S
M
T
W
T
F
S
30
88°
70°
31
92°
67°
1
94°
69°
2
96°
72°
3
97°
72°
4
96°
73°
5
97°
68°
6
88°
68°
7
80°
64°
8
83°
62°
9
88°
66°
10
91°
67°
11
89°
63°
12
84°
64°
13
87°
65°
14
88°
66°
15
89°
65°
16
90°
64°
17
85°
65°
18
84°
58°
19
77°
62°
20
77°
63°
21
85°
63°
22
84°
62°
23
83°
62°
24
82°
61°
25
83°
61°
26
83°
60°
27
84°
61°
28
83°
61°
29
82°
60°
30
82°
59°
1
81°
59°
2
81°
58°
3
80°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Startex
Startex's September 2026 forecast shows daily high temperatures ranging from 77° to 97°, with overnight lows between 56° and 68°. The average high for September is 84° with an average low of 63°. 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 Startex. See also: October | November | December.