S
M
T
W
T
F
S
30
96°
74°
31
96°
73°
1
95°
73°
2
95°
72°
3
94°
73°
4
94°
73°
5
93°
72°
6
94°
72°
7
94°
72°
8
93°
71°
9
94°
71°
10
93°
70°
11
94°
71°
12
94°
72°
13
93°
71°
14
94°
71°
15
94°
70°
16
93°
70°
17
92°
69°
18
92°
68°
19
90°
67°
20
90°
68°
21
88°
58°
22
86°
59°
23
86°
61°
24
89°
64°
25
90°
65°
26
91°
64°
27
91°
62°
28
82°
64°
29
88°
66°
30
90°
62°
1
90°
58°
2
79°
59°
3
77°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Big Spring
Big Spring's September 2026 forecast shows daily high temperatures ranging from 77° to 96°, with overnight lows between 58° and 74°. The average high for September is 91° with an average low of 68°. 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 Spring. See also: October | November | December.