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°
40°
3
68°
51°
4
61°
34°
5
50°
34°
6
51°
34°
7
56°
35°
8
63°
40°
9
65°
43°
10
62°
44°
11
65°
43°
12
72°
49°
13
68°
48°
14
64°
47°
15
67°
46°
16
71°
53°
17
70°
52°
18
70°
53°
19
69°
53°
20
68°
48°
21
64°
45°
22
63°
44°
23
64°
46°
24
65°
45°
25
64°
45°
26
65°
46°
27
65°
46°
28
66°
47°
29
69°
56°
30
68°
52°
31
67°
51°
1
74°
56°
2
77°
58°
3
78°
59°
4
79°
60°
5
78°
60°
6
78°
61°
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 50° to 79°, with overnight lows between 34° and 61°. The average high for May is 67° 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 Willmar. See also: June | July | August.
