S
M
T
W
T
F
S
30
78°
55°
31
79°
54°
1
78°
53°
2
77°
53°
3
78°
54°
4
79°
57°
5
80°
57°
6
80°
54°
7
78°
54°
8
75°
55°
9
78°
54°
10
77°
51°
11
74°
51°
12
74°
50°
13
75°
50°
14
74°
49°
15
73°
55°
16
73°
52°
17
79°
51°
18
77°
50°
19
74°
52°
20
77°
52°
21
78°
53°
22
78°
54°
23
77°
56°
24
73°
56°
25
Hist. Avg.
76°
53°
26
Hist. Avg.
76°
53°
27
Hist. Avg.
76°
53°
28
Hist. Avg.
76°
53°
29
Hist. Avg.
76°
53°
30
Hist. Avg.
76°
53°
1
Hist. Avg.
76°
53°
2
Hist. Avg.
76°
53°
3
Hist. Avg.
75°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Berkeley
Berkeley's September 2026 forecast shows daily high temperatures ranging from 73° to 80°, with overnight lows between 49° and 57°. The average high for September is 77° with an average low of 53°. 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 Berkeley. See also: October | November | December.
