S
M
T
W
T
F
S
28
82°
57°
29
79°
53°
30
80°
55°
1
84°
59°
2
84°
61°
3
85°
64°
4
87°
63°
5
87°
62°
6
80°
57°
7
80°
62°
8
82°
62°
9
83°
63°
10
80°
62°
11
78°
62°
12
76°
59°
13
78°
61°
14
81°
63°
15
84°
63°
16
85°
64°
17
85°
64°
18
86°
65°
19
87°
64°
20
81°
63°
21
82°
64°
22
86°
65°
23
86°
65°
24
85°
64°
25
84°
64°
26
79°
63°
27
79°
64°
28
77°
64°
29
85°
65°
30
83°
61°
31
75°
57°
1
76°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Bismarck
Bismarck's July 2026 forecast shows daily high temperatures ranging from 75° to 87°, with overnight lows between 53° and 65°. The average high for July is 82° with an average low of 62°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Bismarck. See also: August | September | October.