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Monthly Historical Averages
Sylvan Lake Resort, SD
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April
Average Temperature
High
8°
Feels 6
Low
-2°
Feels -7
Average Precipitation
12 Days
Rain amount
29.5mm
Snow amount
34cm
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Daily Historical Averages
April 2026
S
M
T
W
T
F
S
1
7°
2
12°
3
0°
4
5°
5
11°
6
6°
7
11°
8
17°
9
8°
10
4°
11
4°
12
7°
13
10°
14
12°
15
14°
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Forecast
Wednesday, April 1, 2026
Day
7°
Feels 5
Wind
14 km/h S
Gust
21 km/h
Humidity
52%
P.O.P
40%
Rain
~1 mm
Night
0°
Feels -2
Wind
13 km/h E
Gust
20 km/h
Humidity
93%
P.O.P
40%
Historical Averages
Apr 1
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.