S
M
T
W
T
F
S
30
79°
66°
31
75°
62°
1
78°
62°
2
77°
61°
3
76°
64°
4
76°
64°
5
80°
69°
6
84°
66°
7
86°
64°
8
83°
63°
9
81°
62°
10
80°
61°
11
81°
64°
12
83°
62°
13
82°
63°
14
81°
59°
15
84°
63°
16
83°
62°
17
84°
61°
18
81°
58°
19
77°
57°
20
78°
58°
21
81°
59°
22
82°
60°
23
81°
60°
24
78°
57°
25
74°
54°
26
74°
54°
27
73°
53°
28
74°
54°
29
76°
55°
30
76°
57°
1
75°
55°
2
78°
57°
3
81°
61°
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 73° to 86°, with overnight lows between 53° and 69°. The average high for September is 79° with an average low of 60°. 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.
