S
M
T
W
T
F
S
30
81°
65°
31
78°
59°
1
76°
58°
2
78°
54°
3
77°
60°
4
77°
59°
5
83°
59°
6
76°
64°
7
84°
67°
8
89°
66°
9
99°
68°
10
90°
71°
11
86°
68°
12
81°
65°
13
79°
63°
14
79°
61°
15
80°
61°
16
77°
66°
17
77°
64°
18
78°
56°
19
78°
57°
20
76°
64°
21
79°
64°
22
78°
57°
23
81°
58°
24
78°
63°
25
77°
63°
26
85°
60°
27
84°
61°
28
78°
56°
29
89°
58°
30
85°
54°
1
88°
58°
2
91°
64°
3
96°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Somis
Somis's September 2026 forecast shows daily high temperatures ranging from 78° to 96°, with overnight lows between 54° and 64°. The average high for September is 88° 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 Somis. See also: October | November | December.
