S
M
T
W
T
F
S
26
62°
42°
27
65°
49°
28
64°
52°
29
55°
39°
30
58°
35°
1
48°
32°
2
54°
29°
3
63°
39°
4
79°
47°
5
57°
44°
6
57°
41°
7
58°
35°
8
64°
43°
9
74°
44°
10
62°
42°
11
61°
38°
12
77°
36°
13
61°
40°
14
64°
41°
15
72°
45°
16
83°
59°
17
85°
63°
18
82°
65°
19
79°
60°
20
60°
44°
21
68°
44°
22
75°
52°
23
69°
56°
24
71°
55°
25
81°
51°
26
81°
55°
27
83°
54°
28
75°
54°
29
84°
53°
30
80°
55°
31
79°
48°
1
71°
51°
2
78°
48°
3
82°
54°
4
84°
65°
5
84°
66°
6
87°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Valparaiso
Valparaiso's May 2026 forecast shows daily high temperatures ranging from 71° to 87°, with overnight lows between 48° and 66°. The average high for May is 81° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Valparaiso. See also: June | July | August.
