S
M
T
W
T
F
S
26
55°
45°
27
72°
41°
28
63°
50°
29
59°
55°
30
66°
45°
1
68°
37°
2
59°
41°
3
62°
41°
4
75°
52°
5
85°
64°
6
74°
62°
7
72°
42°
8
60°
43°
9
63°
46°
10
70°
50°
11
68°
48°
12
66°
48°
13
69°
53°
14
72°
53°
15
75°
54°
16
77°
57°
17
76°
58°
18
78°
58°
19
78°
57°
20
77°
59°
21
78°
59°
22
75°
51°
23
69°
50°
24
69°
52°
25
70°
53°
26
72°
53°
27
71°
52°
28
71°
54°
29
72°
53°
30
72°
58°
31
75°
61°
1
78°
61°
2
73°
58°
3
74°
59°
4
79°
62°
5
79°
62°
6
82°
63°
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 59° to 85°, with overnight lows between 41° and 64°. The average high for May is 73° with an average low of 54°. 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.
