S
M
T
W
T
F
S
26
66°
40°
27
69°
42°
28
70°
46°
29
69°
42°
30
71°
46°
1
72°
47°
2
68°
47°
3
71°
48°
4
72°
47°
5
65°
42°
6
63°
41°
7
63°
39°
8
65°
40°
9
66°
42°
10
66°
44°
11
72°
45°
12
74°
47°
13
73°
48°
14
67°
42°
15
67°
41°
16
68°
43°
17
69°
47°
18
74°
45°
19
69°
45°
20
71°
47°
21
70°
43°
22
68°
45°
23
71°
44°
24
69°
44°
25
69°
47°
26
71°
47°
27
70°
49°
28
70°
50°
29
71°
49°
30
71°
48°
31
73°
47°
1
80°
47°
2
76°
46°
3
72°
46°
4
72°
47°
5
71°
46°
6
74°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Merlin
Merlin's May 2026 forecast shows daily high temperatures ranging from 63° to 80°, with overnight lows between 39° and 52°. The average high for May is 70° with an average low of 45°. 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 Merlin. See also: June | July | August.