S
M
T
W
T
F
S
26
55°
42°
27
58°
41°
28
72°
43°
29
60°
44°
30
62°
47°
1
66°
45°
2
62°
44°
3
62°
42°
4
61°
41°
5
63°
46°
6
64°
53°
7
74°
51°
8
67°
47°
9
64°
51°
10
65°
46°
11
64°
43°
12
63°
43°
13
64°
45°
14
66°
49°
15
65°
48°
16
68°
55°
17
75°
52°
18
69°
46°
19
67°
47°
20
68°
49°
21
72°
58°
22
77°
59°
23
77°
57°
24
76°
57°
25
74°
59°
26
80°
61°
27
81°
55°
28
71°
52°
29
81°
58°
30
82°
56°
31
79°
54°
1
81°
55°
2
83°
57°
3
80°
60°
4
81°
61°
5
79°
61°
6
76°
62°
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 55° to 83°, with overnight lows between 41° and 62°. The average high for May is 70° with an average low of 51°. 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.
