S
M
T
W
T
F
S
26
68°
39°
27
68°
40°
28
67°
38°
29
68°
38°
30
70°
40°
1
70°
40°
2
71°
43°
3
76°
44°
4
71°
41°
5
69°
40°
6
71°
41°
7
72°
43°
8
73°
42°
9
77°
45°
10
80°
48°
11
82°
47°
12
80°
46°
13
80°
44°
14
74°
43°
15
74°
43°
16
75°
44°
17
75°
44°
18
76°
47°
19
84°
49°
20
84°
52°
21
82°
55°
22
83°
53°
23
87°
55°
24
91°
52°
25
87°
53°
26
86°
54°
27
88°
55°
28
94°
54°
29
94°
55°
30
93°
55°
31
93°
54°
1
94°
54°
2
95°
55°
3
93°
55°
4
89°
54°
5
85°
49°
6
83°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Alamo
Alamo's May 2026 forecast shows daily high temperatures ranging from 67° to 95°, with overnight lows between 38° and 55°. The average high for May is 80° with an average low of 48°. 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 Alamo. See also: June | July | August.
