S
M
T
W
T
F
S
26
59°
43°
27
69°
43°
28
64°
46°
29
61°
49°
30
63°
49°
1
66°
46°
2
64°
50°
3
63°
46°
4
74°
46°
5
86°
57°
6
73°
56°
7
67°
50°
8
65°
48°
9
69°
52°
10
77°
50°
11
63°
52°
12
68°
46°
13
76°
50°
14
68°
52°
15
69°
51°
16
83°
51°
17
91°
64°
18
90°
67°
19
99°
73°
20
96°
67°
21
67°
56°
22
68°
56°
23
59°
50°
24
58°
52°
25
78°
56°
26
82°
58°
27
86°
65°
28
80°
59°
29
80°
60°
30
74°
52°
31
76°
57°
1
78°
58°
2
78°
59°
3
80°
60°
4
82°
62°
5
85°
66°
6
84°
67°
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 86°, with overnight lows between 52° and 67°. The average high for May is 80° 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.