S
M
T
W
T
F
S
26
93°
80°
27
93°
79°
28
92°
80°
29
94°
79°
30
95°
80°
31
95°
80°
1
94°
79°
2
94°
79°
3
92°
80°
4
92°
80°
5
93°
79°
6
92°
80°
7
93°
80°
8
93°
79°
9
94°
80°
10
93°
80°
11
94°
79°
12
94°
80°
13
93°
78°
14
94°
77°
15
95°
78°
16
94°
78°
17
95°
79°
18
94°
78°
19
93°
77°
20
93°
76°
21
94°
76°
22
94°
77°
23
93°
77°
24
93°
76°
25
92°
78°
26
93°
77°
27
91°
76°
28
93°
75°
29
93°
77°
30
92°
77°
31
93°
76°
1
91°
76°
2
92°
77°
3
93°
76°
4
94°
77°
5
94°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Chula Vista
Chula Vista's August 2026 forecast shows daily high temperatures ranging from 91° to 95°, with overnight lows between 75° and 80°. The average high for August is 93° with an average low of 78°. 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 Chula Vista. See also: September | October | November.
