S
M
T
W
T
F
S
30
64°
53°
31
66°
54°
1
65°
54°
2
64°
53°
3
61°
52°
4
60°
48°
5
58°
46°
6
58°
47°
7
59°
49°
8
58°
47°
9
57°
47°
10
58°
48°
11
57°
46°
12
56°
46°
13
58°
47°
14
57°
48°
15
56°
49°
16
57°
45°
17
56°
49°
18
58°
49°
19
58°
50°
20
60°
49°
21
60°
47°
22
56°
47°
23
Hist. Avg.
58°
45°
24
Hist. Avg.
58°
45°
25
Hist. Avg.
58°
44°
26
Hist. Avg.
58°
44°
27
Hist. Avg.
57°
44°
28
Hist. Avg.
57°
44°
29
Hist. Avg.
57°
44°
30
Hist. Avg.
57°
44°
1
Hist. Avg.
56°
43°
2
Hist. Avg.
56°
43°
3
Hist. Avg.
56°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Waterfall
Waterfall's September 2026 forecast shows daily high temperatures ranging from 56° to 66°, with overnight lows between 45° and 54°. The average high for September is 59° 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.
