S
M
T
W
T
F
S
30
108°
88°
31
104°
86°
1
102°
82°
2
102°
81°
3
100°
75°
4
102°
75°
5
102°
75°
6
91°
81°
7
99°
77°
8
108°
82°
9
111°
88°
10
113°
90°
11
109°
91°
12
106°
88°
13
106°
88°
14
106°
84°
15
100°
84°
16
100°
75°
17
100°
77°
18
105°
75°
19
103°
73°
20
103°
74°
21
102°
73°
22
101°
73°
23
105°
76°
24
103°
75°
25
103°
76°
26
101°
72°
27
100°
73°
28
99°
72°
29
98°
67°
30
95°
67°
1
94°
68°
2
97°
66°
3
96°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fort Mohave
Fort Mohave's September 2026 forecast shows daily high temperatures ranging from 94° to 105°, with overnight lows between 66° and 77°. The average high for September is 100° with an average low of 72°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Fort Mohave. See also: October | November | December.