Monthly outlook for San Juan Hot Springs, CA: average high 89.4°, average low 63.7°. That is 5.3° above the climate normal for August. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 20 August (97.1°), the coolest 14 August (56.1°).
89.4°/63.7°
Average high / low
+5.3°
Above normal
1 / 0
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
86.7°
79.9°
+3.8°
19 August – 28 August
93.9°
80.4°
+7.5°
29 August – 7 September
at normal
81.8°
—
August records over 66 years
105.6°18 August 2020All-time high
55.8°1 August 2013All-time low
Climate normals and records are computed from the nearest reference point — Mission Viejo (8 mi).
Mon, 1092° / 68°0
92 °
San Juan Hot Springs, Monday, 10 August
Mostly clear. High 92°, low 68°.
Pressure29.91 inHg
Wind8.9 mph SW
Humidity35%
Visibility6.2 mi
Dew point59°
Tue, 1190° / 65°0
90 °
San Juan Hot Springs, Tuesday, 11 August
Overcast. High 90°, low 65°.
Pressure29.97 inHg
Wind8.9 mph SW
Humidity30%
Visibility6.2 mi
Dew point54°
Wed, 1288° / 62°0
88 °
San Juan Hot Springs, Wednesday, 12 August
Overcast. High 88°, low 62°.
Pressure29.88 inHg
Wind9.4 mph SW
Humidity34%
Visibility6.2 mi
Dew point55°
Thu, 1380° / 58°0
80 °
San Juan Hot Springs, Thursday, 13 August
Partly cloudy. High 80°, low 58°.
Pressure29.91 inHg
Wind9.1 mph SW
Humidity47%
Visibility6.2 mi
Dew point57°
Fri, 1482° / 56°0
82 °
San Juan Hot Springs, Friday, 14 August
Clear. High 82°, low 56°.
Pressure29.97 inHg
Wind10.8 mph SW
Humidity47%
Visibility—
Dew point54°
Sat, 1583° / 56°0
83 °
San Juan Hot Springs, Saturday, 15 August
Overcast. High 83°, low 56°.
Pressure30.03 inHg
Wind10 mph SW
Humidity37%
Visibility—
Dew point49°
Sun, 1684° / 58°0
84 °
San Juan Hot Springs, Sunday, 16 August
Clear. High 84°, low 58°.
Pressure30.06 inHg
Wind11.3 mph W
Humidity48%
Visibility—
Dew point57°
Mon, 1787° / 56°0
87 °
San Juan Hot Springs, Monday, 17 August
Clear. High 87°, low 56°.
Pressure30.00 inHg
Wind11.3 mph W
Humidity31%
Visibility—
Dew point47°
Tue, 1889° / 57°0
89 °
San Juan Hot Springs, Tuesday, 18 August
Clear. High 89°, low 57°.
Pressure29.94 inHg
Wind9.9 mph W
Humidity27%
Visibility—
Dew point45°
Wed, 1994° / 63°0
94 °
San Juan Hot Springs, Wednesday, 19 August
Overcast. High 94°, low 63°.
Pressure29.91 inHg
Wind9.6 mph W
Humidity25%
Visibility—
Dew point48°
Thu, 2097° / 69°0.03
97 °
San Juan Hot Springs, Thursday, 20 August
Light rain. High 97°, low 69°.
Pressure29.91 inHg
Wind9.5 mph SW
Humidity28%
Visibility—
Dew point53°
Fri, 2194° / 73°0.06
94 °
San Juan Hot Springs, Friday, 21 August
Light rain. High 94°, low 73°.
Pressure29.97 inHg
Wind8.9 mph W
Humidity32%
Visibility—
Dew point57°
Sat, 2293° / 72°0.01
93 °
San Juan Hot Springs, Saturday, 22 August
Light rain. High 93°, low 72°.
Pressure29.91 inHg
Wind8.6 mph SW
Humidity27%
Visibility—
Dew point51°
Sun, 2392° / 68°0
92 °
San Juan Hot Springs, Sunday, 23 August
Clear. High 92°, low 68°.
Pressure29.91 inHg
Wind7.7 mph SW
Humidity31%
Visibility—
Dew point53°
Mon, 2492° / 68°0
92 °
San Juan Hot Springs, Monday, 24 August
Partly cloudy. High 92°, low 68°.
Pressure29.94 inHg
Wind8.7 mph SW
Humidity31%
Visibility—
Dew point54°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2581° / 65°0
81 °
San Juan Hot Springs, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high93° (1985)
Record low58° (1978)
Wed, 2681° / 65°0
81 °
San Juan Hot Springs, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0 in
Chance of precipitation3%
Record high93° (2021)
Record low57° (1990)
Thu, 2782° / 65°0
82 °
San Juan Hot Springs, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high95° (2020)
Record low58° (1973)
Fri, 2882° / 65°0
82 °
San Juan Hot Springs, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high92° (2023)
Record low60° (1973)
Sat, 2983° / 66°0
83 °
San Juan Hot Springs, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high93° (2023)
Record low58° (2010)
Sun, 3082° / 66°0
82 °
San Juan Hot Springs, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high92° (1967)
Record low58° (1964)
Mon, 3181° / 65°0
81 °
San Juan Hot Springs, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high104° (2017)
Record low58° (1961)
Tue, 0181° / 65°0
81 °
San Juan Hot Springs, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high97° (2022)
Record low58° (1973)
Wed, 0282° / 65°0.01
82 °
San Juan Hot Springs, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.01 in
Chance of precipitation3%
Record high95° (2017)
Record low59° (1966)
Thu, 0382° / 65°0
82 °
San Juan Hot Springs, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0 in
Chance of precipitation5%
Record high98° (1988)
Record low57° (1973)
Fri, 0483° / 66°0
83 °
San Juan Hot Springs, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0 in
Chance of precipitation3%
Record high109° (2022)
Record low58° (1999)
Sat, 0582° / 66°0.01
82 °
San Juan Hot Springs, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.01 in
Chance of precipitation3%
Record high105° (2020)
Record low57° (1973)
Sun, 0682° / 66°0.01
82 °
San Juan Hot Springs, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.01 in
Chance of precipitation2%
Record high107° (2020)
Record low58° (1970)
Mon, 0782° / 66°0
82 °
San Juan Hot Springs, Monday, 7 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high101° (2024)
Record low57° (1980)
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 San Juan Hot Springs, 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 San Juan Hot Springs, 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.