S
M
T
W
T
F
S
28
84°
57°
29
83°
57°
30
82°
52°
1
85°
55°
2
81°
57°
3
82°
63°
4
88°
58°
5
94°
61°
6
87°
64°
7
71°
58°
8
78°
56°
9
90°
60°
10
91°
63°
11
101°
66°
12
103°
69°
13
105°
70°
14
98°
69°
15
97°
68°
16
99°
67°
17
89°
63°
18
93°
66°
19
95°
66°
20
90°
58°
21
80°
59°
22
82°
61°
23
83°
62°
24
82°
61°
25
80°
61°
26
78°
60°
27
84°
61°
28
82°
59°
29
77°
62°
30
77°
63°
31
77°
64°
1
77°
64°
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 77° to 99°, with overnight lows between 58° and 67°. The average high for July is 84° 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.