S
M
T
W
T
F
S
26
61°
36°
27
71°
35°
28
67°
36°
29
64°
40°
30
56°
47°
1
64°
38°
2
58°
47°
3
57°
36°
4
70°
33°
5
75°
43°
6
66°
54°
7
63°
39°
8
61°
40°
9
63°
46°
10
67°
52°
11
62°
45°
12
65°
37°
13
67°
42°
14
63°
51°
15
68°
50°
16
77°
44°
17
89°
52°
18
87°
57°
19
90°
62°
20
90°
63°
21
66°
52°
22
68°
50°
23
57°
49°
24
58°
48°
25
77°
54°
26
81°
59°
27
87°
59°
28
77°
55°
29
76°
56°
30
70°
47°
31
73°
53°
1
70°
50°
2
74°
50°
3
75°
55°
4
73°
58°
5
83°
60°
6
80°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rockfall
Rockfall's May 2026 forecast shows daily high temperatures ranging from 70° to 87°, with overnight lows between 47° and 61°. The average high for May is 77° with an average low of 55°. 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 Rockfall. See also: June | July | August.
