S
M
T
W
T
F
S
26
50°
34°
27
59°
36°
28
59°
34°
29
61°
36°
30
54°
37°
1
66°
32°
2
73°
30°
3
73°
43°
4
79°
36°
5
46°
36°
6
50°
36°
7
73°
36°
8
73°
48°
9
77°
45°
10
70°
48°
11
88°
50°
12
79°
54°
13
84°
46°
14
90°
52°
15
88°
46°
16
84°
50°
17
72°
45°
18
45°
41°
19
61°
34°
20
61°
45°
21
59°
41°
22
69°
48°
23
72°
50°
24
86°
53°
25
82°
55°
26
79°
55°
27
76°
58°
28
87°
53°
29
84°
52°
30
84°
54°
31
80°
55°
1
83°
55°
2
80°
54°
3
81°
52°
4
80°
57°
5
74°
57°
6
75°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Alvin
Alvin's May 2026 forecast shows daily high temperatures ranging from 59° to 87°, with overnight lows between 41° and 58°. The average high for May is 78° with an average low of 53°. 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 Alvin. See also: June | July | August.