S
M
T
W
T
F
S
27
73°
63°
28
71°
63°
29
72°
62°
30
74°
59°
1
68°
47°
2
65°
40°
3
71°
51°
4
71°
40°
5
78°
42°
6
86°
52°
7
77°
45°
8
73°
55°
9
82°
63°
10
85°
63°
11
79°
51°
12
64°
41°
13
54°
44°
14
62°
47°
15
58°
41°
16
55°
38°
17
58°
38°
18
61°
40°
19
61°
44°
20
62°
43°
21
52°
30°
22
63°
43°
23
55°
38°
24
61°
42°
25
62°
39°
26
56°
40°
27
58°
34°
28
49°
38°
29
56°
39°
30
50°
38°
31
57°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Sioux Falls
Sioux Falls's October 2026 forecast shows daily high temperatures ranging from 49° to 85°, with overnight lows between 30° and 63°. The average high for October is 61° with an average low of 43°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Sioux Falls. See also: November | December | January.
