S
M
T
W
T
F
S
30
87°
51°
31
89°
52°
1
89°
52°
2
90°
51°
3
89°
51°
4
89°
53°
5
88°
52°
6
88°
54°
7
87°
54°
8
89°
51°
9
87°
51°
10
82°
53°
11
88°
54°
12
83°
51°
13
82°
51°
14
81°
48°
15
81°
48°
16
86°
48°
17
87°
53°
18
86°
51°
19
Hist. Avg.
84°
50°
20
Hist. Avg.
84°
49°
21
Hist. Avg.
83°
49°
22
Hist. Avg.
83°
49°
23
Hist. Avg.
83°
49°
24
Hist. Avg.
83°
49°
25
Hist. Avg.
82°
49°
26
Hist. Avg.
82°
49°
27
Hist. Avg.
82°
49°
28
Hist. Avg.
82°
48°
29
Hist. Avg.
82°
48°
30
Hist. Avg.
81°
48°
1
Hist. Avg.
81°
48°
2
Hist. Avg.
81°
48°
3
Hist. Avg.
80°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Benicia
Benicia's September 2026 forecast shows daily high temperatures ranging from 81° to 90°, with overnight lows between 48° and 54°. The average high for September is 86° with an average low of 51°. 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 Benicia. See also: October | November | December.
