S
M
T
W
T
F
S
26
63°
44°
27
72°
45°
28
73°
52°
29
56°
47°
30
52°
38°
1
45°
35°
2
45°
37°
3
60°
34°
4
72°
48°
5
69°
49°
6
57°
44°
7
59°
36°
8
59°
44°
9
69°
50°
10
60°
43°
11
61°
35°
12
66°
37°
13
67°
44°
14
59°
42°
15
68°
34°
16
69°
52°
17
82°
56°
18
87°
66°
19
87°
66°
20
67°
49°
21
67°
48°
22
62°
47°
23
69°
55°
24
67°
58°
25
75°
56°
26
78°
49°
27
78°
59°
28
71°
50°
29
76°
46°
30
71°
45°
31
74°
50°
1
74°
50°
2
75°
51°
3
78°
53°
4
81°
59°
5
83°
63°
6
77°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Arlington
Arlington's May 2026 forecast shows daily high temperatures ranging from 71° to 83°, with overnight lows between 45° and 63°. The average high for May is 77° with an average low of 54°. 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 Arlington. See also: June | July | August.