S
M
T
W
T
F
S
26
98°
61°
27
96°
58°
28
97°
58°
29
97°
60°
30
99°
59°
31
98°
57°
1
103°
61°
2
104°
63°
3
105°
63°
4
102°
66°
5
99°
61°
6
100°
59°
7
105°
62°
8
98°
62°
9
103°
62°
10
91°
61°
11
92°
62°
12
92°
59°
13
79°
59°
14
80°
58°
15
85°
58°
16
92°
56°
17
93°
63°
18
96°
58°
19
97°
60°
20
94°
59°
21
95°
61°
22
97°
62°
23
99°
59°
24
95°
65°
25
98°
62°
26
100°
60°
27
98°
60°
28
81°
68°
29
89°
54°
30
88°
55°
31
78°
58°
1
78°
53°
2
80°
61°
3
76°
61°
4
79°
52°
5
85°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Vacaville
Vacaville's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Vacaville. See also: September | October | November.
