S
M
T
W
T
F
S
30
97°
55°
31
91°
49°
1
82°
56°
2
94°
63°
3
98°
60°
4
97°
55°
5
100°
62°
6
93°
64°
7
96°
69°
8
89°
55°
9
84°
51°
10
94°
51°
11
90°
46°
12
74°
54°
13
66°
58°
14
81°
50°
15
67°
52°
16
76°
53°
17
81°
57°
18
80°
54°
19
80°
53°
20
79°
53°
21
83°
56°
22
79°
51°
23
78°
55°
24
77°
47°
25
84°
54°
26
81°
55°
27
83°
56°
28
84°
54°
29
72°
52°
30
77°
48°
1
76°
52°
2
79°
52°
3
79°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cactus Flat
Cactus Flat's September 2026 forecast shows daily high temperatures ranging from 66° to 90°, with overnight lows between 46° and 58°. The average high for September is 79° with an average low of 53°. 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 Flat. See also: October | November | December.