S
M
T
W
T
F
S
30
98°
78°
31
97°
77°
1
82°
77°
2
89°
78°
3
89°
76°
4
91°
75°
5
92°
74°
6
93°
74°
7
95°
75°
8
91°
75°
9
91°
77°
10
91°
75°
11
90°
76°
12
92°
76°
13
91°
76°
14
94°
75°
15
94°
76°
16
95°
77°
17
94°
78°
18
92°
70°
19
92°
71°
20
94°
74°
21
95°
73°
22
97°
73°
23
95°
72°
24
93°
75°
25
90°
67°
26
89°
74°
27
92°
69°
28
92°
72°
29
91°
71°
30
92°
74°
1
91°
76°
2
93°
75°
3
89°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sulphur
Sulphur's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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. See also: October | November | December.