S
M
T
W
T
F
S
26
69°
48°
27
64°
48°
28
55°
43°
29
56°
42°
30
54°
41°
1
50°
38°
2
54°
39°
3
55°
41°
4
58°
46°
5
60°
42°
6
58°
42°
7
59°
40°
8
58°
39°
9
58°
40°
10
59°
42°
11
59°
48°
12
61°
50°
13
64°
49°
14
60°
46°
15
60°
42°
16
61°
42°
17
60°
43°
18
60°
42°
19
62°
43°
20
62°
43°
21
63°
44°
22
65°
53°
23
66°
50°
24
65°
45°
25
64°
45°
26
65°
46°
27
65°
48°
28
66°
53°
29
67°
55°
30
67°
55°
31
68°
56°
1
69°
55°
2
72°
55°
3
74°
57°
4
74°
57°
5
81°
53°
6
72°
59°
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 50° to 81°, with overnight lows between 38° and 59°. The average high for May is 63° with an average low of 47°. 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.
