S
M
T
W
T
F
S
26
81°
61°
27
66°
52°
28
75°
54°
29
84°
61°
30
79°
64°
1
72°
61°
2
63°
52°
3
72°
46°
4
79°
48°
5
82°
52°
6
88°
57°
7
79°
66°
8
73°
59°
9
77°
59°
10
86°
64°
11
86°
64°
12
72°
59°
13
80°
56°
14
82°
50°
15
82°
55°
16
90°
64°
17
91°
65°
18
89°
62°
19
91°
63°
20
90°
64°
21
87°
63°
22
86°
63°
23
86°
66°
24
84°
62°
25
84°
61°
26
86°
62°
27
88°
65°
28
87°
66°
29
88°
66°
30
88°
65°
31
87°
65°
1
88°
66°
2
88°
66°
3
87°
65°
4
85°
66°
5
85°
66°
6
88°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Allendale
Allendale's May 2026 forecast shows daily high temperatures ranging from 80° to 91°, with overnight lows between 50° and 67°. The average high for May is 87° with an average low of 63°. 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 Allendale. See also: June | July | August.
