S
M
T
W
T
F
S
27
90°
71°
28
83°
67°
29
87°
62°
30
85°
64°
1
87°
67°
2
104°
65°
3
102°
72°
4
101°
74°
5
102°
72°
6
101°
74°
7
99°
71°
8
95°
70°
9
89°
65°
10
85°
69°
11
73°
58°
12
68°
55°
13
74°
58°
14
82°
59°
15
88°
60°
16
93°
63°
17
96°
62°
18
92°
65°
19
91°
63°
20
87°
63°
21
88°
62°
22
87°
62°
23
80°
56°
24
83°
60°
25
82°
59°
26
83°
60°
27
82°
60°
28
82°
59°
29
81°
59°
30
81°
58°
31
80°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in San Gabriel
San Gabriel's October 2026 forecast shows daily high temperatures ranging from 68° to 96°, with overnight lows between 55° and 69°. The average high for October is 84° with an average low of 60°. 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 Gabriel. See also: November | December | January.