S
M
T
W
T
F
S
30
66°
54°
31
66°
54°
1
65°
56°
2
66°
50°
3
66°
56°
4
65°
56°
5
67°
55°
6
67°
55°
7
66°
54°
8
66°
54°
9
64°
51°
10
65°
48°
11
60°
50°
12
63°
54°
13
64°
53°
14
65°
54°
15
64°
53°
16
64°
53°
17
63°
54°
18
64°
53°
19
64°
50°
20
62°
48°
21
61°
52°
22
62°
52°
23
62°
50°
24
61°
52°
25
60°
53°
26
62°
53°
27
61°
52°
28
61°
52°
29
60°
51°
30
62°
51°
1
62°
52°
2
61°
51°
3
61°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dunstan
Dunstan's September 2026 forecast shows daily high temperatures ranging from 60° to 67°, with overnight lows between 48° and 56°. The average high for September is 63° with an average low of 52°. 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 Dunstan. See also: October | November | December.