S
M
T
W
T
F
S
26
66°
37°
27
68°
41°
28
63°
46°
29
63°
46°
30
72°
46°
1
72°
46°
2
72°
50°
3
66°
54°
4
61°
50°
5
63°
50°
6
57°
46°
7
57°
45°
8
64°
43°
9
68°
45°
10
55°
41°
11
54°
36°
12
63°
34°
13
55°
45°
14
54°
37°
15
57°
37°
16
59°
41°
17
61°
46°
18
57°
46°
19
63°
52°
20
64°
52°
21
70°
52°
22
N/A
23
87°
61°
24
91°
66°
25
96°
69°
26
93°
58°
27
79°
53°
28
77°
55°
29
80°
58°
30
75°
56°
31
70°
54°
1
73°
56°
2
70°
56°
3
71°
55°
4
63°
46°
5
63°
47°
6
64°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Merton
Merton's May 2026 forecast shows daily high temperatures ranging from 63° to 96°, with overnight lows between 46° and 69°. The average high for May is 77° with an average low of 56°. 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 Merton. See also: June | July | August.
