S
M
T
W
T
F
S
30
97°
72°
31
97°
69°
1
99°
68°
2
100°
69°
3
101°
76°
4
89°
76°
5
97°
70°
6
90°
72°
7
N/A
8
97°
73°
9
95°
71°
10
96°
73°
11
99°
73°
12
100°
73°
13
97°
71°
14
96°
70°
15
95°
69°
16
92°
67°
17
93°
66°
18
92°
65°
19
90°
66°
20
88°
63°
21
91°
68°
22
90°
67°
23
89°
67°
24
81°
66°
25
80°
66°
26
82°
65°
27
83°
66°
28
83°
66°
29
84°
65°
30
84°
60°
1
79°
55°
2
78°
55°
3
78°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Stonewall
Stonewall's September 2026 forecast shows daily high temperatures ranging from 78° to 100°, with overnight lows between 54° and 73°. The average high for September is 89° 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 Stonewall. See also: October | November | December.
