S
M
T
W
T
F
S
26
85°
53°
27
86°
52°
28
96°
58°
29
78°
53°
30
79°
52°
31
77°
52°
1
78°
53°
2
80°
55°
3
80°
56°
4
81°
56°
5
82°
55°
6
83°
56°
7
83°
56°
8
82°
55°
9
81°
56°
10
79°
56°
11
77°
55°
12
78°
55°
13
79°
56°
14
80°
56°
15
78°
55°
16
78°
54°
17
79°
55°
18
79°
55°
19
83°
56°
20
84°
56°
21
83°
55°
22
83°
56°
23
82°
55°
24
79°
55°
25
77°
54°
26
78°
55°
27
84°
54°
28
84°
53°
29
85°
55°
30
85°
55°
31
83°
52°
1
80°
49°
2
81°
47°
3
83°
50°
4
81°
52°
5
80°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sonoma Raceway
Sonoma Raceway's August 2026 forecast shows daily high temperatures ranging from 77° to 96°, with overnight lows between 47° and 58°. The average high for August is 81° 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 Raceway. See also: September | October | November.