S
M
T
W
T
F
S
30
94°
74°
31
95°
76°
1
90°
77°
2
95°
77°
3
92°
78°
4
94°
75°
5
94°
74°
6
91°
75°
7
91°
74°
8
90°
73°
9
91°
75°
10
90°
76°
11
91°
75°
12
93°
74°
13
89°
75°
14
92°
75°
15
90°
74°
16
89°
75°
17
91°
73°
18
87°
76°
19
87°
76°
20
88°
75°
21
87°
75°
22
87°
74°
23
88°
75°
24
88°
75°
25
87°
74°
26
88°
75°
27
88°
75°
28
89°
74°
29
86°
75°
30
86°
73°
1
85°
74°
2
85°
74°
3
86°
73°
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 85° to 94°, with overnight lows between 73° and 76°. The average high for September is 89° with an average low of 75°. 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.