S
M
T
W
T
F
S
30
61°
57°
31
72°
54°
1
68°
52°
2
59°
48°
3
64°
57°
4
66°
55°
5
66°
52°
6
68°
55°
7
63°
52°
8
64°
54°
9
59°
46°
10
61°
45°
11
64°
48°
12
70°
52°
13
66°
52°
14
68°
54°
15
68°
54°
16
66°
50°
17
61°
50°
18
59°
52°
19
63°
52°
20
64°
52°
21
72°
52°
22
70°
54°
23
62°
44°
24
61°
53°
25
61°
48°
26
62°
52°
27
60°
46°
28
58°
47°
29
60°
52°
30
61°
48°
1
57°
45°
2
59°
44°
3
55°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Carnoustie
Carnoustie's September 2026 forecast shows daily high temperatures ranging from 55° to 70°, with overnight lows between 44° and 54°. The average high for September is 61° with an average low of 48°. 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 Carnoustie. See also: October | November | December.