S
M
T
W
T
F
S
30
90°
68°
31
N/A
1
97°
77°
2
98°
76°
3
98°
76°
4
96°
73°
5
87°
67°
6
84°
67°
7
85°
65°
8
84°
66°
9
87°
67°
10
86°
68°
11
86°
65°
12
84°
65°
13
85°
63°
14
84°
74°
15
81°
67°
16
77°
67°
17
78°
66°
18
77°
61°
19
75°
59°
20
75°
60°
21
76°
62°
22
79°
63°
23
81°
64°
24
82°
65°
25
80°
65°
26
79°
64°
27
78°
65°
28
77°
64°
29
80°
63°
30
77°
62°
1
73°
62°
2
73°
61°
3
76°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Berkeley Hills
Berkeley Hills's September 2026 forecast shows daily high temperatures ranging from 73° to 98°, with overnight lows between 59° and 77°. The average high for September is 82° with an average low of 66°. 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 Hills. See also: October | November | December.
