S
M
T
W
T
F
S
26
58°
46°
27
70°
45°
28
63°
50°
29
62°
54°
30
70°
49°
1
67°
44°
2
63°
49°
3
64°
44°
4
77°
51°
5
86°
61°
6
71°
56°
7
64°
46°
8
68°
55°
9
72°
50°
10
79°
53°
11
63°
44°
12
65°
44°
13
67°
48°
14
68°
50°
15
75°
55°
16
73°
55°
17
70°
53°
18
74°
54°
19
78°
55°
20
71°
51°
21
70°
52°
22
69°
52°
23
70°
53°
24
71°
52°
25
72°
54°
26
76°
58°
27
75°
56°
28
76°
57°
29
77°
54°
30
79°
61°
31
82°
62°
1
77°
62°
2
82°
60°
3
82°
62°
4
83°
63°
5
83°
63°
6
84°
64°
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 63° to 84°, with overnight lows between 44° and 64°. The average high for May is 74° with an average low of 55°. 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.