S
M
T
W
T
F
S
30
65°
59°
31
63°
57°
1
60°
56°
2
72°
51°
3
81°
47°
4
80°
49°
5
73°
48°
6
71°
50°
7
66°
57°
8
64°
60°
9
67°
56°
10
64°
48°
11
73°
48°
12
69°
49°
13
65°
49°
14
66°
50°
15
63°
51°
16
61°
51°
17
63°
50°
18
62°
52°
19
62°
51°
20
62°
51°
21
59°
50°
22
59°
52°
23
56°
46°
24
56°
50°
25
54°
46°
26
54°
45°
27
55°
43°
28
53°
43°
29
53°
45°
30
54°
46°
1
53°
43°
2
52°
42°
3
51°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Waterfall
Waterfall's September 2026 forecast shows daily high temperatures ranging from 51° to 73°, with overnight lows between 41° and 52°. The average high for September is 59° with an average low of 48°. 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 Waterfall. See also: October | November | December.
