S
M
T
W
T
F
S
26
65°
50°
27
65°
48°
28
64°
47°
29
63°
47°
30
64°
48°
1
64°
47°
2
66°
46°
3
64°
46°
4
64°
45°
5
63°
45°
6
65°
46°
7
66°
51°
8
75°
51°
9
69°
53°
10
66°
49°
11
67°
47°
12
65°
46°
13
64°
48°
14
66°
47°
15
66°
49°
16
67°
48°
17
68°
54°
18
75°
52°
19
69°
49°
20
68°
50°
21
68°
56°
22
69°
58°
23
71°
59°
24
78°
60°
25
79°
61°
26
79°
60°
27
80°
62°
28
81°
62°
29
82°
60°
30
83°
60°
31
81°
57°
1
74°
55°
2
72°
59°
3
75°
62°
4
76°
62°
5
75°
63°
6
79°
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 83°, with overnight lows between 45° and 63°. The average high for May is 70° 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.
