S
M
T
W
T
F
S
27
80°
58°
28
81°
57°
29
80°
59°
30
79°
57°
1
78°
53°
2
78°
57°
3
79°
57°
4
79°
56°
5
78°
57°
6
76°
56°
7
76°
57°
8
77°
56°
9
76°
56°
10
75°
53°
11
75°
47°
12
63°
42°
13
62°
41°
14
61°
40°
15
60°
40°
16
61°
45°
17
62°
43°
18
60°
38°
19
59°
38°
20
59°
43°
21
60°
45°
22
59°
49°
23
74°
43°
24
72°
42°
25
65°
41°
26
63°
36°
27
56°
35°
28
55°
42°
29
58°
46°
30
57°
37°
31
63°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Bismarck
Bismarck's October 2026 forecast shows daily high temperatures ranging from 55° to 81°, with overnight lows between 32° and 59°. The average high for October is 68° with an average low of 47°. 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 Bismarck. See also: November | December | January.