S
M
T
W
T
F
S
27
87°
70°
28
87°
69°
29
86°
71°
30
86°
70°
1
87°
69°
2
87°
66°
3
85°
66°
4
84°
67°
5
84°
66°
6
85°
66°
7
84°
67°
8
85°
66°
9
84°
65°
10
85°
64°
11
83°
64°
12
84°
65°
13
83°
66°
14
86°
67°
15
85°
67°
16
Hist. Avg.
85°
65°
17
Hist. Avg.
85°
65°
18
Hist. Avg.
84°
64°
19
Hist. Avg.
84°
64°
20
Hist. Avg.
84°
64°
21
Hist. Avg.
84°
64°
22
Hist. Avg.
83°
63°
23
Hist. Avg.
83°
63°
24
Hist. Avg.
83°
63°
25
Hist. Avg.
83°
63°
26
Hist. Avg.
82°
62°
27
Hist. Avg.
82°
62°
28
Hist. Avg.
82°
62°
29
Hist. Avg.
82°
62°
30
Hist. Avg.
81°
61°
31
Hist. Avg.
81°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in San Antonio
San Antonio's October 2026 forecast shows daily high temperatures ranging from 83° to 87°, with overnight lows between 64° and 71°. The average high for October is 85° with an average low of 67°. 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. See also: November | December | January.
