S
M
T
W
T
F
S
27
79°
58°
28
86°
51°
29
98°
53°
30
95°
54°
1
94°
55°
2
95°
59°
3
101°
64°
4
98°
59°
5
99°
61°
6
103°
60°
7
102°
58°
8
102°
62°
9
97°
59°
10
93°
59°
11
95°
58°
12
95°
58°
13
92°
54°
14
92°
56°
15
95°
54°
16
83°
54°
17
84°
55°
18
84°
55°
19
85°
54°
20
82°
53°
21
78°
53°
22
74°
52°
23
76°
52°
24
78°
51°
25
78°
52°
26
77°
51°
27
79°
51°
28
77°
50°
29
69°
47°
30
76°
49°
31
75°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Vacaville
Vacaville's October 2026 forecast shows daily high temperatures ranging from 69° to 103°, with overnight lows between 47° and 64°. The average high for October is 87° with an average low of 55°. 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 Vacaville. See also: November | December | January.
