S
M
T
W
T
F
S
26
62°
45°
27
67°
45°
28
60°
43°
29
54°
43°
30
50°
38°
1
48°
30°
2
47°
35°
3
56°
44°
4
68°
51°
5
57°
40°
6
52°
39°
7
48°
34°
8
55°
42°
9
57°
43°
10
61°
45°
11
62°
44°
12
63°
45°
13
62°
43°
14
61°
48°
15
65°
44°
16
63°
42°
17
64°
52°
18
71°
53°
19
69°
54°
20
72°
55°
21
73°
54°
22
71°
55°
23
73°
48°
24
65°
45°
25
65°
50°
26
68°
55°
27
73°
55°
28
68°
53°
29
68°
49°
30
69°
52°
31
68°
47°
1
68°
50°
2
69°
54°
3
69°
49°
4
70°
48°
5
68°
49°
6
69°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hillsdale
Hillsdale's May 2026 forecast shows daily high temperatures ranging from 47° to 73°, with overnight lows between 30° and 55°. The average high for May is 64° 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 Hillsdale. See also: June | July | August.