S
M
T
W
T
F
S
26
77°
58°
27
65°
52°
28
75°
47°
29
82°
56°
30
74°
60°
1
68°
59°
2
59°
43°
3
71°
49°
4
80°
55°
5
80°
58°
6
83°
66°
7
80°
53°
8
73°
52°
9
76°
58°
10
79°
61°
11
80°
61°
12
79°
60°
13
79°
61°
14
81°
61°
15
82°
59°
16
79°
56°
17
80°
61°
18
80°
63°
19
81°
63°
20
86°
64°
21
85°
64°
22
80°
58°
23
80°
57°
24
79°
59°
25
81°
62°
26
81°
61°
27
82°
60°
28
81°
60°
29
82°
62°
30
83°
64°
31
82°
65°
1
83°
67°
2
85°
66°
3
83°
67°
4
83°
67°
5
84°
68°
6
85°
67°
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 86°, with overnight lows between 43° and 68°. The average high for May is 80° with an average low of 61°. 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.