Monthly outlook for Sierra Heights, CA: average high 100.2°, average low 68.2°. That is 2.8° 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 9 August (110°), the coolest 18 August (60.4°).
100.2°/68.2°
Average high / low
+2.8°
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
100.6°
96°
+2.5°
19 August – 28 August
99.6°
93.9°
+3.2°
29 August – 7 September
at normal
94°
—
August records over 66 years
115.3°16 August 2020All-time high
56.5°31 August 1964All-time low
Climate normals and records are computed from the nearest reference point — Linnell Camp (12 mi).
Mon, 10110° / 76°0
110 °
Sierra Heights, Monday, 10 August
Overcast. High 110°, low 76°.
Pressure29.80 inHg
Wind5.7 mph W
Humidity10%
Visibility6.2 mi
Dew point37°
Tue, 11108° / 77°0
108 °
Sierra Heights, Tuesday, 11 August
Overcast. High 108°, low 77°.
Pressure29.85 inHg
Wind5.4 mph W
Humidity11%
Visibility6.2 mi
Dew point37°
Wed, 12105° / 76°0.01
105 °
Sierra Heights, Wednesday, 12 August
Light rain. High 105°, low 76°.
Pressure29.77 inHg
Wind7.5 mph W
Humidity12%
Visibility6.2 mi
Dew point39°
Thu, 13100° / 70°0.04
100 °
Sierra Heights, Thursday, 13 August
Light rain. High 100°, low 70°.
Pressure29.74 inHg
Wind14.3 mph W
Humidity13%
Visibility—
Dew point37°
Fri, 14100° / 66°0
100 °
Sierra Heights, Friday, 14 August
Clear. High 100°, low 66°.
Pressure29.85 inHg
Wind9 mph SE
Humidity17%
Visibility—
Dew point41°
Sat, 1581° / 66°0
81 °
Sierra Heights, Saturday, 15 August
Overcast. High 81°, low 66°.
Pressure30.00 inHg
Wind10.9 mph SW
Humidity31%
Visibility—
Dew point44°
Sun, 1699° / 72°0
99 °
Sierra Heights, Sunday, 16 August
Mostly clear. High 99°, low 72°.
Pressure29.97 inHg
Wind14.2 mph W
Humidity23%
Visibility—
Dew point48°
Mon, 1798° / 64°0
98 °
Sierra Heights, Monday, 17 August
Clear. High 98°, low 64°.
Pressure29.94 inHg
Wind8.6 mph W
Humidity18%
Visibility—
Dew point41°
Tue, 1895° / 60°0
95 °
Sierra Heights, Tuesday, 18 August
Overcast. High 95°, low 60°.
Pressure29.91 inHg
Wind6.7 mph NW
Humidity20%
Visibility—
Dew point41°
Wed, 1997° / 63°0
97 °
Sierra Heights, Wednesday, 19 August
Clear. High 97°, low 63°.
Pressure29.85 inHg
Wind6.3 mph S
Humidity23%
Visibility—
Dew point47°
Thu, 2099° / 65°0
99 °
Sierra Heights, Thursday, 20 August
Clear. High 99°, low 65°.
Pressure29.94 inHg
Wind7.2 mph S
Humidity32%
Visibility—
Dew point50°
Fri, 2197° / 65°0
97 °
Sierra Heights, Friday, 21 August
Partly cloudy. High 97°, low 65°.
Pressure29.91 inHg
Wind8.9 mph SE
Humidity31%
Visibility—
Dew point49°
Sat, 22101° / 63°0
101 °
Sierra Heights, Saturday, 22 August
Clear. High 101°, low 63°.
Pressure29.91 inHg
Wind7.9 mph SE
Humidity25%
Visibility—
Dew point43°
Sun, 23101° / 66°0
101 °
Sierra Heights, Sunday, 23 August
Clear. High 101°, low 66°.
Pressure29.88 inHg
Wind7.6 mph SE
Humidity20%
Visibility—
Dew point39°
Mon, 24102° / 64°0
102 °
Sierra Heights, Monday, 24 August
Clear. High 102°, low 64°.
Pressure29.85 inHg
Wind6.4 mph W
Humidity21%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2594° / 68°0
94 °
Sierra Heights, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high94°
Average low68°
Average precipitation0 in
Chance of precipitation0%
Record high107° (2010)
Record low59° (1990)
Wed, 2694° / 68°0
94 °
Sierra Heights, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high94°
Average low68°
Average precipitation0 in
Chance of precipitation0%
Record high106° (2022)
Record low58° (1990)
Thu, 2795° / 68°0
95 °
Sierra Heights, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high95°
Average low68°
Average precipitation0 in
Chance of precipitation0%
Record high108° (2019)
Record low58° (1973)
Fri, 2895° / 68°0
95 °
Sierra Heights, Friday, 28 August
Climate normal for this date — 60-year average.
Average high95°
Average low68°
Average precipitation0 in
Chance of precipitation0%
Record high108° (2021)
Record low61° (1963)
Sat, 2995° / 69°0
95 °
Sierra Heights, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high95°
Average low69°
Average precipitation0 in
Chance of precipitation2%
Record high110° (2021)
Record low59° (2010)
Sun, 3094° / 68°0
94 °
Sierra Heights, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high94°
Average low68°
Average precipitation0 in
Chance of precipitation0%
Record high110° (2021)
Record low59° (1966)
Mon, 3194° / 68°0
94 °
Sierra Heights, Monday, 31 August
Climate normal for this date — 60-year average.
Average high94°
Average low68°
Average precipitation0 in
Chance of precipitation0%
Record high107° (2022)
Record low56° (1964)
Tue, 0194° / 68°0
94 °
Sierra Heights, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high94°
Average low68°
Average precipitation0 in
Chance of precipitation2%
Record high110° (2022)
Record low54° (1964)
Wed, 0295° / 68°0
95 °
Sierra Heights, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high95°
Average low68°
Average precipitation0 in
Chance of precipitation0%
Record high112° (2022)
Record low54° (1964)
Thu, 0394° / 69°0
94 °
Sierra Heights, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high94°
Average low69°
Average precipitation0 in
Chance of precipitation5%
Record high108° (2022)
Record low55° (1964)
Fri, 0493° / 68°0.01
93 °
Sierra Heights, Friday, 4 September
Climate normal for this date — 60-year average.
Average high93°
Average low68°
Average precipitation0.01 in
Chance of precipitation3%
Record high111° (2022)
Record low57° (2000)
Sat, 0593° / 67°0.02
93 °
Sierra Heights, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high93°
Average low67°
Average precipitation0.02 in
Chance of precipitation8%
Record high113° (2022)
Record low57° (2000)
Sun, 0694° / 67°0.01
94 °
Sierra Heights, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high94°
Average low67°
Average precipitation0.01 in
Chance of precipitation3%
Record high117° (2022)
Record low57° (1970)
Mon, 0794° / 67°0.01
94 °
Sierra Heights, Monday, 7 September
Climate normal for this date — 60-year average.
Average high94°
Average low67°
Average precipitation0.01 in
Chance of precipitation3%
Record high114° (2020)
Record low57° (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 Sierra Heights, 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 Sierra Heights, 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.