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
74°
44°
9
77°
47°
10
90°
65°
11
83°
58°
12
73°
50°
13
62°
43°
14
57°
42°
15
53°
45°
16
53°
33°
17
62°
32°
18
70°
38°
19
66°
35°
20
71°
48°
21
72°
49°
22
76°
57°
23
74°
59°
24
65°
48°
25
58°
40°
26
52°
38°
27
60°
39°
28
62°
42°
29
61°
43°
30
58°
42°
31
55°
39°
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 52° to 76°, with overnight lows between 38° and 59°. The average high for October is 64° with an average low of 45°. 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.
