S
M
T
W
T
F
S
26
96°
77°
27
97°
77°
28
98°
76°
29
98°
77°
30
99°
78°
31
98°
77°
1
98°
78°
2
99°
78°
3
99°
77°
4
100°
78°
5
100°
78°
6
99°
77°
7
99°
78°
8
98°
78°
9
99°
79°
10
99°
76°
11
98°
75°
12
96°
75°
13
95°
74°
14
98°
75°
15
97°
76°
16
97°
76°
17
96°
75°
18
97°
70°
19
98°
70°
20
91°
69°
21
91°
69°
22
92°
70°
23
91°
70°
24
92°
71°
25
92°
70°
26
93°
70°
27
93°
71°
28
95°
70°
29
91°
71°
30
95°
71°
31
95°
73°
1
96°
73°
2
95°
71°
3
93°
71°
4
89°
70°
5
91°
72°
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 89° to 100°, with overnight lows between 69° and 79°. The average high for August is 96° with an average low of 74°. 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.
