S
M
T
W
T
F
S
28
74°
55°
29
72°
52°
30
90°
55°
1
85°
56°
2
84°
52°
3
71°
50°
4
65°
53°
5
72°
51°
6
77°
50°
7
70°
50°
8
69°
49°
9
63°
49°
10
79°
54°
11
80°
64°
12
89°
72°
13
90°
73°
14
82°
61°
15
75°
62°
16
73°
59°
17
72°
60°
18
71°
58°
19
69°
55°
20
71°
59°
21
76°
63°
22
75°
60°
23
73°
62°
24
72°
56°
25
78°
62°
26
77°
61°
27
70°
59°
28
68°
58°
29
69°
60°
30
70°
59°
31
69°
57°
1
71°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Mandan
Mandan's July 2026 forecast shows daily high temperatures ranging from 68° to 90°, with overnight lows between 55° and 73°. The average high for July is 75° with an average low of 61°. 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 Mandan. See also: August | September | October.