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
66°
54°
11
78°
51°
12
73°
47°
13
69°
47°
14
62°
49°
15
62°
52°
16
61°
53°
17
60°
54°
18
59°
50°
19
60°
53°
20
59°
51°
21
58°
50°
22
59°
49°
23
56°
48°
24
57°
51°
25
58°
50°
26
59°
51°
27
55°
43°
28
54°
48°
29
55°
47°
30
54°
48°
1
54°
46°
2
53°
46°
3
52°
45°
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 52° to 62°, with overnight lows between 43° and 54°. The average high for September is 57° with an average low of 49°. 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.
