S
M
T
W
T
F
S
30
100°
79°
31
101°
76°
1
100°
74°
2
103°
77°
3
101°
77°
4
100°
73°
5
99°
74°
6
99°
75°
7
100°
73°
8
101°
74°
9
100°
73°
10
100°
74°
11
96°
70°
12
96°
71°
13
94°
70°
14
86°
63°
15
90°
69°
16
89°
68°
17
90°
69°
18
90°
68°
19
89°
68°
20
90°
67°
21
89°
67°
22
88°
66°
23
79°
66°
24
82°
65°
25
84°
64°
26
85°
65°
27
86°
64°
28
87°
64°
29
86°
63°
30
86°
64°
1
85°
64°
2
86°
63°
3
85°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sweetwater
Sweetwater's September 2026 forecast shows daily high temperatures ranging from 79° to 103°, with overnight lows between 63° and 77°. The average high for September is 92° 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 Sweetwater. See also: October | November | December.
