S
M
T
W
T
F
S
26
50°
41°
27
50°
41°
28
52°
34°
29
55°
32°
30
50°
32°
1
54°
34°
2
68°
30°
3
70°
39°
4
59°
36°
5
50°
30°
6
46°
30°
7
61°
27°
8
72°
39°
9
59°
45°
10
59°
39°
11
72°
34°
12
70°
52°
13
75°
39°
14
79°
54°
15
84°
46°
16
75°
45°
17
73°
52°
18
63°
50°
19
52°
39°
20
61°
30°
21
66°
43°
22
55°
46°
23
66°
48°
24
84°
48°
25
91°
55°
26
88°
63°
27
91°
63°
28
90°
63°
29
90°
64°
30
79°
60°
31
73°
62°
1
73°
59°
2
81°
62°
3
80°
64°
4
76°
62°
5
78°
57°
6
77°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Willmar
Willmar's May 2026 forecast shows daily high temperatures ranging from 73° to 81°, with overnight lows between 57° and 64°. The average high for May is 77° with an average low of 61°. 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 Willmar. See also: June | July | August.
