S
M
T
W
T
F
S
30
73°
64°
31
69°
62°
1
83°
67°
2
84°
67°
3
83°
67°
4
78°
64°
5
74°
60°
6
71°
51°
7
74°
53°
8
77°
61°
9
79°
67°
10
78°
54°
11
71°
51°
12
79°
62°
13
79°
59°
14
72°
61°
15
76°
59°
16
73°
53°
17
72°
54°
18
65°
52°
19
63°
48°
20
67°
50°
21
65°
49°
22
66°
54°
23
68°
54°
24
69°
53°
25
74°
54°
26
73°
51°
27
66°
48°
28
72°
53°
29
73°
54°
30
74°
54°
1
74°
53°
2
72°
51°
3
71°
49°
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 63° to 79°, with overnight lows between 48° and 67°. The average high for September is 72° with an average low of 54°. 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.