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

63.7°F
Partly cloudy
Partly cloudy
63.7°F
66°F
32%
SSW 15 mph
18.6 mph
65.6°F
40.3°F
0 in
50%
9 mi
1018 mbar
2.5

Five Day Weather Forecast

Sunny
Sun
H: 71°F
L: 37°F
Partly Cloudy
Mon
H: 82°F
L: 54°F
Patchy rain nearby
Tue
H: 75°F
L: 57°F
Moderate rain
Wed
H: 48°F
L: 46°F
Heavy rain
Thu
H: 55°F
L: 46°F

Air Quality

AQI: 1 - Good
PM2.5: 6.35 μg/m3
PM10: 6.45 μg/m3
Carbon Monoxide: 197.85 μg/m3
Nitrogen Dioxide: 5.85 μg/m3
Sulphur Dioxide: 2.95 μg/m3
Ozone: 91 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 1:06 PM
Sunset: 7:23 PM
Daylight: 12 hrs 32 mins
Moonrise: 4:06 PM
Moon Transit: 10:58 PM
Moonset: 5:14 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

10:00 AM - 12:30 AM
12:00 AM - 12:00 AM

Minor Periods

3:36 PM - 5:06 PM
4:44 AM - 6:14 AM

Action Rating: 2 out of 5

Special Weather Statement issued March 29 at 9:46AM CDT by NWS Quad Cities IA IL

Effective: Sun March 29, 2026, 9:46 AM
Expires: Sun March 29, 2026, 6:00 PM

Gusty south winds gusting up to 30 MPH will combine with mild temperatures, low humidity, and plentiful dried vegetation to produce an Elevated Fire Danger through early this evening. If a fire were to start under these conditions, there would be an increased threat of fire spread and be difficult to control. Outdoor burning is strongly discouraged. Use extra caution while operating outdoor equipment around dry vegetation and do not carelessly discard cigarettes.


Sunday, March 29, 2026

Weather Forecast

Sunny
70.9°F
37.4°F
53.4°F
51%
0 in
0%
0%
15.2 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 7.61 μg/m3
PM10: 7.77 μg/m3
Carbon Monoxide: 184.97 μg/m3
Nitrogen Dioxide: 4.33 μg/m3
Sulphur Dioxide: 3.58 μg/m3
Ozone: 89.48 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 1:06 PM
Sunset: 7:23 PM
Daylight: 12 hrs 32 mins
Moonrise: 4:06 PM
Moon Transit: 10:58 PM
Moonset: 5:14 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

10:00 AM - 12:30 AM
12:00 AM - 12:00 AM

Minor Periods

3:36 PM - 5:06 PM
4:44 AM - 6:14 AM

Action Rating: 2 out of 5

Monday, March 30, 2026

Weather Forecast

Partly Cloudy
81.7°F
53.6°F
66.4°F
66%
0 in
0%
0%
19.9 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 7.39 μg/m3
PM10: 7.5 μg/m3
Carbon Monoxide: 176.05 μg/m3
Nitrogen Dioxide: 3.97 μg/m3
Sulphur Dioxide: 2.39 μg/m3
Ozone: 93.96 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 1:06 PM
Sunset: 7:24 PM
Daylight: 12 hrs 35 mins
Moonrise: 5:13 PM
Moon Transit: 11:42 PM
Moonset: 5:38 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.0%

Best Times for Fishing or Hunting

Major Periods

10:46 AM - 1:16 PM
12:00 AM - 12:00 AM

Minor Periods

4:43 PM - 6:13 PM
5:08 AM - 6:38 AM

Action Rating: 3 out of 5

Tuesday, March 31, 2026

Weather Forecast

Patchy rain nearby
75.4°F
56.8°F
66°F
80%
0.12 in
89%
0%
22.6 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 7.29 μg/m3
PM10: 7.67 μg/m3
Carbon Monoxide: 156.77 μg/m3
Nitrogen Dioxide: 2.73 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 97.56 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 1:06 PM
Sunset: 7:25 PM
Daylight: 12 hrs 37 mins
Moonrise: 6:19 PM
Moon Transit: 12:00 AM
Moonset: 6:01 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:30 AM - 2:00 PM

Minor Periods

5:49 PM - 7:19 PM
5:31 AM - 7:01 AM

Action Rating: 4 out of 5

Wednesday, April 1, 2026

Weather Forecast

Moderate rain
47.7°F
46.4°F
48.8°F
79%
0.57 in
80%
0%
14.3 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 3.86 μg/m3
PM10: 4.19 μg/m3
Carbon Monoxide: 172.86 μg/m3
Nitrogen Dioxide: 2.95 μg/m3
Sulphur Dioxide: 1.56 μg/m3
Ozone: 88.04 μg/m3

Astronomical

Sunrise: 6:46 AM
Sun Transit: 1:05 PM
Sunset: 7:26 PM
Daylight: 12 hrs 40 mins
Moonrise: 7:22 PM
Moon Transit: 12:25 AM
Moonset: 6:22 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:12 AM - 2:42 PM

Minor Periods

6:52 PM - 8:22 PM
5:52 AM - 7:22 AM

Action Rating: 3 out of 5

Thursday, April 2, 2026

Weather Forecast

Heavy rain
55.2°F
45.7°F
49.6°F
95%
2.54 in
89%
0%
9.6 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 4.17 μg/m3
PM10: 4.17 μg/m3
Carbon Monoxide: 194.2 μg/m3
Nitrogen Dioxide: 5.8 μg/m3
Sulphur Dioxide: 3.04 μg/m3
Ozone: 72.62 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 1:05 PM
Sunset: 7:27 PM
Daylight: 12 hrs 43 mins
Moonrise: 8:27 PM
Moon Transit: 1:07 AM
Moonset: 6:44 AM
Moon Phase: Full
Moon Illumination: 99.5%

Best Times for Fishing or Hunting

Major Periods

12:37 AM - 3:07 AM
12:54 AM - 3:24 PM

Minor Periods

7:57 PM - 9:27 PM
6:14 AM - 7:44 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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