S
M
T
W
T
F
S
26
101°
81°
27
102°
82°
28
102°
82°
29
103°
83°
30
101°
84°
31
103°
82°
1
103°
76°
2
94°
77°
3
97°
78°
4
99°
79°
5
98°
80°
6
100°
79°
7
97°
77°
8
98°
79°
9
96°
76°
10
99°
79°
11
98°
79°
12
99°
78°
13
98°
79°
14
96°
79°
15
98°
78°
16
98°
79°
17
97°
79°
18
99°
78°
19
99°
79°
20
98°
79°
21
98°
78°
22
96°
77°
23
97°
78°
24
97°
78°
25
96°
77°
26
98°
78°
27
98°
77°
28
97°
77°
29
96°
76°
30
95°
76°
31
94°
75°
1
93°
76°
2
94°
76°
3
95°
75°
4
95°
76°
5
94°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Addison
Addison's August 2026 forecast shows daily high temperatures ranging from 93° to 103°, with overnight lows between 75° and 84°. The average high for August is 98° 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 Addison. See also: September | October | November.