S
M
T
W
T
F
S
30
65°
50°
31
64°
49°
1
70°
48°
2
71°
51°
3
72°
51°
4
73°
50°
5
74°
42°
6
73°
39°
7
68°
38°
8
58°
41°
9
59°
43°
10
60°
46°
11
64°
47°
12
66°
46°
13
63°
39°
14
58°
38°
15
56°
35°
16
62°
35°
17
57°
33°
18
Hist. Avg.
60°
39°
19
Hist. Avg.
60°
38°
20
Hist. Avg.
59°
38°
21
Hist. Avg.
59°
38°
22
Hist. Avg.
58°
38°
23
Hist. Avg.
58°
37°
24
Hist. Avg.
57°
37°
25
Hist. Avg.
57°
37°
26
Hist. Avg.
57°
36°
27
Hist. Avg.
56°
36°
28
Hist. Avg.
56°
36°
29
Hist. Avg.
55°
35°
30
Hist. Avg.
55°
35°
1
Hist. Avg.
54°
35°
2
Hist. Avg.
54°
34°
3
Hist. Avg.
54°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in South Star
South Star's September 2026 forecast shows daily high temperatures ranging from 56° to 74°, with overnight lows between 33° and 51°. The average high for September is 65° with an average low of 43°. 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 South Star. See also: October | November | December.