S
M
T
W
T
F
S
30
79°
64°
31
88°
67°
1
86°
59°
2
85°
64°
3
82°
68°
4
86°
69°
5
82°
67°
6
84°
67°
7
82°
64°
8
80°
65°
9
81°
57°
10
78°
50°
11
83°
58°
12
74°
54°
13
70°
44°
14
67°
42°
15
71°
49°
16
74°
44°
17
70°
54°
18
63°
54°
19
63°
57°
20
68°
52°
21
63°
47°
22
66°
45°
23
70°
40°
24
69°
50°
25
73°
50°
26
73°
52°
27
69°
53°
28
76°
53°
29
69°
58°
30
72°
57°
1
63°
46°
2
62°
35°
3
69°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dallas
Dallas's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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.
