S
M
T
W
T
F
S
26
58°
42°
27
69°
41°
28
69°
43°
29
65°
49°
30
62°
48°
1
65°
45°
2
62°
50°
3
60°
45°
4
74°
44°
5
87°
54°
6
75°
56°
7
66°
50°
8
64°
45°
9
66°
52°
10
75°
51°
11
63°
51°
12
70°
44°
13
77°
52°
14
68°
52°
15
66°
49°
16
79°
63°
17
86°
60°
18
85°
64°
19
95°
68°
20
86°
52°
21
68°
46°
22
67°
50°
23
69°
52°
24
72°
55°
25
71°
56°
26
75°
57°
27
76°
58°
28
77°
52°
29
67°
51°
30
68°
56°
31
76°
53°
1
69°
52°
2
70°
51°
3
69°
50°
4
69°
50°
5
70°
57°
6
75°
58°
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 66° to 95°, with overnight lows between 46° and 68°. The average high for May is 74° 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.
