S
M
T
W
T
F
S
30
91°
77°
31
92°
76°
1
93°
75°
2
92°
76°
3
90°
76°
4
90°
75°
5
90°
75°
6
91°
76°
7
90°
75°
8
90°
75°
9
91°
76°
10
91°
76°
11
89°
75°
12
89°
75°
13
90°
76°
14
89°
75°
15
90°
76°
16
89°
75°
17
90°
76°
18
90°
76°
19
90°
77°
20
90°
77°
21
91°
76°
22
Hist. Avg.
87°
75°
23
Hist. Avg.
87°
75°
24
Hist. Avg.
87°
75°
25
Hist. Avg.
87°
75°
26
Hist. Avg.
87°
75°
27
Hist. Avg.
87°
75°
28
Hist. Avg.
87°
75°
29
Hist. Avg.
87°
75°
30
Hist. Avg.
87°
75°
1
Hist. Avg.
87°
75°
2
Hist. Avg.
87°
75°
3
Hist. Avg.
87°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Laguna
Laguna's September 2026 forecast shows daily high temperatures ranging from 89° to 93°, with overnight lows between 75° and 77°. The average high for September is 90° with an average low of 76°. 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. See also: October | November | December.