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°
55°
7
66°
46°
8
73°
43°
9
75°
55°
10
81°
50°
11
63°
46°
12
72°
41°
13
75°
54°
14
63°
50°
15
72°
50°
16
84°
46°
17
88°
59°
18
95°
63°
19
97°
70°
20
94°
59°
21
64°
56°
22
59°
52°
23
59°
52°
24
66°
57°
25
74°
60°
26
75°
61°
27
77°
60°
28
76°
61°
29
76°
58°
30
79°
61°
31
80°
62°
1
81°
60°
2
80°
58°
3
80°
62°
4
82°
63°
5
82°
64°
6
83°
64°
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 94°, with overnight lows between 52° and 64°. The average high for May is 76° with an average low of 59°. 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.
