S
M
T
W
T
F
S
27
87°
70°
28
87°
69°
29
90°
70°
30
91°
70°
1
91°
69°
2
87°
69°
3
86°
68°
4
86°
68°
5
83°
67°
6
86°
68°
7
88°
69°
8
90°
68°
9
89°
68°
10
88°
67°
11
88°
63°
12
80°
59°
13
78°
56°
14
77°
56°
15
77°
55°
16
78°
55°
17
78°
61°
18
77°
56°
19
75°
54°
20
75°
54°
21
76°
56°
22
77°
62°
23
87°
58°
24
87°
57°
25
82°
52°
26
85°
50°
27
76°
51°
28
75°
61°
29
76°
62°
30
85°
50°
31
83°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Pleasanton
Pleasanton's October 2026 forecast shows daily high temperatures ranging from 75° to 91°, with overnight lows between 50° and 70°. The average high for October is 83° 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 Pleasanton. See also: November | December | January.