S
M
T
W
T
F
S
26
70°
39°
27
71°
41°
28
72°
40°
29
75°
42°
30
76°
43°
31
74°
43°
1
71°
42°
2
77°
44°
3
76°
43°
4
76°
41°
5
76°
42°
6
75°
43°
7
76°
42°
8
76°
42°
9
75°
41°
10
74°
42°
11
75°
42°
12
75°
41°
13
73°
41°
14
77°
39°
15
69°
41°
16
75°
37°
17
71°
38°
18
70°
39°
19
68°
37°
20
67°
37°
21
69°
39°
22
74°
39°
23
75°
40°
24
75°
39°
25
72°
40°
26
74°
39°
27
70°
38°
28
72°
36°
29
73°
37°
30
69°
36°
31
70°
33°
1
71°
35°
2
72°
37°
3
74°
38°
4
74°
33°
5
71°
33°
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 67° to 77°, with overnight lows between 33° and 44°. The average high for August is 73° with an average low of 39°. 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.