S
M
T
W
T
F
S
30
82°
63°
31
82°
63°
1
81°
62°
2
82°
59°
3
78°
58°
4
77°
57°
5
77°
56°
6
81°
58°
7
82°
62°
8
82°
62°
9
81°
61°
10
83°
62°
11
81°
61°
12
82°
62°
13
82°
62°
14
82°
60°
15
79°
59°
16
74°
56°
17
76°
57°
18
70°
54°
19
69°
49°
20
70°
50°
21
77°
50°
22
78°
51°
23
78°
56°
24
77°
48°
25
71°
49°
26
73°
52°
27
75°
55°
28
76°
54°
29
72°
49°
30
67°
47°
1
69°
49°
2
75°
51°
3
75°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in True
True's September 2026 forecast shows daily high temperatures ranging from 67° to 83°, with overnight lows between 47° and 63°. The average high for September is 77° with an average low of 56°. 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 True. See also: October | November | December.