S
M
T
W
T
F
S
30
87°
69°
31
88°
67°
1
85°
66°
2
84°
65°
3
85°
68°
4
86°
66°
5
85°
64°
6
84°
63°
7
83°
64°
8
83°
68°
9
81°
65°
10
80°
61°
11
81°
61°
12
80°
66°
13
81°
67°
14
80°
63°
15
80°
59°
16
78°
59°
17
77°
60°
18
78°
60°
19
79°
61°
20
80°
60°
21
78°
62°
22
79°
63°
23
80°
65°
24
82°
65°
25
84°
64°
26
84°
66°
27
83°
66°
28
85°
65°
29
85°
66°
30
84°
66°
1
85°
65°
2
85°
65°
3
84°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Garden Grove
Garden Grove's September 2026 forecast shows daily high temperatures ranging from 77° to 88°, with overnight lows between 59° and 69°. The average high for September is 82° 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 Garden Grove. See also: October | November | December.
