S
M
T
W
T
F
S
30
90°
67°
31
87°
69°
1
90°
69°
2
90°
68°
3
89°
67°
4
88°
63°
5
86°
64°
6
84°
63°
7
83°
61°
8
82°
62°
9
82°
63°
10
83°
64°
11
84°
65°
12
86°
65°
13
87°
66°
14
87°
63°
15
84°
62°
16
83°
65°
17
82°
67°
18
87°
67°
19
85°
66°
20
88°
67°
21
88°
67°
22
83°
65°
23
83°
61°
24
80°
60°
25
81°
59°
26
79°
60°
27
79°
63°
28
82°
61°
29
82°
61°
30
80°
59°
1
Hist. Avg.
82°
62°
2
Hist. Avg.
82°
62°
3
Hist. Avg.
82°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Buena Park
Buena Park's September 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 59° and 69°. The average high for September is 85° with an average low of 64°. 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 Buena Park. See also: October | November | December.
