S
M
T
W
T
F
S
30
90°
69°
31
91°
72°
1
89°
71°
2
89°
66°
3
88°
64°
4
86°
64°
5
87°
66°
6
88°
69°
7
92°
72°
8
94°
72°
9
94°
71°
10
93°
70°
11
91°
70°
12
89°
71°
13
92°
64°
14
92°
62°
15
86°
62°
16
88°
63°
17
86°
62°
18
87°
63°
19
88°
62°
20
89°
65°
21
91°
66°
22
87°
67°
23
85°
67°
24
84°
66°
25
83°
65°
26
86°
65°
27
88°
63°
28
88°
64°
29
87°
64°
30
88°
63°
1
88°
63°
2
87°
57°
3
89°
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 83° to 94°, with overnight lows between 55° and 72°. 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 Sulphur Springs. See also: October | November | December.