Water Temperature of the Illinois River in La Grange, IL

Current Water Temperature

68.5°F 20.3°C
Cool Brisk & Refreshing
68.5°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: Friday, November 6, 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

39.8°F
Clear
Conditions: Clear
Humidity: 73%
Feels Like: 36.3°F
Wind: NNW 4.9 mph
Wind Gusts: 7.9 mph
Pressure: 30.27 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 0

Weather Forecast

Sunny
Fri
H: 52°F
L: 38°F
Sunny
Sat
H: 53°F
L: 34°F
Sunny
Sun
H: 64°F
L: 38°F

Air Quality

EPA Index 1 • Good

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

PM2.5
3.5 μg/m³
Good
PM10
3.6 μg/m³
Good
Ozone (O3)
43 μg/m³
Photochemical
NO2
7.2 μg/m³
Nitrogen Dioxide
SO2
0.4 μg/m³
Sulfur Dioxide
CO
153 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 17m daylight
Sunrise 6:37 AM
Solar Noon 11:45 AM
Sunset 4:54 PM
Moon
Waning Crescent • 5%
Moonrise 3:58 AM
Transit 9:42 AM
Moonset 3:18 PM

Best Times for Fishing or Hunting

Major Periods

9:12 AM - 11:42 AM
9:34 PM - 12:04 AM

Minor Periods

3:28 AM - 4:58 AM
2:48 PM - 4:18 PM
Action Rating:
Fair Action 2/5

Freeze Warning issued November 6 at 12:31PM CST until November 7 at 8:00AM CST by NWS St Louis MO

Effective: Fri November 6, 2026, 12:31 PM
Expires: Sat November 7, 2026, 3:45 AM

* WHAT...Sub-freezing temperatures as low as 28 expected. * WHERE...Portions of south central, southwest, and west central Illinois and central, east central, northeast, and southeast Missouri. * WHEN...From midnight tonight to 8 AM CST Saturday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
Friday, November 6, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 46.5°F
Average Humidity: 61%
Chance of Rain: 7%
Wind: 12.5 mph
UV Index: 2.8

Astronomical

Sun
10h 17m daylight
Sunrise 6:37 AM
Solar Noon 11:45 AM
Sunset 4:54 PM
Moon
Waning Crescent • 5%
Moonrise 3:58 AM
Transit 9:42 AM
Moonset 3:18 PM

Best Times for Fishing or Hunting

Major Periods

9:12 AM - 11:42 AM
9:34 PM - 12:04 AM

Minor Periods

3:28 AM - 4:58 AM
2:48 PM - 4:18 PM
Action Rating:
Fair Action 2/5
Saturday, November 7, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 42.6°F
Average Humidity: 61%
Chance of Rain: 6%
Wind: 6.7 mph
UV Index: 2.6

Astronomical

Sun
10h 15m daylight
Sunrise 6:38 AM
Solar Noon 11:45 AM
Sunset 4:53 PM
Moon
Waning Crescent • 1%
Moonrise 5:03 AM
Transit 10:27 AM
Moonset 3:42 PM

Best Times for Fishing or Hunting

Major Periods

9:57 AM - 12:27 PM
10:20 PM - 12:50 AM

Minor Periods

4:33 AM - 6:03 AM
3:12 PM - 4:42 PM
Action Rating:
Good Action 3/5
Sunday, November 8, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 49.4°F
Average Humidity: 65%
Chance of Rain: 5%
Wind: 13 mph
UV Index: 2.1

Astronomical

Sun
10h 13m daylight
Sunrise 6:40 AM
Solar Noon 11:45 AM
Sunset 4:52 PM
Moon
New • 0%
Moonrise 6:09 AM
Transit 11:13 AM
Moonset 4:11 PM

Best Times for Fishing or Hunting

Major Periods

10:43 AM - 1:13 PM
11:07 PM - 1:37 AM

Minor Periods

5:39 AM - 7:09 AM
3:41 PM - 5:11 PM
Action Rating:
Peak Action 5/5
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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