S
M
T
W
T
F
S
30
91°
71°
31
86°
65°
1
85°
62°
2
86°
62°
3
86°
63°
4
84°
65°
5
85°
70°
6
89°
69°
7
93°
67°
8
88°
64°
9
86°
63°
10
86°
66°
11
88°
66°
12
87°
65°
13
88°
64°
14
87°
61°
15
90°
65°
16
89°
65°
17
89°
64°
18
86°
61°
19
82°
59°
20
84°
60°
21
87°
61°
22
87°
62°
23
86°
62°
24
83°
59°
25
79°
55°
26
79°
56°
27
78°
54°
28
79°
55°
29
81°
57°
30
81°
58°
1
79°
56°
2
82°
58°
3
85°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Griffith Park
Griffith Park's September 2026 forecast shows daily high temperatures ranging from 78° to 93°, with overnight lows between 54° and 70°. The average high for September is 85° 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 Griffith Park. See also: October | November | December.