S
M
T
W
T
F
S
26
53°
40°
27
67°
36°
28
54°
47°
29
54°
49°
30
N/A
1
63°
43°
2
57°
39°
3
59°
42°
4
73°
53°
5
79°
55°
6
66°
45°
7
60°
39°
8
58°
40°
9
62°
46°
10
68°
47°
11
67°
50°
12
66°
50°
13
68°
51°
14
70°
49°
15
67°
51°
16
68°
51°
17
67°
50°
18
68°
54°
19
76°
55°
20
76°
55°
21
75°
56°
22
77°
55°
23
77°
55°
24
78°
54°
25
71°
50°
26
70°
55°
27
70°
56°
28
78°
57°
29
76°
56°
30
75°
55°
31
76°
54°
1
72°
50°
2
69°
50°
3
70°
49°
4
72°
49°
5
71°
50°
6
72°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Round Top
Round Top's May 2026 forecast shows daily high temperatures ranging from 57° to 79°, with overnight lows between 39° and 57°. 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 Round Top. See also: June | July | August.
