S
M
T
W
T
F
S
26
70°
45°
27
62°
46°
28
54°
41°
29
62°
37°
30
58°
43°
1
59°
40°
2
68°
33°
3
76°
53°
4
80°
48°
5
60°
46°
6
62°
37°
7
73°
43°
8
79°
51°
9
77°
48°
10
74°
43°
11
84°
47°
12
81°
57°
13
80°
46°
14
83°
59°
15
92°
59°
16
85°
57°
17
84°
60°
18
60°
51°
19
62°
45°
20
59°
42°
21
67°
50°
22
74°
48°
23
77°
54°
24
81°
61°
25
85°
61°
26
82°
62°
27
77°
65°
28
78°
65°
29
79°
60°
30
75°
59°
31
81°
62°
1
84°
62°
2
83°
63°
3
79°
60°
4
80°
61°
5
76°
63°
6
75°
66°
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 74° to 85°, with overnight lows between 48° and 66°. The average high for May is 79° with an average low of 61°. 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.