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
58°
50°
23
56°
50°
24
63°
43°
25
63°
41°
26
58°
51°
27
59°
55°
28
55°
46°
29
54°
45°
30
58°
46°
1
58°
44°
2
58°
46°
3
56°
51°
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 54° to 58°, with overnight lows between 44° and 51°. The average high for September is 57° with an average low of 46°. 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.
