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
96°
68°
19
100°
70°
20
93°
58°
21
62°
53°
22
59°
54°
23
72°
62°
24
73°
61°
25
78°
62°
26
80°
60°
27
77°
60°
28
77°
61°
29
80°
60°
30
79°
57°
31
83°
58°
1
81°
62°
2
77°
62°
3
74°
62°
4
77°
62°
5
75°
59°
6
77°
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 100°, with overnight lows between 53° and 70°. The average high for May is 79° with an average low of 61°. 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.
