S
M
T
W
T
F
S
26
81°
67°
27
84°
62°
28
85°
69°
29
85°
73°
30
84°
71°
31
88°
71°
1
87°
75°
2
87°
77°
3
83°
77°
4
85°
75°
5
88°
80°
6
88°
79°
7
87°
77°
8
86°
77°
9
86°
79°
10
89°
77°
11
88°
78°
12
87°
77°
13
86°
78°
14
85°
75°
15
86°
74°
16
84°
73°
17
86°
75°
18
86°
74°
19
85°
81°
20
89°
76°
21
85°
75°
22
84°
75°
23
86°
76°
24
86°
77°
25
87°
77°
26
88°
76°
27
86°
76°
28
84°
75°
29
84°
76°
30
86°
76°
31
86°
76°
1
85°
75°
2
86°
74°
3
82°
73°
4
82°
73°
5
83°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Frisco
Frisco's August 2026 forecast shows daily high temperatures ranging from 82° to 89°, with overnight lows between 71° and 81°. The average high for August is 86° with an average low of 76°. 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 Frisco. See also: September | October | November.