S
M
T
W
T
F
S
26
77°
56°
27
76°
52°
28
63°
47°
29
62°
42°
30
67°
38°
1
65°
33°
2
63°
37°
3
77°
45°
4
82°
52°
5
59°
49°
6
61°
43°
7
69°
38°
8
62°
47°
9
83°
50°
10
69°
45°
11
81°
43°
12
81°
49°
13
78°
50°
14
78°
61°
15
88°
64°
16
83°
64°
17
86°
66°
18
80°
56°
19
72°
52°
20
71°
56°
21
74°
55°
22
78°
61°
23
77°
58°
24
79°
59°
25
76°
57°
26
81°
63°
27
81°
63°
28
78°
62°
29
77°
62°
30
73°
58°
31
74°
60°
1
74°
63°
2
76°
64°
3
78°
64°
4
79°
63°
5
82°
65°
6
81°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mendon
Mendon's May 2026 forecast shows daily high temperatures ranging from 71° to 88°, with overnight lows between 49° and 66°. The average high for May is 78° with an average low of 60°. 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 Mendon. See also: June | July | August.
