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
72°
54°
8
74°
59°
9
89°
70°
10
81°
64°
11
78°
60°
12
85°
60°
13
91°
63°
14
91°
70°
15
89°
68°
16
87°
70°
17
88°
75°
18
90°
78°
19
88°
65°
20
81°
64°
21
76°
69°
22
86°
69°
23
84°
65°
24
88°
64°
25
87°
66°
26
87°
66°
27
82°
67°
28
87°
67°
29
91°
72°
30
92°
74°
31
96°
75°
1
95°
75°
2
97°
73°
3
93°
70°
4
88°
69°
5
85°
70°
6
85°
71°
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 85° to 97°, with overnight lows between 69° and 75°. The average high for May is 91° with an average low of 72°. 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.