S
M
T
W
T
F
S
26
99°
78°
27
100°
78°
28
100°
78°
29
100°
79°
30
101°
80°
31
103°
81°
1
98°
83°
2
96°
75°
3
100°
75°
4
101°
79°
5
101°
81°
6
101°
79°
7
102°
80°
8
101°
80°
9
100°
77°
10
99°
78°
11
101°
77°
12
102°
80°
13
102°
79°
14
102°
80°
15
102°
79°
16
102°
78°
17
103°
79°
18
103°
80°
19
102°
79°
20
103°
80°
21
103°
80°
22
102°
78°
23
100°
79°
24
99°
78°
25
93°
73°
26
96°
78°
27
97°
78°
28
96°
77°
29
95°
76°
30
95°
76°
31
94°
77°
1
95°
77°
2
95°
76°
3
94°
77°
4
95°
77°
5
95°
76°
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 93° to 103°, with overnight lows between 73° and 80°. The average high for August is 99° with an average low of 78°. 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.
