S
M
T
W
T
F
S
26
64°
42°
27
55°
49°
28
59°
42°
29
49°
37°
30
44°
28°
1
44°
28°
2
59°
23°
3
68°
45°
4
67°
41°
5
46°
35°
6
46°
35°
7
50°
33°
8
64°
28°
9
57°
35°
10
55°
28°
11
57°
26°
12
70°
37°
13
60°
37°
14
70°
31°
15
82°
51°
16
80°
48°
17
52°
46°
18
78°
50°
19
64°
45°
20
60°
41°
21
63°
31°
22
66°
45°
23
67°
46°
24
76°
52°
25
82°
45°
26
88°
50°
27
81°
51°
28
76°
42°
29
85°
41°
30
74°
41°
31
79°
48°
1
79°
45°
2
77°
44°
3
79°
50°
4
78°
55°
5
78°
54°
6
74°
52°
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 74° to 79°, with overnight lows between 41° and 55°. The average high for May is 77° with an average low of 49°. 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.
