S
M
T
W
T
F
S
30
101°
77°
31
102°
78°
1
101°
77°
2
97°
74°
3
91°
73°
4
96°
76°
5
98°
74°
6
100°
75°
7
98°
73°
8
95°
75°
9
96°
74°
10
99°
75°
11
97°
74°
12
96°
72°
13
92°
74°
14
92°
70°
15
89°
66°
16
93°
70°
17
92°
71°
18
86°
67°
19
89°
70°
20
91°
70°
21
92°
69°
22
91°
69°
23
91°
70°
24
90°
69°
25
91°
68°
26
90°
65°
27
82°
59°
28
80°
59°
29
80°
58°
30
85°
62°
1
88°
64°
2
88°
59°
3
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sulphur Springs
Sulphur Springs's September 2026 forecast shows daily high temperatures ranging from 78° to 100°, with overnight lows between 55° and 76°. The average high for September is 91° with an average low of 69°. 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 Sulphur Springs. See also: October | November | December.