S
M
T
W
T
F
S
26
63°
46°
27
68°
50°
28
65°
52°
29
68°
50°
30
66°
49°
1
62°
46°
2
59°
45°
3
61°
44°
4
66°
47°
5
65°
50°
6
73°
52°
7
67°
53°
8
66°
48°
9
66°
50°
10
67°
47°
11
66°
50°
12
71°
56°
13
68°
56°
14
68°
55°
15
69°
52°
16
68°
50°
17
68°
49°
18
69°
51°
19
67°
51°
20
67°
50°
21
68°
52°
22
69°
53°
23
71°
56°
24
75°
60°
25
75°
55°
26
71°
52°
27
71°
53°
28
72°
59°
29
72°
61°
30
73°
62°
31
75°
61°
1
75°
61°
2
74°
62°
3
74°
62°
4
75°
61°
5
83°
55°
6
76°
56°
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 83°, with overnight lows between 44° and 62°. The average high for May is 69° with an average low of 53°. 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.
