S
M
T
W
T
F
S
27
95°
64°
28
91°
68°
29
93°
73°
30
88°
73°
1
79°
68°
2
81°
71°
3
77°
70°
4
75°
70°
5
82°
64°
6
86°
61°
7
88°
55°
8
85°
67°
9
93°
62°
10
90°
67°
11
92°
68°
12
91°
72°
13
93°
74°
14
94°
74°
15
90°
70°
16
84°
60°
17
77°
57°
18
77°
60°
19
79°
62°
20
81°
61°
21
80°
58°
22
75°
58°
23
73°
52°
24
73°
52°
25
74°
53°
26
75°
53°
27
77°
55°
28
77°
55°
29
78°
58°
30
76°
60°
31
76°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in San Antonio Northwest
San Antonio Northwest's October 2026 forecast shows daily high temperatures ranging from 73° to 94°, with overnight lows between 52° and 74°. The average high for October is 82° 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 San Antonio Northwest. See also: November | December | January.