S
M
T
W
T
F
S
26
86°
67°
27
86°
69°
28
65°
63°
29
78°
63°
30
84°
59°
31
81°
60°
1
71°
65°
2
76°
60°
3
79°
59°
4
83°
59°
5
82°
64°
6
77°
65°
7
82°
66°
8
84°
69°
9
86°
68°
10
83°
62°
11
80°
59°
12
80°
62°
13
79°
63°
14
88°
67°
15
78°
59°
16
78°
65°
17
88°
68°
18
88°
69°
19
87°
67°
20
85°
66°
21
86°
66°
22
86°
67°
23
87°
67°
24
85°
66°
25
83°
66°
26
85°
65°
27
82°
65°
28
80°
64°
29
83°
65°
30
82°
64°
31
84°
65°
1
85°
64°
2
82°
63°
3
80°
62°
4
80°
63°
5
84°
63°
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 76° to 88°, with overnight lows between 59° and 69°. The average high for August is 83° with an average low of 64°. 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.
