Water Temperature of the Illinois River in La Grange, IL

Current Water Temperature

36.8°F

Measurement Time: Monday, January 26, 2026, 9:00 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

23.9°F
Overcast
Overcast
13°F
29.3°F
54%
WNW 11.2 mph
15 mph
20.8°F
17.4°F
0 in
100%
9 mi
1024 mbar
0.8

Five Day Weather Forecast

Sunny
Wed
H: 34°F
L: -1°F
Overcast
Thu
H: 21°F
L: 6°F
Partly Cloudy
Fri
H: 21°F
L: 3°F
Sunny
Sat
H: 26°F
L: 8°F
Mist
Sun
H: 27°F
L: 6°F

Air Quality

AQI: 1 - Good
PM2.5: 11.05 μg/m3
PM10: 11.55 μg/m3
Carbon Monoxide: 235.85 μg/m3
Nitrogen Dioxide: 12.15 μg/m3
Sulphur Dioxide: 1.75 μg/m3
Ozone: 62 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 12:15 AM
Sunset: 5:17 PM
Daylight: 10 hrs 3 mins
Moonrise: 12:31 AM
Moon Transit: 8:33 PM
Moonset: 3:29 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.1%

Best Times for Fishing or Hunting

Major Periods

7:27 AM - 9:57 AM
8:03 PM - 10:33 PM

Minor Periods

12:01 AM - 1:31 PM
2:59 AM - 4:29 AM

Action Rating: 3 out of 5

Cold Weather Advisory issued January 28 at 1:47AM CST until January 28 at 10:00AM CST by NWS Lincoln IL

Effective: Wed January 28, 2026, 1:47 AM
Expires: Wed January 28, 2026, 10:00 AM

* WHAT...Very cold wind chills as low as 15 to 20 below. * WHERE...Portions of central, east central, and southeast Illinois. * WHEN...Until 10 AM CST this morning. * IMPACTS...The dangerously cold wind chills as low as 20 below zero could cause frostbite on exposed skin in as little as 30 minutes.

Use caution while traveling outside. Wear appropriate clothing, a hat, scarf and gloves.
Wednesday, January 28, 2026

Weather Forecast

Sunny
33.6°F
-0.9°F
13.1°F
60%
0 in
0%
0%
13 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 8.67 μg/m3
PM10: 9.13 μg/m3
Carbon Monoxide: 201.97 μg/m3
Nitrogen Dioxide: 5.83 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 73.76 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 12:15 AM
Sunset: 5:17 PM
Daylight: 10 hrs 3 mins
Moonrise: 12:31 AM
Moon Transit: 8:33 PM
Moonset: 3:29 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.1%

Best Times for Fishing or Hunting

Major Periods

7:27 AM - 9:57 AM
8:03 PM - 10:33 PM

Minor Periods

12:01 AM - 1:31 PM
2:59 AM - 4:29 AM

Action Rating: 3 out of 5

Thursday, January 29, 2026

Weather Forecast

Overcast
21°F
6.1°F
14.4°F
65%
0 in
0%
3%
6.9 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 9.52 μg/m3
PM10: 9.83 μg/m3
Carbon Monoxide: 193.57 μg/m3
Nitrogen Dioxide: 8.23 μg/m3
Sulphur Dioxide: 1.64 μg/m3
Ozone: 64.24 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 12:15 AM
Sunset: 5:18 PM
Daylight: 10 hrs 5 mins
Moonrise: 1:31 PM
Moon Transit: 9:38 PM
Moonset: 4:41 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.7%

Best Times for Fishing or Hunting

Major Periods

8:31 AM - 11:01 AM
9:08 PM - 11:38 PM

Minor Periods

1:01 PM - 2:31 PM
4:11 AM - 5:41 AM

Action Rating: 2 out of 5

Friday, January 30, 2026

Weather Forecast

Partly Cloudy
20.8°F
3°F
11.6°F
75%
0 in
0%
0%
17.9 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 8.97 μg/m3
PM10: 9.19 μg/m3
Carbon Monoxide: 191.61 μg/m3
Nitrogen Dioxide: 7.07 μg/m3
Sulphur Dioxide: 1.53 μg/m3
Ozone: 60.2 μg/m3

Astronomical

Sunrise: 7:12 AM
Sun Transit: 12:15 AM
Sunset: 5:19 PM
Daylight: 10 hrs 7 mins
Moonrise: 2:42 PM
Moon Transit: 10:42 PM
Moonset: 5:43 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.4%

Best Times for Fishing or Hunting

Major Periods

9:36 AM - 12:06 AM
12:00 AM - 12:00 AM

Minor Periods

2:12 PM - 3:42 PM
5:13 AM - 6:43 AM

Action Rating: 3 out of 5

Saturday, January 31, 2026

Weather Forecast

Sunny
26.4°F
7.9°F
14.1°F
70%
0 in
0%
0%
16.6 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 4.43 μg/m3
PM10: 4.59 μg/m3
Carbon Monoxide: 173.49 μg/m3
Nitrogen Dioxide: 4.95 μg/m3
Sulphur Dioxide: 1.31 μg/m3
Ozone: 63.28 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:15 AM
Sunset: 5:20 PM
Daylight: 10 hrs 9 mins
Moonrise: 3:58 PM
Moon Transit: 11:41 PM
Moonset: 6:33 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.9%

Best Times for Fishing or Hunting

Major Periods

10:38 AM - 1:08 PM
12:00 AM - 12:00 AM

Minor Periods

3:28 PM - 4:58 PM
6:03 AM - 7:33 AM

Action Rating: 4 out of 5

Sunday, February 1, 2026

Weather Forecast

Mist
26.7°F
5.7°F
16.7°F
87%
0 in
0%
0%
11.9 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 10.5 μg/m3
PM10: 10.85 μg/m3
Carbon Monoxide: 234.12 μg/m3
Nitrogen Dioxide: 10.56 μg/m3
Sulphur Dioxide: 1.49 μg/m3
Ozone: 51.92 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 12:15 AM
Sunset: 5:21 PM
Daylight: 10 hrs 11 mins
Moonrise: 5:15 PM
Moon Transit: 12:00 AM
Moonset: 7:13 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:35 AM - 2:05 PM

Minor Periods

4:45 PM - 6:15 PM
6:43 AM - 8:13 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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