Monthly outlook for Deer Lake Highlands, CA: average high 94.5°, average low 71.2°. That is 3.7° 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 24 August (106.3°), the coolest 14 August (61.2°).
94.5°/71.2°
Average high / low
+3.7°
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
90°
88.1°
+1.1°
19 August – 28 August
102°
88.4°
+7.6°
29 August – 7 September
at normal
89.6°
—
August records over 66 years
110.5°15 August 2020All-time high
53.4°22 August 1968All-time low
Climate normals and records are computed from the nearest reference point — Simi Valley (9 mi).
Mon, 1094° / 64°0
94 °
Deer Lake Highlands, Monday, 10 August
Overcast. High 94°, low 64°.
Pressure29.88 inHg
Wind5.6 mph S
Humidity25%
Visibility6.2 mi
Dew point50°
Tue, 1191° / 71°0
91 °
Deer Lake Highlands, Tuesday, 11 August
Overcast. High 91°, low 71°.
Pressure29.94 inHg
Wind5.5 mph S
Humidity25%
Visibility6.2 mi
Dew point48°
Wed, 1287° / 68°0
87 °
Deer Lake Highlands, Wednesday, 12 August
Partly cloudy. High 87°, low 68°.
Pressure29.88 inHg
Wind6.3 mph S
Humidity30%
Visibility6.2 mi
Dew point51°
Thu, 1383° / 63°0
83 °
Deer Lake Highlands, Thursday, 13 August
Clear. High 83°, low 63°.
Pressure29.88 inHg
Wind7.2 mph S
Humidity44%
Visibility—
Dew point50°
Fri, 1484° / 61°0
84 °
Deer Lake Highlands, Friday, 14 August
Overcast. High 84°, low 61°.
Pressure29.94 inHg
Wind6.3 mph S
Humidity40%
Visibility—
Dew point47°
Sat, 1589° / 66°0.04
89 °
Deer Lake Highlands, Saturday, 15 August
Light rain. High 89°, low 66°.
Pressure30.00 inHg
Wind7.3 mph S
Humidity29%
Visibility—
Dew point43°
Sun, 1686° / 67°0.04
86 °
Deer Lake Highlands, Sunday, 16 August
Light rain. High 86°, low 67°.
Pressure30.06 inHg
Wind7.4 mph S
Humidity45%
Visibility—
Dew point54°
Mon, 1792° / 70°0
92 °
Deer Lake Highlands, Monday, 17 August
Partly cloudy. High 92°, low 70°.
Pressure30.00 inHg
Wind7.3 mph W
Humidity28%
Visibility—
Dew point47°
Tue, 1899° / 74°0
99 °
Deer Lake Highlands, Tuesday, 18 August
Mostly clear. High 99°, low 74°.
Pressure29.94 inHg
Wind8 mph W
Humidity19%
Visibility—
Dew point42°
Wed, 19104° / 78°0.03
104 °
Deer Lake Highlands, Wednesday, 19 August
Light rain. High 104°, low 78°.
Pressure29.88 inHg
Wind7.5 mph SW
Humidity18%
Visibility—
Dew point44°
Thu, 2098° / 81°0
98 °
Deer Lake Highlands, Thursday, 20 August
Overcast. High 98°, low 81°.
Pressure29.91 inHg
Wind6.7 mph SW
Humidity30%
Visibility—
Dew point53°
Fri, 21102° / 78°0
102 °
Deer Lake Highlands, Friday, 21 August
Clear. High 102°, low 78°.
Pressure29.83 inHg
Wind8.7 mph SW
Humidity23%
Visibility—
Dew point49°
Sat, 22100° / 77°0
100 °
Deer Lake Highlands, Saturday, 22 August
Overcast. High 100°, low 77°.
Pressure29.88 inHg
Wind6.6 mph S
Humidity28%
Visibility—
Dew point51°
Sun, 23102° / 79°0
102 °
Deer Lake Highlands, Sunday, 23 August
Partly cloudy. High 102°, low 79°.
Pressure29.91 inHg
Wind6.3 mph SW
Humidity25%
Visibility—
Dew point51°
Mon, 24106° / 79°0
106 °
Deer Lake Highlands, Monday, 24 August
Clear. High 106°, low 79°.
Pressure29.88 inHg
Wind6.4 mph SW
Humidity21%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2589° / 66°0
89 °
Deer Lake Highlands, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high89°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high104° (1985)
Record low57° (1963)
Wed, 2689° / 67°0
89 °
Deer Lake Highlands, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high89°
Average low67°
Average precipitation0 in
Chance of precipitation0%
Record high102° (1981)
Record low58° (1990)
Thu, 2790° / 67°0
90 °
Deer Lake Highlands, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high90°
Average low67°
Average precipitation0 in
Chance of precipitation0%
Record high102° (1981)
Record low58° (1973)
Fri, 2891° / 67°0
91 °
Deer Lake Highlands, Friday, 28 August
Climate normal for this date — 60-year average.
Average high91°
Average low67°
Average precipitation0 in
Chance of precipitation0%
Record high101° (1981)
Record low58° (1973)
Sat, 2991° / 67°0
91 °
Deer Lake Highlands, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high91°
Average low67°
Average precipitation0 in
Chance of precipitation0%
Record high103° (1967)
Record low57° (2010)
Sun, 3090° / 67°0
90 °
Deer Lake Highlands, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high90°
Average low67°
Average precipitation0 in
Chance of precipitation2%
Record high107° (2017)
Record low57° (2010)
Mon, 3189° / 67°0
89 °
Deer Lake Highlands, Monday, 31 August
Climate normal for this date — 60-year average.
Average high89°
Average low67°
Average precipitation0 in
Chance of precipitation0%
Record high105° (2017)
Record low57° (2010)
Tue, 0189° / 67°0
89 °
Deer Lake Highlands, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high89°
Average low67°
Average precipitation0 in
Chance of precipitation2%
Record high110° (2022)
Record low57° (1964)
Wed, 0289° / 67°0.02
89 °
Deer Lake Highlands, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high89°
Average low67°
Average precipitation0.02 in
Chance of precipitation7%
Record high104° (1982)
Record low53° (1964)
Thu, 0389° / 67°0
89 °
Deer Lake Highlands, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high89°
Average low67°
Average precipitation0 in
Chance of precipitation3%
Record high108° (1988)
Record low56° (1964)
Fri, 0490° / 67°0.01
90 °
Deer Lake Highlands, Friday, 4 September
Climate normal for this date — 60-year average.
Average high90°
Average low67°
Average precipitation0.01 in
Chance of precipitation5%
Record high108° (2022)
Record low57° (1985)
Sat, 0590° / 67°0.02
90 °
Deer Lake Highlands, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high90°
Average low67°
Average precipitation0.02 in
Chance of precipitation2%
Record high111° (2020)
Record low57° (2000)
Sun, 0690° / 67°0.01
90 °
Deer Lake Highlands, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high90°
Average low67°
Average precipitation0.01 in
Chance of precipitation3%
Record high116° (2020)
Record low57° (2000)
Mon, 0789° / 67°0
89 °
Deer Lake Highlands, Monday, 7 September
Climate normal for this date — 60-year average.
Average high89°
Average low67°
Average precipitation0 in
Chance of precipitation0%
Record high107° (2024)
Record low56° (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 Deer Lake Highlands, 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 Deer Lake Highlands, 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.