S
M
T
W
T
F
S
26
93°
53°
27
76°
48°
28
78°
55°
29
78°
53°
30
79°
52°
31
78°
51°
1
78°
53°
2
83°
53°
3
78°
54°
4
77°
52°
5
77°
52°
6
78°
53°
7
79°
54°
8
81°
53°
9
79°
54°
10
81°
55°
11
82°
56°
12
81°
56°
13
79°
55°
14
78°
56°
15
81°
56°
16
83°
55°
17
83°
56°
18
82°
56°
19
83°
55°
20
83°
56°
21
82°
56°
22
82°
55°
23
79°
54°
24
83°
53°
25
83°
54°
26
83°
55°
27
84°
54°
28
86°
56°
29
85°
55°
30
86°
55°
31
86°
54°
1
85°
55°
2
85°
57°
3
86°
56°
4
86°
54°
5
84°
51°
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 76° to 93°, with overnight lows between 48° and 57°. The average high for August is 82° 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.