S
M
T
W
T
F
S
28
83°
68°
29
83°
64°
30
82°
66°
1
86°
65°
2
83°
69°
3
85°
69°
4
82°
68°
5
83°
69°
6
87°
70°
7
89°
70°
8
89°
69°
9
90°
70°
10
90°
70°
11
88°
69°
12
89°
70°
13
86°
69°
14
83°
68°
15
84°
69°
16
88°
68°
17
85°
66°
18
82°
65°
19
81°
63°
20
82°
63°
21
82°
64°
22
83°
63°
23
83°
65°
24
84°
66°
25
84°
67°
26
86°
69°
27
84°
62°
28
85°
63°
29
86°
68°
30
88°
65°
31
88°
69°
1
91°
65°
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 81° to 91°, with overnight lows between 62° and 70°. The average high for July is 85° with an average low of 67°. 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.