S
M
T
W
T
F
S
30
98°
64°
31
98°
65°
1
99°
68°
2
100°
70°
3
100°
67°
4
99°
62°
5
98°
64°
6
97°
63°
7
94°
61°
8
93°
60°
9
92°
61°
10
92°
62°
11
93°
61°
12
96°
60°
13
96°
61°
14
95°
61°
15
95°
60°
16
93°
59°
17
93°
61°
18
92°
62°
19
93°
57°
20
93°
55°
21
92°
56°
22
93°
63°
23
92°
62°
24
87°
61°
25
86°
60°
26
87°
55°
27
86°
57°
28
88°
56°
29
88°
58°
30
86°
53°
1
Hist. Avg.
88°
59°
2
Hist. Avg.
88°
59°
3
Hist. Avg.
88°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cactus Flats
Cactus Flats's September 2026 forecast shows daily high temperatures ranging from 86° to 100°, with overnight lows between 53° and 70°. The average high for September is 93° 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 September weather will actually feel in Cactus Flats. See also: October | November | December.