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
67°
50°
15
67°
47°
16
65°
58°
17
66°
55°
18
64°
56°
19
63°
59°
20
66°
55°
21
60°
49°
22
56°
47°
23
56°
47°
24
59°
40°
25
59°
45°
26
56°
50°
27
55°
51°
28
56°
47°
29
56°
50°
30
58°
49°
1
55°
49°
2
53°
44°
3
53°
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 59°, with overnight lows between 40° and 51°. The average high for September is 56° with an average low of 47°. 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.
