S
M
T
W
T
F
S
26
83°
62°
27
87°
62°
28
64°
50°
29
67°
47°
30
69°
47°
1
70°
45°
2
73°
46°
3
85°
50°
4
81°
60°
5
71°
49°
6
65°
47°
7
74°
40°
8
83°
50°
9
85°
51°
10
63°
52°
11
78°
45°
12
83°
53°
13
84°
58°
14
86°
59°
15
88°
70°
16
87°
69°
17
88°
70°
18
91°
75°
19
79°
54°
20
61°
54°
21
66°
56°
22
80°
59°
23
78°
61°
24
84°
63°
25
86°
63°
26
79°
63°
27
77°
64°
28
77°
63°
29
82°
65°
30
82°
63°
31
76°
59°
1
80°
62°
2
80°
60°
3
78°
60°
4
81°
61°
5
85°
64°
6
85°
68°
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 86°, with overnight lows between 59° and 68°. The average high for May is 81° with an average low of 63°. 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.