S
M
T
W
T
F
S
26
115°
99°
27
113°
92°
28
109°
91°
29
111°
92°
30
115°
90°
31
117°
88°
1
119°
91°
2
120°
91°
3
118°
91°
4
116°
90°
5
114°
90°
6
114°
90°
7
115°
90°
8
114°
88°
9
113°
89°
10
111°
85°
11
105°
84°
12
108°
84°
13
111°
85°
14
110°
81°
15
102°
77°
16
102°
76°
17
105°
79°
18
104°
77°
19
103°
77°
20
104°
78°
21
104°
77°
22
107°
80°
23
110°
82°
24
111°
82°
25
109°
81°
26
108°
82°
27
108°
82°
28
107°
78°
29
102°
75°
30
101°
74°
31
102°
75°
1
103°
76°
2
101°
74°
3
101°
73°
4
100°
73°
5
99°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fort Mohave
Fort Mohave's August 2026 forecast shows daily high temperatures ranging from 99° to 120°, with overnight lows between 71° and 91°. The average high for August is 108° with an average low of 81°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Fort Mohave. See also: September | October | November.