S
M
T
W
T
F
S
30
87°
63°
31
88°
64°
1
89°
63°
2
88°
63°
3
87°
62°
4
86°
63°
5
87°
62°
6
87°
53°
7
80°
52°
8
76°
56°
9
78°
59°
10
74°
60°
11
78°
60°
12
83°
60°
13
85°
49°
14
78°
49°
15
72°
50°
16
70°
49°
17
71°
49°
18
73°
48°
19
79°
46°
20
71°
47°
21
71°
55°
22
75°
55°
23
80°
54°
24
79°
56°
25
78°
55°
26
80°
55°
27
81°
54°
28
77°
50°
29
71°
49°
30
74°
50°
1
75°
48°
2
76°
53°
3
66°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Garland
Garland's September 2026 forecast shows daily high temperatures ranging from 66° to 89°, with overnight lows between 39° and 64°. The average high for September is 79° with an average low of 54°. 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 Garland. See also: October | November | December.