S
M
T
W
T
F
S
31
84°
63°
1
81°
57°
2
84°
60°
3
86°
61°
4
89°
64°
5
93°
65°
6
94°
71°
7
89°
69°
8
82°
63°
9
81°
60°
10
84°
62°
11
87°
64°
12
87°
62°
13
83°
61°
14
87°
61°
15
87°
63°
16
85°
60°
17
87°
59°
18
90°
62°
19
92°
66°
20
92°
65°
21
89°
65°
22
89°
62°
23
91°
61°
24
94°
71°
25
96°
74°
26
88°
70°
27
84°
71°
28
81°
70°
29
73°
70°
30
76°
70°
1
84°
63°
2
78°
55°
3
79°
55°
4
83°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Oakland
Oakland's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Oakland. See also: October | November | December.