S
M
T
W
T
F
S
30
91°
62°
31
82°
65°
1
82°
65°
2
88°
69°
3
90°
71°
4
90°
70°
5
91°
64°
6
88°
61°
7
81°
59°
8
80°
60°
9
81°
67°
10
83°
65°
11
80°
58°
12
79°
58°
13
78°
63°
14
80°
65°
15
82°
55°
16
85°
55°
17
75°
56°
18
75°
55°
19
76°
55°
20
74°
56°
21
74°
54°
22
75°
53°
23
75°
53°
24
77°
58°
25
79°
61°
26
81°
59°
27
82°
58°
28
73°
61°
29
79°
53°
30
80°
52°
1
73°
56°
2
72°
50°
3
70°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Oakland
Oakland's September 2026 forecast shows daily high temperatures ranging from 70° to 91°, with overnight lows between 50° and 71°. The average high for September is 80° with an average low of 59°. 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.
