Monthly outlook for Hidden Valley Lake, CA: average high 97.7°, average low 61.6°. That is 7.1° 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 23 August (114.2°), the coolest 13 August (52.2°).
97.7°/61.6°
Average high / low
+7.1°
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
92.1°
86°
+3.4°
19 August – 28 August
107°
83.4°
+13.1°
29 August – 7 September
at normal
84°
—
August records over 66 years
105.4°10 August 1971All-time high
43.9°15 August 1976All-time low
Climate normals and records are computed from the nearest reference point — Cobb (10 mi).
Mon, 1091° / 54°0
91 °
Hidden Valley Lake, Monday, 10 August
Clear. High 91°, low 54°.
Pressure29.83 inHg
Wind5.7 mph S
Humidity14%
Visibility6.2 mi
Dew point38°
Tue, 1199° / 52°0
99 °
Hidden Valley Lake, Tuesday, 11 August
Clear. High 99°, low 52°.
Pressure29.88 inHg
Wind5.3 mph S
Humidity16%
Visibility6.2 mi
Dew point41°
Wed, 1295° / 59°0
95 °
Hidden Valley Lake, Wednesday, 12 August
Overcast. High 95°, low 59°.
Pressure29.80 inHg
Wind6.6 mph SE
Humidity16%
Visibility6.2 mi
Dew point39°
Thu, 1384° / 52°0
84 °
Hidden Valley Lake, Thursday, 13 August
Overcast. High 84°, low 52°.
Pressure29.83 inHg
Wind6.3 mph S
Humidity36%
Visibility6.2 mi
Dew point49°
Fri, 1487° / 53°0
87 °
Hidden Valley Lake, Friday, 14 August
Clear. High 87°, low 53°.
Pressure29.85 inHg
Wind8.7 mph SW
Humidity27%
Visibility—
Dew point45°
Sat, 1587° / 54°0
87 °
Hidden Valley Lake, Saturday, 15 August
Partly cloudy. High 87°, low 54°.
Pressure29.97 inHg
Wind10.6 mph SW
Humidity25%
Visibility—
Dew point44°
Sun, 1688° / 54°0
88 °
Hidden Valley Lake, Sunday, 16 August
Overcast. High 88°, low 54°.
Pressure30.00 inHg
Wind9.6 mph SW
Humidity19%
Visibility—
Dew point37°
Mon, 1791° / 58°0
91 °
Hidden Valley Lake, Monday, 17 August
Clear. High 91°, low 58°.
Pressure29.94 inHg
Wind8.5 mph SW
Humidity14%
Visibility—
Dew point33°
Tue, 1895° / 59°0
95 °
Hidden Valley Lake, Tuesday, 18 August
Clear. High 95°, low 59°.
Pressure29.91 inHg
Wind9.5 mph SW
Humidity11%
Visibility—
Dew point30°
Wed, 1999° / 62°0
99 °
Hidden Valley Lake, Wednesday, 19 August
Clear. High 99°, low 62°.
Pressure29.88 inHg
Wind9 mph SW
Humidity10%
Visibility—
Dew point30°
Thu, 20104° / 67°0
104 °
Hidden Valley Lake, Thursday, 20 August
Clear. High 104°, low 67°.
Pressure29.88 inHg
Wind8.3 mph SW
Humidity11%
Visibility—
Dew point36°
Fri, 21109° / 77°0
109 °
Hidden Valley Lake, Friday, 21 August
Clear. High 109°, low 77°.
Pressure29.88 inHg
Wind9.8 mph SW
Humidity12%
Visibility—
Dew point42°
Sat, 22113° / 82°0
113 °
Hidden Valley Lake, Saturday, 22 August
Clear. High 113°, low 82°.
Pressure29.83 inHg
Wind11.1 mph SW
Humidity11%
Visibility—
Dew point43°
Sun, 23114° / 75°0
114 °
Hidden Valley Lake, Sunday, 23 August
Clear. High 114°, low 75°.
Pressure29.77 inHg
Wind9.3 mph SW
Humidity9%
Visibility—
Dew point39°
Mon, 24104° / 69°0
104 °
Hidden Valley Lake, Monday, 24 August
Partly cloudy. High 104°, low 69°.
Pressure29.83 inHg
Wind7.2 mph SW
Humidity16%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2583° / 56°0
83 °
Hidden Valley Lake, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low56°
Average precipitation0 in
Chance of precipitation3%
Record high98° (2010)
Record low49° (1966)
Wed, 2683° / 56°0
83 °
Hidden Valley Lake, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low56°
Average precipitation0 in
Chance of precipitation2%
Record high97° (1988)
Record low48° (1966)
Thu, 2785° / 57°0
85 °
Hidden Valley Lake, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high85°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high98° (2017)
Record low49° (1960)
Fri, 2885° / 58°0
85 °
Hidden Valley Lake, Friday, 28 August
Climate normal for this date — 60-year average.
Average high85°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high100° (2017)
Record low49° (2010)
Sat, 2984° / 57°0
84 °
Hidden Valley Lake, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high96° (1988)
Record low49° (1975)
Sun, 3083° / 57°0
83 °
Hidden Valley Lake, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low57°
Average precipitation0 in
Chance of precipitation3%
Record high95° (2021)
Record low47° (2010)
Mon, 3184° / 57°0.02
84 °
Hidden Valley Lake, Monday, 31 August
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0.02 in
Chance of precipitation3%
Record high97° (1998)
Record low47° (1966)
Tue, 0184° / 57°0
84 °
Hidden Valley Lake, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0 in
Chance of precipitation2%
Record high102° (2017)
Record low45° (1964)
Wed, 0284° / 57°0
84 °
Hidden Valley Lake, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high103° (2017)
Record low45° (1964)
Thu, 0384° / 57°0
84 °
Hidden Valley Lake, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high102° (1988)
Record low44° (2000)
Fri, 0484° / 57°0
84 °
Hidden Valley Lake, Friday, 4 September
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high102° (1988)
Record low44° (1960)
Sat, 0584° / 57°0
84 °
Hidden Valley Lake, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0 in
Chance of precipitation2%
Record high103° (2022)
Record low45° (2000)
Sun, 0684° / 57°0
84 °
Hidden Valley Lake, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high106° (2022)
Record low45° (2002)
Mon, 0783° / 57°0.01
83 °
Hidden Valley Lake, Monday, 7 September
Climate normal for this date — 60-year average.
Average high83°
Average low57°
Average precipitation0.01 in
Chance of precipitation3%
Record high104° (2020)
Record low44° (1978)
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 Hidden Valley 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 Hidden Valley 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.