S
M
T
W
T
F
S
26
65°
46°
27
67°
46°
28
70°
42°
29
70°
47°
30
67°
51°
1
66°
53°
2
66°
54°
3
67°
47°
4
68°
45°
5
67°
46°
6
70°
45°
7
66°
54°
8
66°
53°
9
65°
51°
10
64°
51°
11
68°
53°
12
64°
51°
13
69°
49°
14
66°
48°
15
63°
51°
16
65°
50°
17
64°
47°
18
74°
44°
19
78°
45°
20
64°
53°
21
66°
48°
22
66°
52°
23
67°
53°
24
70°
51°
25
68°
52°
26
66°
50°
27
64°
51°
28
69°
48°
29
70°
49°
30
72°
46°
31
75°
46°
1
74°
47°
2
75°
48°
3
74°
49°
4
76°
50°
5
73°
50°
6
72°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Los Alamos
Los Alamos's May 2026 forecast shows daily high temperatures ranging from 64° to 76°, with overnight lows between 46° and 52°. The average high for May is 71° with an average low of 49°. 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 Los Alamos. See also: June | July | August.