AM
12:50 AM - 2:20 AM

Action Rating: 2 out of 5

Thursday, April 23, 2026

Weather Forecast

Heavy rain
76.6°F
58.6°F
66.5°F
78%
1.09 in
84%
0%
20.1 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 4.96 μg/m3
PM10: 5.27 μg/m3
Carbon Monoxide: 185.31 μg/m3
Nitrogen Dioxide: 8.31 μg/m3
Sulphur Dioxide: 1.56 μg/m3
Ozone: 59.23 μg/m3

Astronomical

Sunrise: 6:13 AM
Sun Transit: 1:00 PM
Sunset: 7:49 PM
Daylight: 13 hrs 36 mins
Moonrise: 11:33 AM
Moon Transit: 7:16 PM
Moonset: 2:09 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%

Best Times for Fishing or Hunting

Major Periods

6:13 AM - 8:43 AM
6:46 PM - 9:16 PM

Minor Periods

11:03 AM - 12:33 AM
1:39 AM - 3:09 AM

Action Rating: 3 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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