S
M
T
W
T
F
S
26
98°
78°
27
99°
74°
28
93°
79°
29
97°
79°
30
98°
78°
31
98°
80°
1
99°
74°
2
100°
77°
3
96°
74°
4
93°
72°
5
91°
73°
6
93°
76°
7
93°
77°
8
94°
73°
9
95°
74°
10
96°
77°
11
94°
76°
12
97°
74°
13
93°
71°
14
92°
70°
15
91°
70°
16
91°
71°
17
92°
71°
18
91°
72°
19
92°
71°
20
93°
71°
21
95°
72°
22
95°
72°
23
96°
75°
24
96°
76°
25
95°
75°
26
95°
78°
27
96°
76°
28
95°
75°
29
94°
76°
30
94°
75°
31
95°
69°
1
89°
68°
2
88°
69°
3
Hist. Avg.
92°
71°
4
Hist. Avg.
92°
70°
5
Hist. Avg.
92°
70°
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 88° to 100°, with overnight lows between 68° and 80°. The average high for August is 94° with an average low of 74°. 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.
