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Hourly
7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Yankton, SD
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September
Average Temperature
High
25°
Feels 25
Low
12°
Feels 11
Average Precipitation
9 Days
Rain amount
68.9mm
Snow amount
0.1cm
Content continues below
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
23°
14
27°
15
23°
16
18°
17
23°
18
24°
19
23°
20
24°
21
24°
22
24°
23
24°
24
25°
25
26°
26
25°
27
24°
28
29
30
Forecast
Sunday, September 13, 2026
Day
23°
Feels 23
Wind
19 km/h NE
Gust
29 km/h
Humidity
44%
P.O.P
40%
Rain
~1 mm
Night
15°
Feels 13
Wind
28 km/h SE
Gust
42 km/h
Humidity
88%
P.O.P
70%
Rain
<1 mm
Historical Averages
Sep 13
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.