S
M
T
W
T
F
S
26
66°
51°
27
68°
48°
28
76°
42°
29
81°
44°
30
84°
46°
1
82°
52°
2
71°
55°
3
70°
54°
4
64°
51°
5
67°
53°
6
78°
57°
7
82°
53°
8
84°
54°
9
88°
53°
10
86°
54°
11
94°
56°
12
85°
56°
13
83°
53°
14
78°
52°
15
85°
60°
16
87°
57°
17
86°
56°
18
82°
54°
19
81°
54°
20
81°
53°
21
94°
62°
22
78°
50°
23
79°
50°
24
80°
51°
25
79°
52°
26
80°
50°
27
84°
51°
28
79°
51°
29
86°
55°
30
87°
57°
31
87°
57°
1
86°
56°
2
86°
58°
3
82°
56°
4
81°
57°
5
81°
56°
6
82°
55°
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 78° to 94°, with overnight lows between 50° and 62°. The average high for May is 84° with an average low of 55°. 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.
