S
M
T
W
T
F
S
27
79°
69°
28
79°
68°
29
78°
67°
30
77°
68°
1
78°
68°
2
75°
64°
3
74°
67°
4
79°
68°
5
71°
62°
6
72°
64°
7
73°
63°
8
77°
64°
9
78°
64°
10
75°
62°
11
73°
63°
12
72°
61°
13
71°
59°
14
71°
59°
15
72°
58°
16
70°
59°
17
72°
64°
18
73°
59°
19
74°
63°
20
76°
64°
21
76°
64°
22
71°
61°
23
70°
57°
24
70°
59°
25
76°
59°
26
74°
63°
27
72°
59°
28
73°
59°
29
73°
62°
30
77°
63°
31
76°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in PETCO Park
PETCO Park's October 2026 forecast shows daily high temperatures ranging from 70° to 79°, with overnight lows between 57° and 69°. The average high for October is 74° with an average low of 63°. 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 PETCO Park. See also: November | December | January.