S
M
T
W
T
F
S
27
103°
79°
28
102°
78°
29
102°
80°
30
101°
82°
1
101°
77°
2
95°
78°
3
95°
78°
4
80°
77°
5
84°
76°
6
95°
76°
7
90°
77°
8
94°
77°
9
95°
74°
10
94°
73°
11
92°
77°
12
96°
77°
13
97°
80°
14
97°
79°
15
93°
76°
16
86°
70°
17
75°
58°
18
79°
56°
19
85°
65°
20
90°
72°
21
91°
66°
22
88°
73°
23
89°
71°
24
90°
68°
25
87°
73°
26
89°
67°
27
89°
73°
28
91°
75°
29
87°
72°
30
90°
71°
31
92°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mission
Mission's October 2026 forecast shows daily high temperatures ranging from 87° to 92°, with overnight lows between 71° and 74°. The average high for October is 90° with an average low of 72°. 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. See also: November | December | January.