S
M
T
W
T
F
S
26
58°
42°
27
69°
45°
28
65°
51°
29
54°
36°
30
52°
32°
1
48°
30°
2
57°
28°
3
68°
45°
4
75°
44°
5
55°
37°
6
51°
38°
7
53°
36°
8
59°
38°
9
65°
44°
10
61°
41°
11
62°
44°
12
66°
43°
13
65°
46°
14
65°
47°
15
69°
46°
16
70°
47°
17
73°
52°
18
68°
51°
19
71°
52°
20
70°
52°
21
69°
44°
22
64°
43°
23
65°
45°
24
66°
44°
25
66°
45°
26
67°
46°
27
66°
46°
28
67°
47°
29
68°
51°
30
69°
56°
31
74°
52°
1
71°
53°
2
74°
57°
3
77°
57°
4
79°
58°
5
79°
59°
6
78°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Delavan
Delavan's May 2026 forecast shows daily high temperatures ranging from 51° to 79°, with overnight lows between 36° and 60°. The average high for May is 68° with an average low of 48°. 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 Delavan. See also: June | July | August.
