S
M
T
W
T
F
S
26
66°
42°
27
65°
39°
28
67°
38°
29
73°
34°
30
77°
41°
1
79°
41°
2
82°
42°
3
76°
49°
4
66°
45°
5
66°
52°
6
76°
52°
7
82°
52°
8
92°
57°
9
94°
58°
10
95°
58°
11
96°
53°
12
97°
60°
13
100°
60°
14
99°
59°
15
95°
58°
16
87°
52°
17
89°
58°
18
89°
57°
19
88°
58°
20
90°
58°
21
90°
59°
22
89°
58°
23
91°
59°
24
92°
60°
25
92°
60°
26
93°
59°
27
92°
60°
28
88°
58°
29
83°
56°
30
83°
58°
31
84°
57°
1
85°
58°
2
87°
60°
3
88°
61°
4
89°
62°
5
93°
63°
6
92°
61°
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 66° to 100°, with overnight lows between 45° and 63°. The average high for May is 88° with an average low of 57°. 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.