S
M
T
W
T
F
S
30
64°
53°
31
62°
52°
1
64°
53°
2
65°
53°
3
63°
54°
4
65°
53°
5
64°
51°
6
61°
52°
7
60°
51°
8
61°
50°
9
60°
48°
10
60°
50°
11
61°
47°
12
60°
50°
13
60°
48°
14
61°
49°
15
59°
48°
16
59°
50°
17
60°
47°
18
59°
48°
19
61°
48°
20
59°
47°
21
59°
49°
22
58°
47°
23
58°
45°
24
59°
45°
25
58°
49°
26
58°
50°
27
59°
47°
28
57°
46°
29
57°
44°
30
58°
45°
1
57°
46°
2
58°
50°
3
57°
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 57° to 65°, with overnight lows between 44° and 54°. The average high for September is 60° with an average low of 49°. 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.