S
M
T
W
T
F
S
27
99°
68°
28
98°
70°
29
96°
74°
30
95°
77°
1
94°
75°
2
89°
74°
3
90°
75°
4
84°
75°
5
88°
72°
6
91°
71°
7
92°
68°
8
92°
61°
9
94°
61°
10
94°
65°
11
90°
68°
12
91°
71°
13
91°
72°
14
93°
71°
15
89°
70°
16
88°
62°
17
80°
56°
18
81°
56°
19
82°
59°
20
83°
60°
21
82°
59°
22
78°
59°
23
77°
55°
24
76°
55°
25
76°
56°
26
80°
56°
27
80°
57°
28
81°
58°
29
80°
62°
30
80°
61°
31
79°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mission Valley
Mission Valley's October 2026 forecast shows daily high temperatures ranging from 76° to 94°, with overnight lows between 55° and 72°. The average high for October is 84° with an average low of 61°. 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 Valley. See also: November | December | January.
