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LakeMonster.com is a BETA data site created to help lake enthusiasts of all kinds by combining the latest satellite imagery, weather data, lake staff information, and community member reports to communicate current lake conditions.
Check the map below for point temperatures. Drought conditions and low water levels are affecting smaller lake temperature accuracy. We are working to resolve the issue. Please help others by submitting your observed temperatures.

Lake Decatur , IL
GPS: 39.827, -88.928 Google Map · LakeMonster Map
Views: 388
Favorited: 0
~ 612 miles away - (3344)
Today's Forecast Dec 06, 2021
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Lake Decatur's current water temperature is 35°F. Today's forecast is: Light rain throughout the day., with a high around 56°F and a low around 30°F. Winds are out of the SSE at 13 mph with gusts of 33 mph.

Current Conditions
35°F
Water estimate as of
Dec 04, 2021
56° 30° F
Air
SSW 13 - 33 gust
Wind
Temps are estimates of the surface temp acquired throughout the lake. Values are generally within a few degrees, but may be inaccurate due to factors including cloud cover, land interference, water levels, and input data quality/accuracy. If a temp is inaccurate, please contact us. Consider helping us improve our accuracy by creating an account and submitting your observed water temps in the section below.


Community Water Temps
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Latest satelite temp: 35°F
35°F
  Warning: Greater than 10% difference.




Forecast as of Dec 06, 2021
gust  
5  
6+  
11+  
16+  
21+
Saturday
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56° 31°
SSE 13-33 mph

Light rain throughout the day.
Sunday
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37° 19°
NW 17-37 mph

Clear throughout the day.
Monday
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30° 22°
SE 6-18 mph

Overcast throughout the day.
Tuesday
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42° 27°
S 7-20 mph

Partly cloudy throughout the day.
Wednesday
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53° 36°
SSE 10-37 mph

Overcast throughout the day.
Thursday
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61° 45°
S 12-44 mph

Possible light rain overnight.
Friday
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46° 22°
NW 13-44 mph

Rain in the morning and afternoon.
Saturday
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49° 26°
SSW 7-17 mph

Clear throughout the day.

Latest Satellite Imagery
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Description
Lake Decatur is a 2,800-acre reservoir located in the city of Decatur, Illinois, east of downtown. Lake Decatur has a watershed of 925 square miles reaching into parts of 7 counties. Anglers can catch Walleye, White Bass, Crappie, Bass, Catfish, Hybrid Stripers, and Sunfish. Ice fishing during winter at Decatur Lake can often produce nice catches.

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Attributes
Acres 2,875
Base Elevation 0 Ft

Pressure
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Nearby Lakes
Water: 42° H: 55° L: 31°
Wind 14-36 mph
Clinton Lake Possible light rain until evening. 37 miles from Lake Decatur Dewitt, IL
Water: 37° H: 58° L: 32°
Wind 13-34 mph
Lake Shelbyville Light rain throughout the day. 42 miles from Lake Decatur Shelbyville, IL
Water: 35° H: 57° L: 32°
Wind 13-34 mph
Taylorville Lake Light rain until evening. 44 miles from Lake Decatur Taylorville, IL
Water: 38° H: 57° L: 32°
Wind 12-34 mph
Sangchris Lake Possible light rain in the morning and afternoon. 50 miles from Lake Decatur Rochester, IL
Water: 36° H: 57° L: 32°
Wind 12-33 mph
Lake Springfield Possible light rain in the morning. 60 miles from Lake Decatur Springfield, IL
Water: 35° H: 58° L: 32°
Wind 13-32 mph
Lake Mattoon Rain throughout the day. 65 miles from Lake Decatur Mattoon, IL
Water: 36° H: 59° L: 33°
Wind 13-34 mph
Lake Sara Rain throughout the day. 80 miles from Lake Decatur Effingham, IL
Water: 37° H: 57° L: 32°
Wind 13-34 mph
Lake Petersburg Possible light rain in the morning. 81 miles from Lake Decatur Lake Petersburg, IL
Water: 42° H: 55° L: 29°
Wind 13-32 mph
Homer Lake Rain throughout the day. 84 miles from Lake Decatur Homer, IL
Water: 35° H: 59° L: 32°
Wind 12-34 mph
Lake Glenn Shoals Possible light rain until evening. 85 miles from Lake Decatur Hillsboro, IL
Water: 36° H: 53° L: 32°
Wind 13-35 mph
Evergreen Lake Possible light rain until evening. 90 miles from Lake Decatur Bloomington, IL
Water: 36° H: 58° L: 33°
Wind 12-34 mph
Lake Lou Yaeger Possible light rain in the morning and afternoon. 91 miles from Lake Decatur Litchfield, IL
Water: 36° H: 58° L: 33°
Wind 12-37 mph
Vandalia Lake Possible light rain throughout the day. 93 miles from Lake Decatur Vandalia, IL
Water: 36° H: 59° L: 33°
Wind 13-36 mph
Otter Lake Overcast throughout the day. 94 miles from Lake Decatur Girard, IL
Water: 36° H: 59° L: 33°
Wind 12-35 mph
Coffeen Lake Possible light rain until evening. 95 miles from Lake Decatur Coffeen, IL
Water: 35° H: 59° L: 34°
Wind 12-33 mph
Lake Carlinville Overcast throughout the day. 102 miles from Lake Decatur Carlinville, IL
Water: 37° H: 59° L: 33°
Wind 12-35 mph
Governor Bond Lake Possible light rain throughout the day. 108 miles from Lake Decatur Greenville, IL
Water: 35° H: 59° L: 33°
Wind 12-33 mph
Lake Jacksonville Overcast throughout the day. 109 miles from Lake Decatur Jacksonville, IL
Water: 35° H: 55° L: 31°
Wind 13-32 mph
Lake Mingo Rain until evening. 111 miles from Lake Decatur Danville, IL
Water: 38° H: 60° L: 30°
Wind 12-35 mph
Lincoln Trail Lake Rain throughout the day. 117 miles from Lake Decatur Marshall, IL