S
M
T
W
T
F
S
30
91°
67°
31
90°
69°
1
93°
67°
2
94°
66°
3
93°
68°
4
93°
69°
5
92°
69°
6
95°
67°
7
95°
66°
8
92°
67°
9
92°
68°
10
93°
67°
11
92°
66°
12
91°
65°
13
90°
64°
14
89°
66°
15
91°
65°
16
92°
57°
17
83°
62°
18
82°
64°
19
89°
55°
20
90°
54°
21
81°
54°
22
79°
55°
23
81°
55°
24
81°
56°
25
82°
60°
26
87°
61°
27
88°
61°
28
87°
60°
29
87°
59°
30
85°
58°
1
86°
59°
2
86°
58°
3
78°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in West Carlsbad
West Carlsbad's September 2026 forecast shows daily high temperatures ranging from 78° to 95°, with overnight lows between 54° and 69°. The average high for September is 88° with an average low of 62°. 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 West Carlsbad. See also: October | November | December.
