S
M
T
W
T
F
S
26
88°
64°
27
87°
63°
28
88°
64°
29
88°
63°
30
87°
62°
31
87°
60°
1
85°
57°
2
82°
57°
3
81°
58°
4
82°
60°
5
83°
63°
6
86°
64°
7
88°
64°
8
88°
63°
9
89°
65°
10
89°
65°
11
88°
64°
12
87°
62°
13
88°
63°
14
87°
62°
15
86°
64°
16
87°
64°
17
89°
63°
18
88°
64°
19
89°
64°
20
89°
60°
21
86°
59°
22
84°
59°
23
84°
63°
24
85°
64°
25
88°
63°
26
83°
58°
27
83°
57°
28
84°
58°
29
83°
57°
30
82°
59°
31
84°
60°
1
85°
59°
2
86°
59°
3
85°
60°
4
84°
59°
5
88°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Bonsall
Bonsall's August 2026 forecast shows daily high temperatures ranging from 81° to 89°, with overnight lows between 57° and 65°. The average high for August is 86° with an average low of 61°. 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 Bonsall. See also: September | October | November.
