Monthly outlook for Rancho Santa Fe, CA: average high 81.7°, average low 70.5°. That is 1.2° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 9 August (88.9°), the coolest 13 August (67.4°).
81.7°/70.5°
Average high / low
+1.2°
Above normal
0 / 0
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
80.2°
79.5°
+0.4°
19 August – 28 August
84.1°
80.1°
+2.3°
29 August – 7 September
at normal
81.1°
—
August records over 66 years
93.4°30 August 1967All-time high
56.3°23 August 1968All-time low
Climate normals and records are computed from the nearest reference point — Carlsbad (9 mi).
Mon, 1088° / 68°0
88 °
Rancho Santa Fe, Monday, 10 August
Clear. High 88°, low 68°.
Pressure29.91 inHg
Wind9.4 mph W
Humidity58%
Visibility6.2 mi
Dew point63°
Tue, 1181° / 71°0
81 °
Rancho Santa Fe, Tuesday, 11 August
Light rain. High 81°, low 71°.
Pressure29.97 inHg
Wind10.4 mph W
Humidity54%
Visibility6.2 mi
Dew point61°
Wed, 1278° / 69°0
78 °
Rancho Santa Fe, Wednesday, 12 August
Clear. High 78°, low 69°.
Pressure29.88 inHg
Wind11.1 mph W
Humidity55%
Visibility6.2 mi
Dew point61°
Thu, 1375° / 67°0
75 °
Rancho Santa Fe, Thursday, 13 August
Overcast. High 75°, low 67°.
Pressure29.91 inHg
Wind11.2 mph W
Humidity64%
Visibility—
Dew point61°
Fri, 1473° / 67°0
73 °
Rancho Santa Fe, Friday, 14 August
Overcast. High 73°, low 67°.
Pressure29.97 inHg
Wind8.3 mph W
Humidity68%
Visibility—
Dew point61°
Sat, 1579° / 68°0
79 °
Rancho Santa Fe, Saturday, 15 August
Overcast. High 79°, low 68°.
Pressure30.03 inHg
Wind7.9 mph W
Humidity63%
Visibility—
Dew point61°
Sun, 1679° / 70°0.01
79 °
Rancho Santa Fe, Sunday, 16 August
Light rain. High 79°, low 70°.
Pressure30.06 inHg
Wind10.7 mph W
Humidity60%
Visibility—
Dew point62°
Mon, 1779° / 69°0
79 °
Rancho Santa Fe, Monday, 17 August
Partly cloudy. High 79°, low 69°.
Pressure30.00 inHg
Wind11.1 mph W
Humidity59%
Visibility—
Dew point62°
Tue, 1882° / 70°0
82 °
Rancho Santa Fe, Tuesday, 18 August
Light rain. High 82°, low 70°.
Pressure29.94 inHg
Wind9.8 mph W
Humidity56%
Visibility—
Dew point63°
Wed, 1984° / 72°0
84 °
Rancho Santa Fe, Wednesday, 19 August
Clear. High 84°, low 72°.
Pressure29.88 inHg
Wind10.9 mph SW
Humidity53%
Visibility—
Dew point64°
Thu, 2085° / 74°0.03
85 °
Rancho Santa Fe, Thursday, 20 August
Light rain. High 85°, low 74°.
Pressure29.91 inHg
Wind7.9 mph W
Humidity60%
Visibility—
Dew point65°
Fri, 2184° / 74°0
84 °
Rancho Santa Fe, Friday, 21 August
Clear. High 84°, low 74°.
Pressure29.85 inHg
Wind9.3 mph W
Humidity52%
Visibility—
Dew point63°
Sat, 2283° / 73°0
83 °
Rancho Santa Fe, Saturday, 22 August
Overcast. High 83°, low 73°.
Pressure29.88 inHg
Wind8.7 mph W
Humidity54%
Visibility—
Dew point63°
Sun, 2383° / 72°0
83 °
Rancho Santa Fe, Sunday, 23 August
Clear. High 83°, low 72°.
Pressure29.91 inHg
Wind10.1 mph W
Humidity56%
Visibility—
Dew point64°
Mon, 2485° / 73°0
85 °
Rancho Santa Fe, Monday, 24 August
Clear. High 85°, low 73°.
Pressure29.88 inHg
Wind9.2 mph W
Humidity54%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 66°0
80 °
Rancho Santa Fe, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high93° (1985)
Record low60° (1989)
Wed, 2681° / 66°0
81 °
Rancho Santa Fe, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high92° (1981)
Record low57° (2024)
Thu, 2781° / 66°0
81 °
Rancho Santa Fe, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high93° (2009)
Record low57° (1973)
Fri, 2882° / 67°0
82 °
Rancho Santa Fe, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0 in
Chance of precipitation0%
Record high91° (2015)
Record low59° (2002)
Sat, 2982° / 67°0
82 °
Rancho Santa Fe, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0 in
Chance of precipitation0%
Record high93° (1998)
Record low57° (2010)
Sun, 3081° / 67°0
81 °
Rancho Santa Fe, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0 in
Chance of precipitation0%
Record high93° (1967)
Record low58° (1964)
Mon, 3180° / 66°0
80 °
Rancho Santa Fe, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high93° (2017)
Record low58° (1966)
Tue, 0181° / 66°0
81 °
Rancho Santa Fe, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high95° (1987)
Record low58° (1973)
Wed, 0281° / 67°0
81 °
Rancho Santa Fe, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0 in
Chance of precipitation2%
Record high91° (1982)
Record low59° (1964)
Thu, 0381° / 67°0
81 °
Rancho Santa Fe, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0 in
Chance of precipitation5%
Record high96° (1988)
Record low58° (1973)
Fri, 0482° / 67°0
82 °
Rancho Santa Fe, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0 in
Chance of precipitation2%
Record high102° (1988)
Record low57° (1999)
Sat, 0581° / 67°0
81 °
Rancho Santa Fe, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0 in
Chance of precipitation2%
Record high96° (1988)
Record low56° (1973)
Sun, 0682° / 67°0
82 °
Rancho Santa Fe, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0 in
Chance of precipitation3%
Record high98° (2020)
Record low57° (1970)
Mon, 0781° / 67°0
81 °
Rancho Santa Fe, Monday, 7 September
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0 in
Chance of precipitation2%
Record high93° (2024)
Record low58° (1965)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Rancho Santa Fe, CA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Rancho Santa Fe, CA since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.