S
M
T
W
T
F
S
26
57°
29°
27
58°
25°
28
60°
25°
29
62°
26°
30
63°
29°
1
67°
25°
2
75°
31°
3
77°
34°
4
77°
33°
5
67°
44°
6
68°
27°
7
75°
52°
8
77°
47°
9
72°
41°
10
82°
36°
11
84°
42°
12
89°
45°
13
89°
49°
14
70°
43°
15
68°
36°
16
63°
39°
17
55°
32°
18
60°
30°
19
66°
23°
20
70°
31°
21
66°
41°
22
73°
31°
23
81°
33°
24
85°
54°
25
85°
49°
26
80°
48°
27
86°
58°
28
86°
50°
29
80°
50°
30
67°
49°
31
73°
49°
1
82°
54°
2
90°
56°
3
88°
55°
4
87°
58°
5
83°
57°
6
82°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Blackrock
Blackrock's May 2026 forecast shows daily high temperatures ranging from 67° to 90°, with overnight lows between 48° and 58°. The average high for May is 82° with an average low of 53°. 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 Blackrock. See also: June | July | August.