Monthly outlook for South Lake, CA: average high 93.5°, average low 67.2°. That is 0.3° below the climate normal for August. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 9 August (102.3°), the coolest 18 August (63.3°).
93.5°/67.2°
Average high / low
−0.3°
Below normal
1 / 1
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
93.2°
94.9°
-1°
19 August – 28 August
94.1°
93.1°
+0.6°
29 August – 7 September
at normal
93°
—
August records over 66 years
108.5°17 August 2020All-time high
51.4°30 August 2010All-time low
Climate normals and records are computed from the nearest reference point — Mountain Mesa (2 mi).
Mon, 10101° / 74°0
101 °
South Lake, Monday, 10 August
Overcast. High 101°, low 74°.
Pressure29.88 inHg
Wind7.3 mph SW
Humidity14%
Visibility6.2 mi
Dew point39°
Tue, 11100° / 73°0
100 °
South Lake, Tuesday, 11 August
Overcast. High 100°, low 73°.
Pressure29.91 inHg
Wind6.1 mph SW
Humidity14%
Visibility6.2 mi
Dew point38°
Wed, 1296° / 71°0
96 °
South Lake, Wednesday, 12 August
Partly cloudy. High 96°, low 71°.
Pressure29.83 inHg
Wind8.5 mph SW
Humidity18%
Visibility6.2 mi
Dew point43°
Thu, 1394° / 68°0
94 °
South Lake, Thursday, 13 August
Clear. High 94°, low 68°.
Pressure29.83 inHg
Wind14.2 mph W
Humidity19%
Visibility—
Dew point40°
Fri, 1494° / 65°0
94 °
South Lake, Friday, 14 August
Overcast. High 94°, low 65°.
Pressure29.94 inHg
Wind11.1 mph W
Humidity17%
Visibility—
Dew point36°
Sat, 1573° / 66°0.06
73 °
South Lake, Saturday, 15 August
Light rain. High 73°, low 66°.
Pressure30.12 inHg
Wind6.1 mph NE
Humidity65%
Visibility—
Dew point55°
Sun, 1690° / 65°0
90 °
South Lake, Sunday, 16 August
Overcast. High 90°, low 65°.
Pressure30.06 inHg
Wind13.1 mph W
Humidity42%
Visibility—
Dew point55°
Mon, 1790° / 65°0
90 °
South Lake, Monday, 17 August
Mostly clear. High 90°, low 65°.
Pressure30.03 inHg
Wind13.1 mph W
Humidity25%
Visibility—
Dew point44°
Tue, 1890° / 63°0
90 °
South Lake, Tuesday, 18 August
Overcast. High 90°, low 63°.
Pressure29.97 inHg
Wind9.4 mph W
Humidity22%
Visibility—
Dew point40°
Wed, 1992° / 65°0
92 °
South Lake, Wednesday, 19 August
Overcast. High 92°, low 65°.
Pressure29.94 inHg
Wind8.7 mph SW
Humidity20%
Visibility—
Dew point38°
Thu, 2094° / 66°0
94 °
South Lake, Thursday, 20 August
Mostly clear. High 94°, low 66°.
Pressure29.94 inHg
Wind11.5 mph SW
Humidity19%
Visibility—
Dew point39°
Fri, 2192° / 65°0
92 °
South Lake, Friday, 21 August
Partly cloudy. High 92°, low 65°.
Pressure29.94 inHg
Wind9.3 mph W
Humidity21%
Visibility—
Dew point41°
Sat, 2294° / 66°0
94 °
South Lake, Saturday, 22 August
Clear. High 94°, low 66°.
Pressure29.94 inHg
Wind12.3 mph SW
Humidity16%
Visibility—
Dew point35°
Sun, 2395° / 66°0
95 °
South Lake, Sunday, 23 August
Clear. High 95°, low 66°.
Pressure29.91 inHg
Wind11.3 mph SW
Humidity18%
Visibility—
Dew point38°
Mon, 2496° / 67°0
96 °
South Lake, Monday, 24 August
Clear. High 96°, low 67°.
Pressure29.88 inHg
Wind11.6 mph W
Humidity17%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2593° / 70°0.02
93 °
South Lake, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high93°
Average low70°
Average precipitation0.02 in
Chance of precipitation8%
Record high105° (2010)
Record low54° (2024)
Wed, 2693° / 69°0.01
93 °
South Lake, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high93°
Average low69°
Average precipitation0.01 in
Chance of precipitation5%
Record high103° (2017)
Record low55° (1978)
Thu, 2794° / 69°0.02
94 °
South Lake, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high94°
Average low69°
Average precipitation0.02 in
Chance of precipitation12%
Record high104° (2019)
Record low52° (1973)
Fri, 2895° / 70°0
95 °
South Lake, Friday, 28 August
Climate normal for this date — 60-year average.
Average high95°
Average low70°
Average precipitation0 in
Chance of precipitation7%
Record high105° (2017)
Record low57° (1991)
Sat, 2994° / 71°0.02
94 °
South Lake, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high94°
Average low71°
Average precipitation0.02 in
Chance of precipitation3%
Record high103° (1998)
Record low53° (2010)
Sun, 3094° / 70°0
94 °
South Lake, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high94°
Average low70°
Average precipitation0 in
Chance of precipitation3%
Record high104° (2022)
Record low51° (2010)
Mon, 3193° / 69°0
93 °
South Lake, Monday, 31 August
Climate normal for this date — 60-year average.
Average high93°
Average low69°
Average precipitation0 in
Chance of precipitation7%
Record high103° (2022)
Record low54° (1966)
Tue, 0193° / 69°0.01
93 °
South Lake, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high93°
Average low69°
Average precipitation0.01 in
Chance of precipitation5%
Record high105° (2022)
Record low51° (1964)
Wed, 0294° / 70°0.03
94 °
South Lake, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high94°
Average low70°
Average precipitation0.03 in
Chance of precipitation12%
Record high107° (2022)
Record low52° (1964)
Thu, 0392° / 70°0.02
92 °
South Lake, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high92°
Average low70°
Average precipitation0.02 in
Chance of precipitation15%
Record high107° (2022)
Record low53° (2000)
Fri, 0492° / 69°0.02
92 °
South Lake, Friday, 4 September
Climate normal for this date — 60-year average.
Average high92°
Average low69°
Average precipitation0.02 in
Chance of precipitation17%
Record high107° (2020)
Record low53° (1992)
Sat, 0592° / 69°0.03
92 °
South Lake, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high92°
Average low69°
Average precipitation0.03 in
Chance of precipitation13%
Record high106° (2020)
Record low53° (2000)
Sun, 0693° / 69°0.03
93 °
South Lake, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high93°
Average low69°
Average precipitation0.03 in
Chance of precipitation12%
Record high108° (2022)
Record low51° (2000)
Mon, 0792° / 69°0.01
92 °
South Lake, Monday, 7 September
Climate normal for this date — 60-year average.
Average high92°
Average low69°
Average precipitation0.01 in
Chance of precipitation7%
Record high105° (2020)
Record low54° (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 South Lake, 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 South Lake, 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.