S
M
T
W
T
F
S
26
82°
61°
27
83°
64°
28
85°
63°
29
86°
68°
30
85°
68°
31
89°
67°
1
89°
68°
2
88°
68°
3
89°
70°
4
90°
62°
5
88°
59°
6
82°
58°
7
79°
59°
8
79°
59°
9
80°
60°
10
81°
61°
11
83°
67°
12
88°
68°
13
89°
67°
14
88°
63°
15
89°
59°
16
80°
57°
17
80°
57°
18
81°
61°
19
84°
60°
20
84°
58°
21
85°
57°
22
81°
62°
23
86°
65°
24
87°
63°
25
87°
61°
26
80°
64°
27
81°
64°
28
87°
63°
29
86°
64°
30
87°
58°
31
84°
61°
1
75°
60°
2
82°
59°
3
81°
60°
4
84°
63°
5
86°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Valparaiso
Valparaiso's August 2026 forecast shows daily high temperatures ranging from 75° to 90°, with overnight lows between 53° and 70°. The average high for August is 84° with an average low of 62°. 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 Valparaiso. See also: September | October | November.
