S
M
T
W
T
F
S
26
87°
69°
27
87°
69°
28
88°
68°
29
87°
67°
30
86°
63°
31
80°
61°
1
80°
65°
2
78°
66°
3
80°
65°
4
84°
67°
5
86°
68°
6
86°
67°
7
81°
63°
8
79°
63°
9
80°
65°
10
82°
62°
11
84°
65°
12
85°
67°
13
87°
68°
14
88°
66°
15
87°
68°
16
89°
65°
17
87°
59°
18
80°
57°
19
78°
57°
20
77°
56°
21
79°
57°
22
79°
58°
23
80°
58°
24
80°
59°
25
82°
60°
26
84°
62°
27
84°
57°
28
78°
56°
29
79°
58°
30
81°
62°
31
82°
57°
1
83°
56°
2
78°
55°
3
77°
60°
4
80°
64°
5
84°
59°
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 77° to 89°, with overnight lows between 55° and 69°. The average high for August is 82° 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.
