S
M
T
W
T
F
S
27
82°
57°
28
84°
56°
29
83°
52°
30
80°
52°
1
84°
54°
2
78°
55°
3
84°
53°
4
84°
56°
5
85°
56°
6
84°
55°
7
80°
55°
8
78°
54°
9
78°
52°
10
79°
55°
11
75°
54°
12
75°
54°
13
80°
53°
14
80°
50°
15
79°
51°
16
80°
53°
17
79°
52°
18
78°
52°
19
72°
45°
20
71°
47°
21
71°
45°
22
72°
48°
23
71°
48°
24
70°
49°
25
73°
48°
26
74°
49°
27
75°
48°
28
72°
49°
29
71°
49°
30
68°
47°
31
75°
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 68° to 85°, with overnight lows between 45° and 57°. The average high for October is 77° with an average low of 52°. 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.