S
M
T
W
T
F
S
26
88°
56°
27
87°
56°
28
89°
56°
29
88°
55°
30
87°
56°
31
89°
56°
1
88°
55°
2
89°
56°
3
89°
56°
4
88°
55°
5
88°
56°
6
89°
56°
7
88°
55°
8
88°
56°
9
87°
56°
10
88°
55°
11
88°
55°
12
87°
56°
13
88°
55°
14
88°
52°
15
85°
54°
16
86°
55°
17
88°
52°
18
88°
51°
19
87°
52°
20
86°
50°
21
84°
54°
22
83°
56°
23
86°
57°
24
86°
55°
25
87°
53°
26
85°
51°
27
82°
50°
28
83°
52°
29
84°
53°
30
84°
55°
31
85°
54°
1
84°
55°
2
88°
55°
3
89°
53°
4
84°
51°
5
83°
49°
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 89°, with overnight lows between 49° and 57°. The average high for August is 87° with an average low of 54°. 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.
