S
M
T
W
T
F
S
26
86°
74°
27
87°
74°
28
87°
75°
29
88°
74°
30
88°
74°
31
89°
74°
1
88°
73°
2
88°
73°
3
88°
72°
4
87°
72°
5
89°
74°
6
91°
74°
7
92°
71°
8
91°
72°
9
92°
72°
10
92°
73°
11
91°
74°
12
92°
74°
13
90°
73°
14
89°
73°
15
88°
72°
16
89°
74°
17
91°
74°
18
91°
73°
19
92°
74°
20
91°
73°
21
91°
73°
22
92°
72°
23
88°
72°
24
87°
71°
25
89°
71°
26
88°
70°
27
91°
72°
28
90°
71°
29
88°
73°
30
90°
73°
31
91°
72°
1
91°
72°
2
90°
71°
3
90°
70°
4
89°
72°
5
88°
71°
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 86° to 92°, with overnight lows between 70° and 75°. The average high for August is 90° with an average low of 73°. 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.
