S
M
T
W
T
F
S
26
95°
75°
27
94°
73°
28
92°
79°
29
87°
70°
30
89°
67°
31
82°
66°
1
77°
70°
2
79°
70°
3
87°
67°
4
88°
65°
5
88°
64°
6
84°
70°
7
89°
69°
8
87°
69°
9
91°
67°
10
93°
74°
11
94°
76°
12
93°
76°
13
96°
77°
14
97°
77°
15
96°
74°
16
98°
77°
17
89°
68°
18
89°
64°
19
82°
69°
20
88°
71°
21
88°
69°
22
90°
68°
23
85°
64°
24
86°
63°
25
90°
69°
26
88°
70°
27
89°
67°
28
88°
63°
29
91°
65°
30
93°
64°
31
95°
72°
1
97°
71°
2
98°
72°
3
98°
73°
4
100°
74°
5
101°
73°
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 ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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.