S
M
T
W
T
F
S
26
84°
64°
27
78°
64°
28
74°
57°
29
87°
64°
30
81°
69°
1
69°
60°
2
70°
54°
3
75°
46°
4
80°
47°
5
83°
52°
6
86°
63°
7
80°
68°
8
73°
63°
9
69°
63°
10
82°
64°
11
87°
61°
12
73°
58°
13
80°
58°
14
81°
58°
15
80°
50°
16
88°
57°
17
91°
67°
18
88°
63°
19
90°
64°
20
90°
68°
21
90°
68°
22
90°
69°
23
N/A
24
86°
71°
25
81°
69°
26
83°
70°
27
84°
71°
28
85°
70°
29
84°
69°
30
83°
67°
31
81°
68°
1
84°
65°
2
83°
67°
3
84°
67°
4
86°
68°
5
84°
69°
6
88°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Ashburn
Ashburn's May 2026 forecast shows daily high temperatures ranging from 81° to 88°, with overnight lows between 65° and 71°. The average high for May is 84° with an average low of 68°. 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.
