S
M
T
W
T
F
S
26
84°
66°
27
94°
74°
28
84°
71°
29
71°
60°
30
64°
60°
1
64°
56°
2
77°
49°
3
82°
54°
4
82°
61°
5
91°
64°
6
64°
54°
7
75°
61°
8
78°
64°
9
87°
67°
10
84°
61°
11
80°
62°
12
84°
67°
13
86°
68°
14
83°
67°
15
82°
68°
16
83°
67°
17
82°
67°
18
83°
70°
19
84°
69°
20
82°
65°
21
85°
68°
22
81°
68°
23
78°
67°
24
79°
69°
25
78°
68°
26
80°
69°
27
80°
68°
28
81°
68°
29
80°
67°
30
81°
67°
31
82°
66°
1
82°
67°
2
83°
67°
3
84°
70°
4
83°
72°
5
84°
72°
6
85°
73°
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 75° to 87°, with overnight lows between 61° and 73°. The average high for May is 82° with an average low of 67°. 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.