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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Flandreau, SD
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May
Average Temperature
High
20°
Feels 20
Low
8°
Feels 7
Average Precipitation
10 Days
Rain amount
63.7mm
Snow amount
0.1cm
Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
18°
22
14°
23
19°
24
26°
25
28°
26
28°
27
21°
28
24°
29
25°
30
25°
31
25°
Forecast
Thursday, May 21, 2026
Day
18°
Feels 18
Wind
27 km/h SE
Gust
41 km/h
Humidity
39%
P.O.P
20%
Night
9°
Feels 6
Wind
29 km/h SE
Gust
44 km/h
Humidity
81%
P.O.P
30%
Historical Averages
May 21
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.