S
M
T
W
T
F
S
27
88°
69°
28
82°
64°
29
84°
60°
30
82°
64°
1
84°
60°
2
103°
62°
3
101°
75°
4
100°
78°
5
101°
77°
6
100°
74°
7
97°
67°
8
92°
64°
9
89°
66°
10
82°
63°
11
75°
59°
12
69°
58°
13
74°
57°
14
80°
58°
15
88°
59°
16
89°
58°
17
87°
60°
18
88°
60°
19
85°
58°
20
87°
60°
21
80°
55°
22
83°
58°
23
84°
59°
24
83°
59°
25
83°
58°
26
82°
59°
27
82°
58°
28
81°
58°
29
82°
57°
30
81°
58°
31
80°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mission Viejo
Mission Viejo's October 2026 forecast shows daily high temperatures ranging from 69° to 92°, with overnight lows between 55° and 66°. The average high for October is 83° 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 October weather will actually feel in Mission Viejo. See also: November | December | January.
