S
M
T
W
T
F
S
30
76°
60°
31
76°
59°
1
77°
61°
2
77°
61°
3
71°
60°
4
72°
59°
5
75°
60°
6
74°
61°
7
71°
61°
8
72°
60°
9
71°
59°
10
72°
60°
11
72°
58°
12
73°
57°
13
77°
57°
14
75°
58°
15
75°
58°
16
74°
57°
17
71°
60°
18
71°
59°
19
77°
61°
20
79°
60°
21
71°
55°
22
71°
57°
23
75°
57°
24
76°
58°
25
77°
59°
26
78°
58°
27
77°
54°
28
71°
53°
29
70°
55°
30
71°
56°
1
74°
56°
2
77°
59°
3
76°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Alameda
Alameda's September 2026 forecast shows daily high temperatures ranging from 70° to 79°, with overnight lows between 53° and 61°. The average high for September is 74° with an average low of 58°. 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 Alameda. See also: October | November | December.
