S
M
T
W
T
F
S
26
70°
48°
27
67°
51°
28
69°
52°
29
66°
50°
30
65°
49°
1
68°
50°
2
69°
51°
3
68°
47°
4
67°
55°
5
70°
55°
6
67°
53°
7
67°
50°
8
72°
54°
9
68°
54°
10
75°
58°
11
77°
57°
12
76°
56°
13
70°
58°
14
78°
57°
15
73°
55°
16
73°
55°
17
72°
58°
18
78°
60°
19
79°
56°
20
78°
51°
21
70°
52°
22
70°
56°
23
71°
53°
24
74°
59°
25
80°
61°
26
82°
62°
27
79°
62°
28
73°
61°
29
74°
62°
30
74°
62°
31
78°
63°
1
83°
63°
2
82°
61°
3
82°
63°
4
83°
64°
5
78°
62°
6
84°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fort Belvoir
Fort Belvoir's May 2026 forecast shows daily high temperatures ranging from 65° to 84°, with overnight lows between 47° and 64°. The average high for May is 74° with an average low of 56°. 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 Fort Belvoir. See also: June | July | August.