S
M
T
W
T
F
S
26
63°
41°
27
61°
43°
28
55°
37°
29
59°
37°
30
54°
39°
1
55°
34°
2
70°
28°
3
73°
46°
4
70°
46°
5
55°
36°
6
59°
28°
7
66°
37°
8
79°
37°
9
68°
41°
10
70°
32°
11
84°
34°
12
79°
55°
13
79°
41°
14
81°
54°
15
91°
52°
16
82°
48°
17
81°
59°
18
58°
48°
19
54°
41°
20
60°
37°
21
66°
48°
22
70°
49°
23
75°
47°
24
84°
61°
25
86°
63°
26
88°
59°
27
88°
61°
28
84°
64°
29
77°
58°
30
79°
58°
31
79°
56°
1
81°
55°
2
79°
52°
3
80°
55°
4
79°
59°
5
82°
59°
6
77°
66°
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 77° to 88°, with overnight lows between 52° and 66°. The average high for May is 82° with an average low of 59°. 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.
