S
M
T
W
T
F
S
27
81°
54°
28
82°
55°
29
84°
57°
30
84°
59°
1
83°
57°
2
85°
58°
3
88°
60°
4
88°
60°
5
88°
59°
6
87°
60°
7
84°
59°
8
85°
59°
9
84°
58°
10
85°
59°
11
85°
58°
12
84°
49°
13
80°
49°
14
78°
51°
15
80°
50°
16
79°
55°
17
81°
53°
18
81°
53°
19
79°
52°
20
83°
52°
21
79°
56°
22
82°
55°
23
84°
52°
24
83°
51°
25
82°
55°
26
79°
50°
27
79°
51°
28
80°
54°
29
80°
52°
30
79°
53°
31
82°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Simi Valley
Simi Valley's October 2026 forecast shows daily high temperatures ranging from 78° to 88°, with overnight lows between 49° and 60°. The average high for October is 82° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Simi Valley. See also: November | December | January.
