S
M
T
W
T
F
S
26
54°
29°
27
57°
23°
28
63°
24°
29
67°
25°
30
71°
32°
1
76°
34°
2
73°
41°
3
74°
46°
4
77°
34°
5
76°
40°
6
79°
36°
7
78°
33°
8
74°
33°
9
79°
33°
10
82°
36°
11
84°
37°
12
82°
39°
13
61°
33°
14
73°
26°
15
67°
30°
16
55°
34°
17
58°
34°
18
65°
26°
19
71°
37°
20
77°
41°
21
81°
38°
22
82°
45°
23
84°
44°
24
82°
43°
25
76°
36°
26
64°
32°
27
72°
37°
28
74°
42°
29
70°
42°
30
72°
42°
31
74°
45°
1
73°
40°
2
77°
46°
3
78°
46°
4
78°
45°
5
77°
46°
6
78°
47°
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 64° to 84°, with overnight lows between 32° and 47°. The average high for May is 76° with an average low of 42°. 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.
