S
M
T
W
T
F
S
30
79°
55°
31
82°
59°
1
84°
56°
2
79°
55°
3
78°
60°
4
84°
62°
5
84°
62°
6
83°
60°
7
78°
57°
8
77°
54°
9
80°
61°
10
81°
59°
11
78°
60°
12
80°
60°
13
81°
56°
14
75°
51°
15
74°
51°
16
74°
50°
17
75°
54°
18
77°
57°
19
80°
57°
20
81°
58°
21
73°
52°
22
78°
55°
23
72°
56°
24
79°
49°
25
72°
47°
26
69°
46°
27
Hist. Avg.
73°
50°
28
Hist. Avg.
73°
50°
29
Hist. Avg.
72°
49°
30
Hist. Avg.
72°
49°
1
Hist. Avg.
72°
49°
2
Hist. Avg.
71°
48°
3
Hist. Avg.
71°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Duncan Falls
Duncan Falls's September 2026 forecast shows daily high temperatures ranging from 69° to 84°, with overnight lows between 46° and 62°. The average high for September is 78° with an average low of 56°. 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 Duncan Falls. See also: October | November | December.
