S
M
T
W
T
F
S
30
64°
53°
31
65°
53°
1
65°
52°
2
64°
53°
3
63°
53°
4
60°
52°
5
63°
51°
6
62°
52°
7
64°
48°
8
63°
48°
9
62°
46°
10
63°
49°
11
60°
46°
12
62°
51°
13
60°
50°
14
60°
51°
15
63°
51°
16
63°
50°
17
58°
51°
18
59°
51°
19
61°
50°
20
59°
50°
21
59°
49°
22
60°
48°
23
58°
49°
24
57°
48°
25
55°
48°
26
55°
47°
27
57°
48°
28
54°
48°
29
55°
46°
30
54°
47°
1
56°
43°
2
54°
42°
3
52°
42°
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 65°, with overnight lows between 42° and 53°. The average high for September is 60° 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.
