S
M
T
W
T
F
S
26
62°
48°
27
70°
41°
28
69°
44°
29
69°
51°
30
73°
43°
1
70°
51°
2
58°
45°
3
64°
40°
4
72°
51°
5
78°
57°
6
75°
60°
7
72°
50°
8
66°
47°
9
71°
52°
10
70°
51°
11
70°
51°
12
68°
54°
13
73°
53°
14
73°
58°
15
72°
58°
16
72°
57°
17
71°
58°
18
75°
60°
19
79°
60°
20
80°
59°
21
80°
61°
22
81°
61°
23
81°
62°
24
80°
61°
25
81°
61°
26
77°
60°
27
80°
61°
28
81°
62°
29
79°
62°
30
82°
61°
31
82°
63°
1
81°
62°
2
76°
62°
3
82°
58°
4
74°
57°
5
75°
57°
6
75°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Blackstone
Blackstone's May 2026 forecast shows daily high temperatures ranging from 58° to 82°, with overnight lows between 40° and 63°. The average high for May is 75° with an average low of 56°. 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 Blackstone. See also: June | July | August.
