S
M
T
W
T
F
S
30
93°
69°
31
92°
71°
1
91°
70°
2
89°
66°
3
87°
64°
4
86°
65°
5
86°
69°
6
87°
67°
7
87°
68°
8
89°
69°
9
91°
69°
10
87°
68°
11
89°
67°
12
87°
68°
13
90°
65°
14
90°
61°
15
86°
61°
16
85°
62°
17
84°
61°
18
85°
63°
19
88°
65°
20
89°
65°
21
89°
66°
22
85°
65°
23
86°
65°
24
83°
64°
25
83°
64°
26
86°
62°
27
87°
63°
28
86°
63°
29
87°
62°
30
87°
62°
1
86°
61°
2
86°
62°
3
85°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Waterproof
Waterproof's September 2026 forecast shows daily high temperatures ranging from 83° to 93°, with overnight lows between 56° and 71°. The average high for September is 87° with an average low of 65°. 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 Waterproof. See also: October | November | December.
