S
M
T
W
T
F
S
27
70°
53°
28
65°
52°
29
73°
48°
30
73°
42°
1
65°
43°
2
64°
48°
3
62°
44°
4
60°
42°
5
63°
49°
6
69°
48°
7
66°
43°
8
67°
47°
9
69°
49°
10
59°
36°
11
59°
44°
12
64°
42°
13
56°
43°
14
63°
43°
15
64°
42°
16
62°
43°
17
61°
42°
18
62°
40°
19
56°
41°
20
61°
39°
21
54°
38°
22
58°
40°
23
60°
40°
24
58°
38°
25
59°
36°
26
45°
36°
27
53°
38°
28
57°
36°
29
53°
36°
30
54°
35°
31
51°
34°
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 45° to 73°, with overnight lows between 34° and 53°. The average high for October is 61° with an average low of 42°. 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.
