S
M
T
W
T
F
S
26
86°
69°
27
91°
67°
28
80°
69°
29
69°
58°
30
63°
58°
1
N/A
2
75°
56°
3
81°
59°
4
82°
65°
5
83°
67°
6
72°
51°
7
71°
55°
8
77°
60°
9
81°
65°
10
80°
64°
11
84°
63°
12
81°
64°
13
80°
62°
14
82°
61°
15
84°
68°
16
84°
68°
17
83°
67°
18
84°
68°
19
85°
69°
20
84°
69°
21
81°
68°
22
78°
68°
23
79°
66°
24
84°
69°
25
82°
69°
26
79°
62°
27
79°
63°
28
82°
69°
29
84°
70°
30
86°
69°
31
88°
70°
1
88°
71°
2
87°
71°
3
89°
72°
4
90°
72°
5
89°
71°
6
86°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Rockwall
Rockwall's May 2026 forecast shows daily high temperatures ranging from 71° to 90°, with overnight lows between 51° and 72°. The average high for May is 82° with an average low of 66°. 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 Rockwall. See also: June | July | August.
