S
M
T
W
T
F
S
28
95°
59°
29
96°
59°
30
93°
60°
1
90°
58°
2
93°
59°
3
105°
62°
4
96°
62°
5
94°
59°
6
97°
61°
7
93°
60°
8
95°
59°
9
93°
59°
10
94°
58°
11
96°
59°
12
92°
59°
13
95°
60°
14
93°
61°
15
93°
59°
16
96°
59°
17
93°
58°
18
95°
60°
19
98°
63°
20
98°
62°
21
97°
63°
22
97°
62°
23
94°
59°
24
91°
60°
25
93°
59°
26
91°
59°
27
91°
60°
28
90°
58°
29
89°
58°
30
93°
57°
31
91°
59°
1
92°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Vacaville
Vacaville's July 2026 forecast shows daily high temperatures ranging from 89° to 105°, with overnight lows between 57° and 63°. The average high for July is 94° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Vacaville. See also: August | September | October.