S
M
T
W
T
F
S
30
72°
51°
31
71°
50°
1
70°
50°
2
71°
49°
3
72°
51°
4
77°
55°
5
74°
55°
6
69°
52°
7
73°
48°
8
71°
55°
9
72°
57°
10
76°
53°
11
72°
47°
12
68°
46°
13
66°
46°
14
64°
45°
15
64°
44°
16
65°
44°
17
66°
45°
18
67°
51°
19
71°
45°
20
72°
44°
21
66°
42°
22
61°
41°
23
71°
52°
24
Hist. Avg.
65°
42°
25
Hist. Avg.
64°
41°
26
Hist. Avg.
64°
41°
27
Hist. Avg.
64°
40°
28
Hist. Avg.
63°
40°
29
Hist. Avg.
63°
40°
30
Hist. Avg.
62°
39°
1
Hist. Avg.
62°
39°
2
Hist. Avg.
61°
39°
3
Hist. Avg.
61°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Oakland
Oakland's September 2026 forecast shows daily high temperatures ranging from 61° to 77°, with overnight lows between 41° and 57°. The average high for September is 70° with an average low of 49°. 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.