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°
43°
3
63°
37°
4
79°
45°
5
84°
55°
6
72°
54°
7
66°
43°
8
69°
53°
9
72°
47°
10
80°
51°
11
64°
41°
12
63°
46°
13
70°
57°
14
75°
56°
15
77°
57°
16
72°
54°
17
71°
53°
18
73°
55°
19
77°
54°
20
69°
51°
21
68°
50°
22
67°
52°
23
68°
52°
24
69°
51°
25
71°
53°
26
74°
58°
27
74°
55°
28
75°
56°
29
76°
54°
30
78°
60°
31
80°
61°
1
75°
62°
2
80°
60°
3
80°
62°
4
82°
63°
5
82°
62°
6
81°
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 63° to 82°, with overnight lows between 41° and 63°. The average high for May is 73° 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.
