S
M
T
W
T
F
S
26
63°
53°
27
72°
59°
28
63°
43°
29
63°
37°
30
64°
35°
1
69°
34°
2
71°
37°
3
88°
43°
4
87°
59°
5
59°
44°
6
59°
44°
7
79°
40°
8
78°
45°
9
88°
44°
10
73°
42°
11
82°
38°
12
94°
57°
13
83°
57°
14
94°
61°
15
96°
65°
16
97°
66°
17
94°
71°
18
95°
52°
19
64°
47°
20
68°
46°
21
71°
54°
22
78°
61°
23
76°
55°
24
86°
49°
25
89°
60°
26
86°
61°
27
80°
64°
28
76°
62°
29
77°
61°
30
76°
57°
31
76°
57°
1
80°
56°
2
82°
57°
3
84°
57°
4
84°
61°
5
86°
62°
6
87°
63°
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 76° to 89°, with overnight lows between 56° and 64°. The average high for May is 82° with an average low of 60°. 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.