S
M
T
W
T
F
S
30
76°
53°
31
79°
56°
1
82°
52°
2
75°
48°
3
72°
47°
4
75°
49°
5
80°
53°
6
80°
53°
7
79°
48°
8
70°
45°
9
70°
44°
10
71°
45°
11
75°
45°
12
74°
50°
13
73°
52°
14
68°
54°
15
67°
50°
16
67°
51°
17
68°
49°
18
66°
50°
19
65°
43°
20
67°
42°
21
66°
39°
22
64°
40°
23
65°
39°
24
66°
41°
25
72°
45°
26
67°
42°
27
68°
39°
28
Hist. Avg.
65°
43°
29
Hist. Avg.
65°
42°
30
Hist. Avg.
64°
42°
1
Hist. Avg.
64°
42°
2
Hist. Avg.
63°
42°
3
Hist. Avg.
63°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Dallas
Dallas's September 2026 forecast shows daily high temperatures ranging from 64° to 82°, with overnight lows between 39° and 56°. The average high for September is 71° with an average low of 47°. 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 Dallas. See also: October | November | December.
