S
M
T
W
T
F
S
30
88°
68°
31
87°
69°
1
88°
71°
2
90°
70°
3
86°
67°
4
85°
66°
5
85°
65°
6
86°
65°
7
86°
66°
8
88°
67°
9
90°
70°
10
89°
66°
11
90°
65°
12
90°
69°
13
89°
68°
14
89°
69°
15
88°
69°
16
88°
68°
17
89°
66°
18
87°
67°
19
86°
66°
20
86°
67°
21
85°
66°
22
82°
65°
23
82°
61°
24
Hist. Avg.
84°
63°
25
Hist. Avg.
83°
62°
26
Hist. Avg.
83°
62°
27
Hist. Avg.
83°
61°
28
Hist. Avg.
82°
61°
29
Hist. Avg.
82°
61°
30
Hist. Avg.
82°
60°
1
Hist. Avg.
82°
60°
2
Hist. Avg.
81°
59°
3
Hist. Avg.
81°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Gaston
Gaston's September 2026 forecast shows daily high temperatures ranging from 82° to 90°, with overnight lows between 61° and 71°. The average high for September is 87° with an average low of 67°. 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 Gaston. See also: October | November | December.