S
M
T
W
T
F
S
26
94°
54°
27
84°
50°
28
90°
49°
29
89°
55°
30
88°
54°
31
91°
53°
1
98°
53°
2
100°
50°
3
97°
51°
4
90°
54°
5
90°
54°
6
90°
55°
7
92°
54°
8
91°
55°
9
90°
55°
10
86°
55°
11
84°
52°
12
85°
54°
13
86°
54°
14
84°
55°
15
82°
53°
16
82°
54°
17
86°
55°
18
87°
54°
19
88°
56°
20
89°
57°
21
89°
58°
22
88°
57°
23
88°
56°
24
87°
56°
25
88°
55°
26
87°
55°
27
88°
56°
28
86°
55°
29
82°
54°
30
87°
55°
31
88°
56°
1
86°
55°
2
85°
55°
3
82°
54°
4
83°
55°
5
86°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sonoma
Sonoma's August 2026 forecast shows daily high temperatures ranging from 82° to 100°, with overnight lows between 50° and 58°. The average high for August is 88° with an average low of 55°. 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 Sonoma. See also: September | October | November.
