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
74°
53°
6
66°
52°
7
62°
54°
8
63°
54°
9
61°
51°
10
63°
51°
11
64°
51°
12
67°
55°
13
63°
51°
14
59°
52°
15
61°
50°
16
59°
50°
17
60°
51°
18
58°
47°
19
57°
48°
20
55°
47°
21
57°
49°
22
57°
48°
23
56°
49°
24
56°
50°
25
57°
49°
26
54°
48°
27
54°
47°
28
53°
46°
29
55°
48°
30
57°
49°
1
57°
49°
2
56°
48°
3
56°
46°
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 53° to 74°, with overnight lows between 46° and 55°. The average high for September is 59° with an average low of 50°. 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.
