S
M
T
W
T
F
S
26
80°
59°
27
83°
55°
28
73°
58°
29
78°
60°
30
70°
50°
1
73°
46°
2
68°
49°
3
69°
39°
4
81°
44°
5
79°
50°
6
71°
60°
7
69°
47°
8
74°
41°
9
79°
51°
10
85°
49°
11
74°
51°
12
79°
46°
13
81°
54°
14
72°
48°
15
74°
54°
16
83°
58°
17
88°
64°
18
87°
67°
19
83°
65°
20
81°
60°
21
77°
53°
22
79°
56°
23
77°
57°
24
82°
57°
25
81°
58°
26
79°
59°
27
80°
61°
28
81°
54°
29
79°
59°
30
77°
58°
31
75°
54°
1
75°
54°
2
76°
56°
3
77°
55°
4
81°
60°
5
82°
61°
6
83°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Round Rock
Round Rock's May 2026 forecast shows daily high temperatures ranging from 74° to 88°, with overnight lows between 53° and 67°. The average high for May is 80° with an average low of 58°. 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 Round Rock. See also: June | July | August.
