S
M
T
W
T
F
S
26
77°
52°
27
77°
53°
28
78°
54°
29
78°
53°
30
79°
53°
31
78°
54°
1
81°
53°
2
83°
54°
3
79°
53°
4
78°
52°
5
78°
52°
6
79°
53°
7
78°
53°
8
78°
54°
9
79°
55°
10
84°
53°
11
80°
52°
12
84°
51°
13
83°
52°
14
85°
54°
15
84°
56°
16
85°
56°
17
85°
57°
18
86°
57°
19
86°
56°
20
85°
57°
21
86°
57°
22
86°
56°
23
85°
56°
24
86°
55°
25
85°
56°
26
86°
57°
27
86°
56°
28
85°
56°
29
85°
54°
30
84°
54°
31
83°
51°
1
82°
52°
2
81°
51°
3
80°
49°
4
79°
50°
5
79°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Greenbrae
Greenbrae's August 2026 forecast shows daily high temperatures ranging from 77° to 86°, with overnight lows between 49° 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 Greenbrae. See also: September | October | November.
