S
M
T
W
T
F
S
30
75°
55°
31
76°
54°
1
76°
55°
2
77°
55°
3
77°
56°
4
78°
54°
5
77°
54°
6
76°
55°
7
74°
53°
8
75°
52°
9
73°
55°
10
74°
51°
11
73°
50°
12
74°
50°
13
75°
56°
14
75°
51°
15
79°
54°
16
79°
57°
17
78°
58°
18
80°
56°
19
79°
47°
20
73°
48°
21
69°
54°
22
70°
53°
23
73°
54°
24
76°
55°
25
75°
46°
26
74°
44°
27
70°
46°
28
66°
45°
29
66°
45°
30
65°
45°
1
66°
51°
2
Hist. Avg.
68°
43°
3
Hist. Avg.
68°
43°
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 65° to 80°, with overnight lows between 44° and 58°. The average high for September is 74° 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 Dundee. See also: October | November | December.