S
M
T
W
T
F
S
26
66°
51°
27
68°
48°
28
76°
42°
29
81°
44°
30
84°
46°
1
84°
56°
2
74°
51°
3
75°
52°
4
71°
53°
5
70°
52°
6
80°
54°
7
85°
52°
8
85°
56°
9
84°
58°
10
90°
57°
11
89°
57°
12
91°
58°
13
91°
58°
14
92°
59°
15
76°
52°
16
76°
51°
17
77°
49°
18
76°
52°
19
76°
48°
20
79°
51°
21
81°
53°
22
84°
54°
23
86°
57°
24
87°
57°
25
86°
56°
26
84°
55°
27
81°
54°
28
79°
53°
29
78°
52°
30
79°
52°
31
79°
53°
1
80°
52°
2
81°
53°
3
83°
55°
4
86°
57°
5
84°
55°
6
83°
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 70° to 92°, with overnight lows between 48° and 59°. The average high for May is 82° with an average low of 54°. 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.
