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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.

South Island Lake , SD
GPS: 43.790, -97.131 Google Map · LakeMonster Map
Views: 25
Favorited: 0
~ 1066 miles away - (1308)
Today's Forecast Oct 25, 2021
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South Island Lake's current water temperature is 62°F. Today's forecast is: , with a high around 47°F and a low around 40°F. Winds are out of the E at 12 mph with gusts of 32 mph.

Current Conditions
62°F
Water estimate as of
Oct 12, 2021
47° 40° F
Air
NE 12 - 32 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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   Your
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Latest satelite temp: 62°F
62°F
  Warning: Greater than 10% difference.




Forecast as of Oct 25, 2021
gust  
5  
6+  
11+  
16+  
21+
Sunday
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47° 36°
E 12-32 mph

Possible light rain until evening.
Monday
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53° 38°
ESE 11-34 mph
6
8
10
12
2
4
6
8

Windy overnight.
Tuesday
image
54° 45°
SE 19-44 mph
6
8
10
12
2
4
6
8

Rain overnight.
Wednesday
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53° 41°
NW 11-32 mph
6
8
10
12
2
4
6
8

Rain until evening.
Thursday
image
54° 37°
NW 16-39 mph
6
8
10
12
2
4
6
8

Windy overnight.
Friday
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54° 34°
NNW 10-39 mph
6
8
10
12
2
4
6
8

Clear throughout the day.
Saturday
image
59° 38°
SSE 13-34 mph
6
8
10
12
2
4
6
8

Clear throughout the day.
Sunday
image
48° 28°
NW 16-31 mph
6
8
10
12
2
4
6
8

Clear throughout the day.

Latest Satellite Imagery
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Description
South Island lake is a popular fishing lake on the border of Minnehaha and McCook counties north of Sioux Falls. This lake is known for perch, walleye, and crappie fishing, and is a particularly popular destination for ice fishing. Boat ramp is available on the north side of the lake.

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Attributes
Acres 0
Base Elevation 1732 Ft

Pressure
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Recent Water Temperatures
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Nearby Lakes
Water: 62° H: 47° L: 40°
Wind 12-32 mph
South Island Lake Possible light rain until evening. 0 miles from South Island Lake Colton, SD
Water: 63° H: 47° L: 40°
Wind 12-32 mph
Diamond Lake Possible light rain until evening. 7 miles from South Island Lake Colton, SD
Water: 62° H: 46° L: 40°
Wind 12-32 mph
Twin Lakes Possible light rain until evening. 8 miles from South Island Lake Humboldt, SD
Water: 62° H: 48° L: 40°
Wind 12-32 mph
Clear Lake Possible light rain until evening. 11 miles from South Island Lake Colton, SD
Water: 64° H: 53° L: 35°
Wind 10-33 mph
Lost Lake Windy overnight. 14 miles from South Island Lake Humboldt, SD
Water: 62° H: 53° L: 35°
Wind 10-33 mph
Beaver Lake Windy overnight. 19 miles from South Island Lake Humboldt, SD
Water: 61° H: 48° L: 39°
Wind 12-32 mph
Long Lake Possible drizzle in the afternoon and evening. 19 miles from South Island Lake Madison, SD
Water: 63° H: 47° L: 40°
Wind 12-32 mph
Scott's Slough Possible light rain until evening. 20 miles from South Island Lake Hartford, SD
Water: 61° H: 48° L: 39°
Wind 12-32 mph
Brandt Lake Possible drizzle until evening. 20 miles from South Island Lake Chester, SD
Water: 61° H: 53° L: 34°
Wind 11-34 mph
Lake Madison Windy overnight. 21 miles from South Island Lake Madison, SD
Water: 61° H: 53° L: 34°
Wind 10-33 mph
Brant Lake Windy overnight. 21 miles from South Island Lake Brant Lake, SD
Water: 59° H: 53° L: 35°
Wind 11-35 mph
Henry WPA Windy overnight. 21 miles from South Island Lake Madison, SD
Water: 64° H: 54° L: 36°
Wind 10-34 mph
East Vermillion Lake Windy overnight. 22 miles from South Island Lake Canistota, SD
Water: 68° H: 49° L: 39°
Wind 13-32 mph
Herman Slough Possible drizzle in the afternoon and evening. 22 miles from South Island Lake Madison, SD
Water: 58° H: 53° L: 34°
Wind 11-35 mph
Lake Herman Windy overnight. 23 miles from South Island Lake Madison, SD
Water: 65° H: 53° L: 35°
Wind 10-33 mph
Loss Lake Windy overnight. 24 miles from South Island Lake Humboldt, SD
Water: 0° H: 53° L: 35°
Wind 10-32 mph
Grass Lake Windy overnight. 24 miles from South Island Lake Humboldt, SD
Water: 63° H: 53° L: 35°
Wind 10-32 mph
Wall Lake Windy overnight. 32 miles from South Island Lake Wall Lake, SD
Water: 61° H: 47° L: 40°
Wind 11-33 mph
Gross Lake Possible light rain until evening. 33 miles from South Island Lake Salem, SD
Water: 62° H: 47° L: 41°
Wind 11-33 mph
Forsch Lake Possible light rain until evening. 34 miles from South Island Lake Salem, SD