S
M
T
W
T
F
S
30
82°
65°
31
84°
64°
1
86°
63°
2
78°
60°
3
77°
61°
4
79°
62°
5
83°
62°
6
85°
63°
7
85°
64°
8
86°
64°
9
86°
63°
10
84°
62°
11
83°
63°
12
85°
64°
13
85°
63°
14
80°
52°
15
73°
54°
16
75°
58°
17
76°
57°
18
72°
51°
19
73°
49°
20
74°
51°
21
78°
56°
22
80°
57°
23
80°
48°
24
71°
50°
25
73°
53°
26
77°
57°
27
76°
55°
28
78°
47°
29
69°
45°
30
68°
47°
1
68°
52°
2
75°
51°
3
76°
53°
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 68° to 86°, with overnight lows between 45° and 65°. The average high for September is 78° with an average low of 57°. 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.