S
M
T
W
T
F
S
26
63°
40°
27
72°
41°
28
64°
48°
29
52°
43°
30
53°
32°
1
49°
28°
2
54°
29°
3
65°
30°
4
77°
43°
5
61°
42°
6
54°
37°
7
55°
36°
8
66°
30°
9
66°
37°
10
59°
31°
11
59°
39°
12
63°
32°
13
57°
44°
14
67°
41°
15
73°
36°
16
85°
54°
17
74°
53°
18
83°
66°
19
81°
46°
20
63°
38°
21
60°
43°
22
63°
51°
23
67°
51°
24
73°
52°
25
73°
53°
26
76°
55°
27
76°
53°
28
75°
52°
29
75°
53°
30
78°
53°
31
77°
50°
1
73°
56°
2
77°
56°
3
72°
55°
4
69°
53°
5
71°
54°
6
74°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Merrill
Merrill's May 2026 forecast shows daily high temperatures ranging from 60° to 83°, with overnight lows between 38° and 66°. The average high for May is 73° with an average low of 52°. 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 Merrill. See also: June | July | August.
