S
M
T
W
T
F
S
26
85°
54°
27
86°
56°
28
87°
58°
29
87°
58°
30
88°
56°
31
87°
61°
1
86°
56°
2
88°
58°
3
83°
59°
4
87°
57°
5
Hist. Avg.
86°
56°
6
Hist. Avg.
86°
56°
7
Hist. Avg.
86°
56°
8
Hist. Avg.
86°
56°
9
Hist. Avg.
86°
56°
10
Hist. Avg.
86°
56°
11
Hist. Avg.
86°
56°
12
Hist. Avg.
86°
56°
13
Hist. Avg.
86°
56°
14
Hist. Avg.
86°
56°
15
Hist. Avg.
86°
56°
16
Hist. Avg.
86°
56°
17
Hist. Avg.
86°
56°
18
Hist. Avg.
86°
56°
19
Hist. Avg.
86°
56°
20
Hist. Avg.
86°
56°
21
Hist. Avg.
86°
56°
22
Hist. Avg.
86°
56°
23
Hist. Avg.
86°
56°
24
Hist. Avg.
86°
56°
25
Hist. Avg.
86°
56°
26
Hist. Avg.
86°
56°
27
Hist. Avg.
87°
56°
28
Hist. Avg.
87°
56°
29
Hist. Avg.
87°
56°
30
Hist. Avg.
87°
56°
31
Hist. Avg.
87°
56°
1
Hist. Avg.
87°
56°
2
Hist. Avg.
87°
56°
3
Hist. Avg.
87°
56°
4
Hist. Avg.
87°
56°
5
Hist. Avg.
87°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Vallejo
Vallejo's August 2026 forecast shows daily high temperatures ranging from 83° to 88°, with overnight lows between 54° and 61°. The average high for August is 86° with an average low of 57°. 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 Vallejo. See also: September | October | November.
