S
M
T
W
T
F
S
26
95°
59°
27
93°
58°
28
93°
58°
29
92°
59°
30
94°
59°
31
94°
58°
1
93°
58°
2
93°
57°
3
91°
58°
4
91°
58°
5
92°
57°
6
93°
58°
7
93°
58°
8
92°
56°
9
93°
57°
10
94°
59°
11
93°
58°
12
95°
59°
13
93°
58°
14
94°
58°
15
89°
58°
16
94°
59°
17
94°
60°
18
Hist. Avg.
75°
66°
19
Hist. Avg.
75°
66°
20
Hist. Avg.
75°
66°
21
Hist. Avg.
75°
66°
22
Hist. Avg.
75°
66°
23
Hist. Avg.
75°
66°
24
Hist. Avg.
75°
66°
25
Hist. Avg.
75°
66°
26
Hist. Avg.
75°
66°
27
Hist. Avg.
75°
66°
28
Hist. Avg.
75°
66°
29
Hist. Avg.
75°
66°
30
Hist. Avg.
75°
66°
31
Hist. Avg.
75°
65°
1
Hist. Avg.
75°
65°
2
Hist. Avg.
75°
65°
3
Hist. Avg.
75°
65°
4
Hist. Avg.
75°
65°
5
Hist. Avg.
75°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in San Francisco
San Francisco's August 2026 forecast shows daily high temperatures ranging from 89° to 95°, with overnight lows between 56° and 60°. The average high for August is 93° with an average low of 58°. 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 San Francisco. See also: September | October | November.
