S
M
T
W
T
F
S
26
80°
52°
27
84°
51°
28
85°
51°
29
85°
53°
30
86°
54°
31
86°
54°
1
87°
53°
2
86°
54°
3
86°
55°
4
87°
54°
5
84°
53°
6
85°
54°
7
85°
54°
8
80°
52°
9
84°
51°
10
83°
50°
11
81°
50°
12
86°
52°
13
86°
53°
14
Hist. Avg.
89°
54°
15
Hist. Avg.
89°
54°
16
Hist. Avg.
89°
54°
17
Hist. Avg.
89°
54°
18
Hist. Avg.
89°
54°
19
Hist. Avg.
89°
54°
20
Hist. Avg.
88°
54°
21
Hist. Avg.
88°
54°
22
Hist. Avg.
88°
54°
23
Hist. Avg.
88°
54°
24
Hist. Avg.
88°
54°
25
Hist. Avg.
88°
54°
26
Hist. Avg.
88°
54°
27
Hist. Avg.
88°
54°
28
Hist. Avg.
88°
54°
29
Hist. Avg.
88°
54°
30
Hist. Avg.
88°
54°
31
Hist. Avg.
87°
54°
1
Hist. Avg.
87°
54°
2
Hist. Avg.
87°
54°
3
Hist. Avg.
87°
54°
4
Hist. Avg.
87°
53°
5
Hist. Avg.
87°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Sebastopol
Sebastopol's August 2026 forecast shows daily high temperatures ranging from 80° to 87°, with overnight lows between 50° and 55°. The average high for August is 85° with an average low of 53°. 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 Sebastopol. See also: September | October | November.