Water Temperature of the Illinois River in La Grange, IL

Current Water Temperature

65.9°F 18.8°C
Cool Brisk & Refreshing
65.9°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Feels brisk on entry. Great for short dips; wetsuit recommended for extended swimming or water sports.

Measurement Time: Thursday, November 12, 2026, 9:00 AM CST

Temperature Locations

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Local Points of Interest

Versailles, IL; Beardstown, IL

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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

37.4°F
Clear
Conditions: Clear
Humidity: 59%
Feels Like: 29.8°F
Wind: N 6.8 mph
Wind Gusts: 14.3 mph
Pressure: 30.07 in
Precipitation: 0 in
Cloud Cover: 7%
Visibility: 18.1 mi
UV Index: 0

Five-Day Weather Forecast

Overcast
Thu
H: 48°F
L: 34°F
Mainly Sunny
Fri
H: 44°F
L: 31°F
Overcast
Sat
H: 48°F
L: 23°F
Overcast
Sun
H: 52°F
L: 33°F
Overcast
Mon
H: 56°F
L: 35°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
1 μg/m³
Good
PM10
1.1 μg/m³
Good
Ozone (O3)
63 μg/m³
Photochemical
NO2
1.9 μg/m³
Nitrogen Dioxide
SO2
0.1 μg/m³
Sulfur Dioxide
CO
119 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 4m daylight
Sunrise 6:44 AM
Solar Noon 11:46 AM
Sunset 4:49 PM
Moon
Waxing Crescent • 6%
Moonrise 10:10 AM
Transit 2:34 PM
Moonset 7:00 PM

Best Times for Fishing or Hunting

Major Periods

1:38 AM - 4:08 AM
2:04 PM - 4:34 PM

Minor Periods

9:40 AM - 11:10 AM
6:30 PM - 8:00 PM
Action Rating:
Good Action 3/5
Thursday, November 12, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 43°F
Average Humidity: 70%
Chance of Rain: 0%
Wind: 18.2 mph
UV Index: 2.5

Air Quality

EPA Index 1 • Good
PM2.5
4.1 μg/m³
Good
PM10
4.4 μg/m³
Good
Ozone (O3)
53.9 μg/m³
Photochemical
NO2
3.2 μg/m³
Nitrogen Dioxide
SO2
0.5 μg/m³
Sulfur Dioxide
CO
131.7 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 4m daylight
Sunrise 6:44 AM
Solar Noon 11:46 AM
Sunset 4:49 PM
Moon
Waxing Crescent • 6%
Moonrise 10:10 AM
Transit 2:34 PM
Moonset 7:00 PM

Best Times for Fishing or Hunting

Major Periods

1:38 AM - 4:08 AM
2:04 PM - 4:34 PM

Minor Periods

9:40 AM - 11:10 AM
6:30 PM - 8:00 PM
Action Rating:
Good Action 3/5
Friday, November 13, 2026

Weather Forecast

Conditions: Mainly Sunny
Average Temperature: 36.7°F
Average Humidity: 61%
Chance of Rain: 0%
Wind: 15.7 mph
UV Index: 3.3

Air Quality

EPA Index 1 • Good
PM2.5
1 μg/m³
Good
PM10
1 μg/m³
Good
Ozone (O3)
61 μg/m³
Photochemical
NO2
2.2 μg/m³
Nitrogen Dioxide
SO2
0.2 μg/m³
Sulfur Dioxide
CO
119.3 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 2m daylight
Sunrise 6:45 AM
Solar Noon 11:46 AM
Sunset 4:48 PM
Moon
Waxing Crescent • 13%
Moonrise 10:56 AM
Transit 3:25 PM
Moonset 7:57 PM

Best Times for Fishing or Hunting

Major Periods

2:30 AM - 5:00 AM
2:55 PM - 5:25 PM

Minor Periods

10:26 AM - 11:56 AM
7:27 PM - 8:57 PM
Action Rating:
Fair Action 2/5
Saturday, November 14, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 35.4°F
Average Humidity: 61%
Chance of Rain: 0%
Wind: 7.9 mph
UV Index: 3.4

Air Quality

EPA Index 1 • Good
PM2.5
3.1 μg/m³
Good
PM10
3.2 μg/m³
Good
Ozone (O3)
48.3 μg/m³
Photochemical
NO2
7.8 μg/m³
Nitrogen Dioxide
SO2
0.5 μg/m³
Sulfur Dioxide
CO
142 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 0m daylight
Sunrise 6:46 AM
Solar Noon 11:46 AM
Sunset 4:47 PM
Moon
Waxing Crescent • 21%
Moonrise 11:34 AM
Transit 4:13 PM
Moonset 8:58 PM

Best Times for Fishing or Hunting

Major Periods

3:19 AM - 5:49 AM
3:43 PM - 6:13 PM

Minor Periods

11:04 AM - 12:34 PM
8:28 PM - 9:58 PM
Action Rating:
Fair Action 2/5
Sunday, November 15, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 41°F
Average Humidity: 53%
Chance of Rain: 0%
Wind: 5.1 mph
UV Index: 3.1

Air Quality

EPA Index 1 • Good
PM2.5
9.2 μg/m³
Good
PM10
9.5 μg/m³
Good
Ozone (O3)
36.4 μg/m³
Photochemical
NO2
20.8 μg/m³
Nitrogen Dioxide
SO2
1 μg/m³
Sulfur Dioxide
CO
177.5 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 59m daylight
Sunrise 6:48 AM
Solar Noon 11:46 AM
Sunset 4:46 PM
Moon
Waxing Crescent • 31%
Moonrise 12:07 PM
Transit 5:00 PM
Moonset 10:00 PM

Best Times for Fishing or Hunting

Major Periods

4:07 AM - 6:37 AM
4:30 PM - 7:00 PM

Minor Periods

11:37 AM - 1:07 PM
9:30 PM - 11:00 PM
Action Rating:
Very Good 4/5
Monday, November 16, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 44.1°F
Average Humidity: 56%
Chance of Rain: 0%
Wind: 6.6 mph
UV Index: 3.3

Air Quality

EPA Index 2 • Moderate
PM2.5
11.2 μg/m³
Good
PM10
11.3 μg/m³
Good
Ozone (O3)
42.6 μg/m³
Photochemical
NO2
14.6 μg/m³
Nitrogen Dioxide
SO2
3.6 μg/m³
Sulfur Dioxide
CO
218.8 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 57m daylight
Sunrise 6:49 AM
Solar Noon 11:46 AM
Sunset 4:45 PM
Moon
First Quarter • 42%
Moonrise 12:34 PM
Transit 5:44 PM
Moonset 11:03 PM

Best Times for Fishing or Hunting

Major Periods

4:52 AM - 7:22 AM
5:14 PM - 7:44 PM

Minor Periods

12:04 PM - 1:34 PM
10:33 PM - 12:03 AM
Action Rating:
Good Action 3/5
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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