S
M
T
W
T
F
S
26
64°
47°
27
64°
42°
28
67°
50°
29
69°
49°
30
74°
48°
1
67°
48°
2
67°
45°
3
64°
50°
4
75°
50°
5
65°
45°
6
64°
45°
7
66°
47°
8
70°
46°
9
67°
47°
10
65°
46°
11
66°
46°
12
67°
49°
13
77°
57°
14
79°
57°
15
79°
58°
16
80°
58°
17
77°
57°
18
73°
55°
19
73°
54°
20
78°
58°
21
77°
53°
22
70°
51°
23
70°
53°
24
72°
51°
25
73°
55°
26
76°
60°
27
80°
61°
28
82°
55°
29
81°
54°
30
72°
57°
31
74°
61°
1
82°
55°
2
78°
54°
3
75°
53°
4
74°
54°
5
75°
59°
6
77°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Ashburn
Ashburn's May 2026 forecast shows daily high temperatures ranging from 64° to 82°, with overnight lows between 42° and 62°. The average high for May is 73° with an average low of 52°. 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 Ashburn. See also: June | July | August.
