S
M
T
W
T
F
S
27
93°
74°
28
92°
77°
29
90°
73°
30
92°
75°
31
92°
79°
1
93°
78°
2
95°
78°
3
94°
75°
4
93°
77°
5
92°
78°
6
92°
77°
7
94°
76°
8
90°
73°
9
92°
73°
10
93°
80°
11
92°
84°
12
92°
82°
13
95°
75°
14
91°
77°
15
93°
78°
16
92°
75°
17
93°
76°
18
92°
75°
19
93°
75°
20
95°
76°
21
92°
77°
22
92°
81°
23
93°
84°
24
94°
84°
25
91°
78°
26
94°
77°
27
95°
77°
28
93°
75°
29
93°
76°
30
93°
79°
31
95°
81°
1
94°
83°
2
94°
82°
3
95°
79°
4
94°
76°
5
95°
80°
6
94°
84°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in San Francisco
San Francisco's August 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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.
