S
M
T
W
T
F
S
30
96°
79°
31
96°
77°
1
98°
74°
2
95°
74°
3
94°
77°
4
94°
80°
5
93°
79°
6
96°
81°
7
96°
80°
8
92°
76°
9
92°
75°
10
92°
76°
11
90°
74°
12
90°
75°
13
91°
77°
14
90°
74°
15
90°
79°
16
89°
78°
17
90°
78°
18
88°
77°
19
88°
78°
20
89°
79°
21
85°
77°
22
86°
76°
23
85°
76°
24
84°
76°
25
84°
75°
26
85°
76°
27
84°
76°
28
83°
76°
29
83°
75°
30
84°
76°
1
83°
76°
2
84°
75°
3
82°
75°
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 82° to 92°, with overnight lows between 74° and 79°. The average high for September is 87° with an average low of 76°. 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.