S
M
T
W
T
F
S
30
62°
51°
31
65°
47°
1
66°
51°
2
65°
52°
3
64°
53°
4
64°
52°
5
62°
48°
6
62°
47°
7
61°
46°
8
62°
52°
9
63°
48°
10
62°
50°
11
60°
49°
12
59°
51°
13
61°
52°
14
60°
51°
15
61°
51°
16
63°
48°
17
63°
50°
18
63°
50°
19
Hist. Avg.
58°
45°
20
Hist. Avg.
58°
45°
21
Hist. Avg.
58°
45°
22
Hist. Avg.
57°
45°
23
Hist. Avg.
57°
45°
24
Hist. Avg.
57°
45°
25
Hist. Avg.
57°
45°
26
Hist. Avg.
56°
45°
27
Hist. Avg.
56°
44°
28
Hist. Avg.
56°
44°
29
Hist. Avg.
56°
44°
30
Hist. Avg.
56°
44°
1
Hist. Avg.
55°
44°
2
Hist. Avg.
55°
44°
3
Hist. Avg.
55°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Duns
Duns's September 2026 forecast shows daily high temperatures ranging from 59° to 66°, with overnight lows between 46° and 53°. The average high for September is 62° with an average low of 50°. 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 Duns. See also: October | November | December.