S
M
T
W
T
F
S
27
75°
54°
28
79°
50°
29
90°
48°
30
93°
54°
1
93°
52°
2
88°
55°
3
100°
55°
4
102°
59°
5
102°
61°
6
103°
59°
7
102°
60°
8
97°
56°
9
89°
57°
10
81°
52°
11
77°
49°
12
81°
47°
13
80°
51°
14
83°
50°
15
86°
52°
16
87°
53°
17
87°
51°
18
78°
48°
19
81°
52°
20
80°
51°
21
79°
51°
22
80°
50°
23
80°
51°
24
79°
51°
25
81°
50°
26
80°
50°
27
72°
49°
28
71°
46°
29
70°
47°
30
71°
46°
31
70°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Gilroy
Gilroy's October 2026 forecast shows daily high temperatures ranging from 70° to 103°, with overnight lows between 45° and 61°. The average high for October is 82° with an average low of 51°. 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 Gilroy. See also: November | December | January.