S
M
T
W
T
F
S
26
61°
39°
27
72°
36°
28
64°
36°
29
63°
48°
30
61°
46°
1
64°
39°
2
59°
45°
3
61°
43°
4
73°
37°
5
82°
45°
6
68°
54°
7
64°
45°
8
63°
39°
9
63°
46°
10
73°
48°
11
63°
45°
12
68°
39°
13
72°
54°
14
65°
48°
15
67°
46°
16
81°
58°
17
85°
60°
18
80°
58°
19
90°
63°
20
79°
53°
21
71°
52°
22
71°
54°
23
70°
52°
24
71°
53°
25
70°
50°
26
73°
51°
27
70°
51°
28
69°
49°
29
68°
51°
30
70°
56°
31
76°
53°
1
70°
51°
2
71°
50°
3
69°
49°
4
71°
50°
5
72°
57°
6
77°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mendham Township
Mendham Township's May 2026 forecast shows daily high temperatures ranging from 65° to 90°, with overnight lows between 46° and 63°. The average high for May is 73° with an average low of 53°. 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 Mendham Township. See also: June | July | August.