S
M
T
W
T
F
S
30
72°
62°
31
78°
62°
1
78°
60°
2
79°
54°
3
76°
57°
4
78°
59°
5
77°
57°
6
76°
57°
7
69°
59°
8
70°
54°
9
71°
51°
10
67°
54°
11
68°
57°
12
75°
51°
13
73°
57°
14
74°
56°
15
73°
59°
16
74°
56°
17
Hist. Avg.
70°
54°
18
Hist. Avg.
70°
54°
19
Hist. Avg.
69°
53°
20
Hist. Avg.
69°
53°
21
Hist. Avg.
69°
52°
22
Hist. Avg.
68°
52°
23
Hist. Avg.
68°
52°
24
Hist. Avg.
68°
51°
25
Hist. Avg.
67°
51°
26
Hist. Avg.
67°
51°
27
Hist. Avg.
67°
50°
28
Hist. Avg.
66°
50°
29
Hist. Avg.
66°
50°
30
Hist. Avg.
65°
49°
1
Hist. Avg.
65°
49°
2
Hist. Avg.
65°
49°
3
Hist. Avg.
64°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Annex
Annex's September 2026 forecast shows daily high temperatures ranging from 67° to 79°, with overnight lows between 51° and 62°. The average high for September is 74° with an average low of 57°. 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 Annex. See also: October | November | December.