S
M
T
W
T
F
S
30
79°
66°
31
75°
62°
1
72°
59°
2
71°
56°
3
72°
57°
4
74°
58°
5
80°
56°
6
80°
67°
7
89°
70°
8
95°
71°
9
95°
75°
10
86°
70°
11
79°
67°
12
75°
66°
13
76°
67°
14
75°
66°
15
77°
66°
16
76°
64°
17
77°
63°
18
77°
64°
19
77°
66°
20
79°
63°
21
80°
62°
22
79°
63°
23
80°
62°
24
81°
61°
25
81°
60°
26
82°
61°
27
82°
62°
28
78°
55°
29
79°
58°
30
76°
58°
1
75°
57°
2
74°
58°
3
74°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Laguna Niguel
Laguna Niguel's September 2026 forecast shows daily high temperatures ranging from 74° to 82°, with overnight lows between 55° and 66°. The average high for September is 78° with an average low of 61°. 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 Laguna Niguel. See also: October | November | December.
