S
M
T
W
T
F
S
30
100°
74°
31
100°
74°
1
99°
73°
2
95°
74°
3
96°
76°
4
98°
72°
5
98°
74°
6
99°
71°
7
99°
75°
8
96°
75°
9
96°
74°
10
96°
74°
11
96°
75°
12
98°
70°
13
97°
71°
14
94°
70°
15
92°
67°
16
91°
68°
17
92°
68°
18
92°
67°
19
90°
63°
20
87°
61°
21
91°
67°
22
91°
67°
23
90°
66°
24
90°
66°
25
89°
65°
26
89°
65°
27
88°
64°
28
88°
65°
29
87°
65°
30
84°
62°
1
80°
55°
2
76°
53°
3
76°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Big Sandy
Big Sandy's September 2026 forecast shows daily high temperatures ranging from 76° to 99°, with overnight lows between 52° and 75°. The average high for September is 90° with an average low of 66°. 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 Big Sandy. See also: October | November | December.
