S
M
T
W
T
F
S
26
66°
44°
27
65°
42°
28
65°
46°
29
65°
43°
30
60°
46°
1
59°
48°
2
60°
49°
3
61°
44°
4
60°
39°
5
61°
39°
6
69°
50°
7
73°
46°
8
62°
44°
9
62°
45°
10
63°
47°
11
65°
53°
12
72°
52°
13
70°
51°
14
74°
44°
15
63°
43°
16
66°
52°
17
66°
55°
18
67°
56°
19
70°
52°
20
67°
50°
21
70°
51°
22
75°
56°
23
77°
57°
24
78°
57°
25
77°
55°
26
78°
57°
27
79°
57°
28
80°
53°
29
80°
54°
30
79°
55°
31
81°
50°
1
77°
51°
2
73°
51°
3
72°
52°
4
73°
54°
5
74°
61°
6
83°
56°
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 59° to 83°, with overnight lows between 39° and 61°. The average high for May is 70° with an average low of 50°. 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.
