S
M
T
W
T
F
S
30
N/A
31
N/A
1
100°
76°
2
98°
75°
3
96°
75°
4
98°
74°
5
97°
75°
6
100°
77°
7
101°
77°
8
103°
76°
9
98°
75°
10
100°
73°
11
94°
73°
12
93°
70°
13
91°
71°
14
87°
66°
15
88°
70°
16
90°
69°
17
90°
70°
18
89°
70°
19
90°
69°
20
89°
70°
21
89°
69°
22
88°
68°
23
88°
68°
24
87°
67°
25
88°
67°
26
88°
66°
27
89°
67°
28
88°
66°
29
87°
65°
30
88°
66°
1
88°
66°
2
87°
65°
3
86°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Redwater
Redwater's September 2026 forecast shows daily high temperatures ranging from 86° to 103°, with overnight lows between 65° and 77°. The average high for September is 92° with an average low of 70°. 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 Redwater. See also: October | November | December.