S
M
T
W
T
F
S
26
85°
71°
27
87°
72°
28
87°
72°
29
86°
73°
30
88°
74°
31
89°
73°
1
88°
72°
2
87°
70°
3
83°
67°
4
83°
68°
5
82°
67°
6
81°
66°
7
83°
71°
8
85°
70°
9
88°
72°
10
88°
72°
11
87°
71°
12
86°
72°
13
87°
71°
14
88°
70°
15
87°
72°
16
83°
72°
17
82°
71°
18
88°
72°
19
87°
71°
20
85°
65°
21
87°
63°
22
81°
63°
23
81°
65°
24
82°
66°
25
81°
64°
26
81°
69°
27
82°
64°
28
81°
63°
29
80°
63°
30
80°
61°
31
81°
61°
1
79°
62°
2
79°
63°
3
78°
64°
4
77°
62°
5
80°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Arlington
Arlington's August 2026 forecast shows daily high temperatures ranging from 77° to 89°, with overnight lows between 61° and 74°. The average high for August is 84° with an average low of 68°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Arlington. See also: September | October | November.
