S
M
T
W
T
F
S
26
109°
88°
27
111°
88°
28
104°
88°
29
109°
86°
30
111°
88°
31
113°
88°
1
117°
89°
2
117°
89°
3
114°
88°
4
111°
87°
5
106°
84°
6
109°
83°
7
108°
85°
8
107°
83°
9
105°
82°
10
102°
80°
11
102°
82°
12
103°
81°
13
104°
82°
14
107°
76°
15
101°
73°
16
101°
73°
17
102°
74°
18
101°
75°
19
104°
78°
20
105°
79°
21
106°
79°
22
108°
78°
23
108°
79°
24
107°
78°
25
106°
78°
26
103°
77°
27
104°
78°
28
105°
77°
29
103°
76°
30
101°
77°
31
106°
77°
1
107°
76°
2
104°
76°
3
100°
75°
4
99°
72°
5
99°
74°
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 99° to 117°, with overnight lows between 72° and 89°. The average high for August is 105° with an average low of 79°. 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.
