S
M
T
W
T
F
S
26
79°
52°
27
77°
55°
28
61°
50°
29
61°
43°
30
64°
37°
1
59°
40°
2
61°
43°
3
74°
54°
4
77°
52°
5
57°
44°
6
56°
42°
7
60°
44°
8
70°
49°
9
69°
50°
10
72°
52°
11
72°
54°
12
73°
53°
13
72°
52°
14
75°
51°
15
70°
57°
16
69°
56°
17
71°
60°
18
77°
60°
19
77°
61°
20
78°
61°
21
77°
62°
22
78°
57°
23
72°
53°
24
71°
55°
25
73°
62°
26
75°
60°
27
74°
57°
28
73°
55°
29
72°
54°
30
76°
63°
31
78°
61°
1
76°
64°
2
84°
64°
3
83°
61°
4
75°
57°
5
76°
56°
6
76°
57°
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 56° to 84°, with overnight lows between 40° and 64°. The average high for May is 72° with an average low of 55°. 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.
