S
M
T
W
T
F
S
30
89°
66°
31
90°
69°
1
88°
67°
2
88°
63°
3
89°
61°
4
86°
61°
5
87°
63°
6
87°
66°
7
91°
69°
8
93°
69°
9
93°
68°
10
92°
67°
11
90°
67°
12
88°
68°
13
91°
61°
14
91°
60°
15
85°
61°
16
86°
60°
17
85°
59°
18
86°
60°
19
87°
59°
20
88°
62°
21
90°
64°
22
86°
64°
23
83°
63°
24
83°
64°
25
82°
63°
26
84°
63°
27
87°
61°
28
87°
62°
29
86°
62°
30
87°
61°
1
87°
61°
2
86°
55°
3
88°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grand Saline
Grand Saline's September 2026 forecast shows daily high temperatures ranging from 82° to 93°, with overnight lows between 53° and 69°. The average high for September is 88° with an average low of 63°. 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 Grand Saline. See also: October | November | December.
