S
M
T
W
T
F
S
26
58°
38°
27
59°
40°
28
57°
40°
29
70°
39°
30
60°
46°
1
64°
43°
2
60°
44°
3
61°
41°
4
60°
40°
5
62°
47°
6
62°
51°
7
73°
50°
8
66°
46°
9
63°
50°
10
66°
44°
11
63°
42°
12
62°
42°
13
64°
44°
14
65°
47°
15
64°
45°
16
68°
54°
17
75°
49°
18
67°
45°
19
66°
48°
20
67°
50°
21
70°
56°
22
77°
57°
23
75°
54°
24
73°
53°
25
72°
57°
26
79°
58°
27
80°
54°
28
70°
51°
29
81°
54°
30
80°
55°
31
78°
55°
1
80°
54°
2
82°
56°
3
81°
59°
4
82°
60°
5
82°
60°
6
78°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Big Rock
Big Rock's May 2026 forecast shows daily high temperatures ranging from 57° to 82°, with overnight lows between 38° and 61°. The average high for May is 70° with an average low of 50°. 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 Big Rock. See also: June | July | August.