S
M
T
W
T
F
S
30
85°
53°
31
84°
57°
1
84°
54°
2
83°
54°
3
84°
50°
4
84°
49°
5
82°
47°
6
74°
46°
7
74°
47°
8
73°
54°
9
72°
48°
10
73°
51°
11
74°
44°
12
72°
50°
13
73°
53°
14
73°
50°
15
71°
47°
16
70°
45°
17
72°
47°
18
73°
50°
19
79°
47°
20
79°
46°
21
78°
43°
22
69°
41°
23
68°
44°
24
70°
45°
25
68°
41°
26
68°
42°
27
69°
45°
28
68°
45°
29
67°
42°
30
66°
41°
1
66°
46°
2
69°
49°
3
73°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Gaston
Gaston's September 2026 forecast shows daily high temperatures ranging from 66° to 85°, with overnight lows between 41° and 57°. The average high for September is 74° 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 Gaston. See also: October | November | December.