S
M
T
W
T
F
S
30
66°
54°
31
64°
53°
1
63°
52°
2
61°
49°
3
61°
50°
4
62°
50°
5
61°
53°
6
64°
54°
7
64°
53°
8
65°
52°
9
65°
53°
10
64°
53°
11
64°
52°
12
60°
52°
13
60°
50°
14
61°
47°
15
60°
47°
16
60°
49°
17
61°
47°
18
60°
47°
19
59°
46°
20
59°
46°
21
60°
47°
22
59°
52°
23
62°
50°
24
63°
48°
25
59°
45°
26
60°
45°
27
59°
47°
28
58°
46°
29
59°
45°
30
60°
44°
1
57°
43°
2
57°
42°
3
56°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dundee
Dundee's September 2026 forecast shows daily high temperatures ranging from 56° to 66°, with overnight lows between 42° and 54°. The average high for September is 61° 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 Dundee. See also: October | November | December.