S
M
T
W
T
F
S
26
58°
44°
27
71°
39°
28
62°
46°
29
62°
52°
30
69°
43°
1
67°
38°
2
62°
41°
3
62°
42°
4
75°
57°
5
86°
63°
6
77°
63°
7
68°
44°
8
66°
43°
9
64°
46°
10
71°
52°
11
68°
49°
12
67°
47°
13
70°
52°
14
72°
52°
15
76°
53°
16
77°
55°
17
78°
56°
18
78°
57°
19
77°
57°
20
78°
56°
21
78°
57°
22
75°
49°
23
69°
49°
24
69°
50°
25
70°
52°
26
72°
51°
27
71°
51°
28
71°
53°
29
72°
51°
30
72°
56°
31
75°
60°
1
78°
60°
2
73°
56°
3
74°
58°
4
79°
61°
5
79°
61°
6
82°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lanham
Lanham's May 2026 forecast shows daily high temperatures ranging from 62° to 86°, with overnight lows between 41° and 63°. The average high for May is 73° 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 Lanham. See also: June | July | August.