S
M
T
W
T
F
S
26
68°
49°
27
64°
45°
28
64°
47°
29
65°
44°
30
63°
42°
1
65°
47°
2
66°
43°
3
65°
44°
4
66°
48°
5
74°
54°
6
76°
54°
7
72°
53°
8
76°
56°
9
78°
57°
10
78°
55°
11
70°
48°
12
65°
49°
13
68°
53°
14
68°
51°
15
69°
52°
16
68°
53°
17
67°
52°
18
79°
50°
19
71°
50°
20
73°
51°
21
71°
49°
22
70°
49°
23
71°
51°
24
72°
51°
25
70°
52°
26
72°
54°
27
73°
53°
28
74°
55°
29
74°
62°
30
81°
55°
31
82°
54°
1
74°
59°
2
79°
58°
3
83°
54°
4
77°
59°
5
82°
55°
6
76°
55°
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 42° and 62°. The average high for May is 72° with an average low of 52°. 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.
