S
M
T
W
T
F
S
26
81°
68°
27
81°
68°
28
80°
67°
29
81°
64°
30
76°
65°
31
77°
67°
1
78°
65°
2
76°
61°
3
76°
63°
4
77°
65°
5
79°
66°
6
81°
67°
7
81°
67°
8
80°
65°
9
81°
64°
10
81°
64°
11
80°
65°
12
79°
66°
13
78°
66°
14
76°
65°
15
78°
65°
16
79°
66°
17
77°
64°
18
78°
62°
19
76°
61°
20
77°
64°
21
77°
66°
22
77°
67°
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 Rancho Santa Fe
Rancho Santa Fe's August 2026 forecast shows daily high temperatures ranging from 76° to 81°, with overnight lows between 61° and 68°. The average high for August is 79° with an average low of 65°. 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 Rancho Santa Fe. See also: September | October | November.
