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

77.2°F
Clear
Clear
81.8°F
81°F
85%
SSW 6.9 mph
14.6 mph
76.6°F
72.4°F
0 in
0%
9 mi
1017 mbar
0

Five Day Weather Forecast

Sunny
Thu
H: 96°F
L: 71°F
Sunny
Fri
H: 90°F
L: 70°F
Sunny
Sat
H: 92°F
L: 75°F
Sunny
Sun
H: 89°F
L: 71°F
Patchy rain nearby
Mon
H: 87°F
L: 68°F

Air Quality

AQI: 1 - Good
PM2.5: 6.4 μg/m3
PM10: 7.5 μg/m3
Carbon Monoxide: 120 μg/m3
Nitrogen Dioxide: 7.4 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 34 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 1:06 PM
Sunset: 8:35 PM
Daylight: 14 hrs 57 mins
Moonrise: 10:35 PM
Moon Transit: 2:57 AM
Moonset: 7:55 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.5%

Best Times for Fishing or Hunting

Major Periods

2:27 AM - 4:57 AM
2:45 PM - 5:15 PM

Minor Periods

10:05 PM - 11:35 PM
7:25 AM - 8:55 AM

Action Rating: 2 out of 5

Extreme Heat Warning issued July 1 at 1:24PM CDT until July 3 at 7:00PM CDT by NWS Lincoln IL

Effective: Wed July 1, 2026, 1:24 PM
Expires: Thu July 2, 2026, 4:15 AM

* WHAT...Dangerously hot conditions with afternoon heat index values up to 105 to 110. * WHERE...Portions of central, east central, southeast, and west central Illinois. * WHEN...Until 7 PM CDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave children and pets unattended in parked vehicles. Car interiors will reach lethal temperatures in a matter of minutes.


Extreme Heat Warning issued July 2 at 3:04AM CDT until July 3 at 7:00PM CDT by NWS Lincoln IL

Effective: Thu July 2, 2026, 3:04 AM
Expires: Thu July 2, 2026, 4:00 PM

* WHAT...Dangerously hot conditions with heat index values 105 to 110. * WHERE...Along and south of a Rushville...to Lincoln...to Danville line. * WHEN...Until 7 PM CDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
Thursday, July 2, 2026

Weather Forecast

Sunny
96.4°F
70.9°F
82.4°F
76%
0.05 in
57%
0%
21.7 mph
10.1


Air Quality

AQI: 1 - Good
PM2.5: 7.07 μg/m3
PM10: 8.63 μg/m3
Carbon Monoxide: 116.83 μg/m3
Nitrogen Dioxide: 4.08 μg/m3
Sulphur Dioxide: 1.28 μg/m3
Ozone: 69.29 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 1:06 PM
Sunset: 8:35 PM
Daylight: 14 hrs 57 mins
Moonrise: 10:35 PM
Moon Transit: 2:57 AM
Moonset: 7:55 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.5%

Best Times for Fishing or Hunting

Major Periods

2:27 AM - 4:57 AM
2:45 PM - 5:15 PM

Minor Periods

10:05 PM - 11:35 PM
7:25 AM - 8:55 AM

Action Rating: 2 out of 5

Friday, July 3, 2026

Weather Forecast

Sunny
90.3°F
70.4°F
80.3°F
80%
0.06 in
57%
0%
11.4 mph
10


Air Quality

AQI: 1 - Good
PM2.5: 5.63 μg/m3
PM10: 6.05 μg/m3
Carbon Monoxide: 136.25 μg/m3
Nitrogen Dioxide: 4.65 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 77.58 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 1:06 PM
Sunset: 8:35 PM
Daylight: 14 hrs 57 mins
Moonrise: 10:59 PM
Moon Transit: 3:42 AM
Moonset: 8:59 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.3%

Best Times for Fishing or Hunting

Major Periods

3:12 AM - 5:42 AM
3:30 PM - 6:00 PM

Minor Periods

10:29 PM - 11:59 PM
8:29 AM - 9:59 AM

Action Rating: 3 out of 5

Saturday, July 4, 2026

Weather Forecast

Sunny
91.5°F
75.1°F
82.1°F
80%
0.1 in
59%
0%
10.1 mph
8.4


Air Quality

AQI: 1 - Good
PM2.5: 4.95 μg/m3
PM10: 5.46 μg/m3
Carbon Monoxide: 131.71 μg/m3
Nitrogen Dioxide: 4.38 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 77.21 μg/m3

Astronomical

Sunrise: 5:39 AM
Sun Transit: 1:06 PM
Sunset: 8:34 PM
Daylight: 14 hrs 56 mins
Moonrise: 11:21 PM
Moon Transit: 4:26 AM
Moonset: 10:03 AM
Moon Phase: Waning Gibbous
Moon Illumination: 70.6%

Best Times for Fishing or Hunting

Major Periods

3:56 AM - 6:26 AM
4:13 PM - 6:43 PM

Minor Periods

12:00 AM - 12:00 AM
9:33 AM - 11:03 AM

Action Rating: 2 out of 5

Sunday, July 5, 2026

Weather Forecast

Sunny
89.2°F
70.5°F
78.6°F
83%
0.39 in
78%
0%
11 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 4.18 μg/m3
PM10: 5.07 μg/m3
Carbon Monoxide: 135.77 μg/m3
Nitrogen Dioxide: 6.76 μg/m3
Sulphur Dioxide: 0.54 μg/m3
Ozone: 77.08 μg/m3

Astronomical

Sunrise: 5:39 AM
Sun Transit: 1:06 PM
Sunset: 8:34 PM
Daylight: 14 hrs 55 mins
Moonrise: 12:21 AM
Moon Transit: 5:09 AM
Moonset: 11:07 AM
Moon Phase: Waning Gibbous
Moon Illumination: 59.8%

Best Times for Fishing or Hunting

Major Periods

4:39 AM - 7:09 AM
4:56 PM - 7:26 PM

Minor Periods

10:37 AM - 12:07 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, July 6, 2026

Weather Forecast

Patchy rain nearby
87.3°F
67.7°F
76.1°F
85%
0.25 in
79%
0%
8.9 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 3.2 μg/m3
PM10: 3.54 μg/m3
Carbon Monoxide: 217.25 μg/m3
Nitrogen Dioxide: 15.88 μg/m3
Sulphur Dioxide: 0.69 μg/m3
Ozone: 39.5 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 1:07 PM
Sunset: 8:34 PM
Daylight: 14 hrs 54 mins
Moonrise: 12:43 AM
Moon Transit: 5:52 AM
Moonset: 12:12 AM
Moon Phase: Last Quarter
Moon Illumination: 48.6%

Best Times for Fishing or Hunting

Major Periods

5:22 AM - 7:52 AM
11:45 AM - 2:15 PM

Minor Periods

11:42 AM - 1:12 PM
12:00 AM - 12:00 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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