Monthly outlook for Lemon Heights, CA: average high 88.7°, average low 72.1°. That is 3.7° 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 8 August (97.1°), the coolest 9 August (69.5°).
88.7°/72.1°
Average high / low
+3.7°
Above normal
0 / 0
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
89°
82.2°
+3.8°
18 August – 27 August
88.2°
82.2°
+3.3°
28 August – 6 September
at normal
83.9°
—
August records over 66 years
102°18 August 2020All-time high
55°11 August 2020All-time low
Climate normals and records are computed from the nearest reference point — Tustin (3 mi).
Sun, 0995° / 69°0
95 °
Lemon Heights, Sunday, 9 August
Clear. High 95°, low 69°.
Pressure29.85 inHg
Wind7.6 mph W
Humidity38%
Visibility6.2 mi
Dew point59°
Mon, 1089° / 71°0
89 °
Lemon Heights, Monday, 10 August
Overcast. High 89°, low 71°.
Pressure29.91 inHg
Wind8.4 mph SW
Humidity39%
Visibility6.2 mi
Dew point59°
Tue, 1187° / 73°0
87 °
Lemon Heights, Tuesday, 11 August
Overcast. High 87°, low 73°.
Pressure29.97 inHg
Wind9 mph SW
Humidity40%
Visibility6.2 mi
Dew point58°
Wed, 1287° / 73°0
87 °
Lemon Heights, Wednesday, 12 August
Overcast. High 87°, low 73°.
Pressure29.88 inHg
Wind8.3 mph SW
Humidity39%
Visibility6.2 mi
Dew point56°
Thu, 1383° / 71°0
83 °
Lemon Heights, Thursday, 13 August
Overcast. High 83°, low 71°.
Pressure29.91 inHg
Wind10.7 mph SW
Humidity50%
Visibility—
Dew point59°
Fri, 1484° / 70°0
84 °
Lemon Heights, Friday, 14 August
Overcast. High 84°, low 70°.
Pressure29.97 inHg
Wind9.2 mph SW
Humidity49%
Visibility—
Dew point58°
Sat, 1588° / 70°0
88 °
Lemon Heights, Saturday, 15 August
Partly cloudy. High 88°, low 70°.
Pressure30.00 inHg
Wind9.8 mph W
Humidity42%
Visibility—
Dew point57°
Sun, 1689° / 72°0
89 °
Lemon Heights, Sunday, 16 August
Partly cloudy. High 89°, low 72°.
Pressure30.00 inHg
Wind9 mph SW
Humidity39%
Visibility—
Dew point55°
Mon, 1790° / 71°0
90 °
Lemon Heights, Monday, 17 August
Clear. High 90°, low 71°.
Pressure30.03 inHg
Wind9.3 mph W
Humidity36%
Visibility—
Dew point54°
Tue, 1893° / 74°0
93 °
Lemon Heights, Tuesday, 18 August
Clear. High 93°, low 74°.
Pressure29.94 inHg
Wind9.6 mph W
Humidity37%
Visibility—
Dew point56°
Wed, 1990° / 75°0
90 °
Lemon Heights, Wednesday, 19 August
Clear. High 90°, low 75°.
Pressure29.88 inHg
Wind9 mph SW
Humidity40%
Visibility—
Dew point59°
Thu, 2090° / 74°0
90 °
Lemon Heights, Thursday, 20 August
Partly cloudy. High 90°, low 74°.
Pressure29.88 inHg
Wind9.6 mph SW
Humidity46%
Visibility—
Dew point61°
Fri, 2188° / 74°0
88 °
Lemon Heights, Friday, 21 August
Partly cloudy. High 88°, low 74°.
Pressure29.88 inHg
Wind9.2 mph SW
Humidity52%
Visibility—
Dew point63°
Sat, 2283° / 73°0
83 °
Lemon Heights, Saturday, 22 August
Overcast. High 83°, low 73°.
Pressure29.88 inHg
Wind8.7 mph SW
Humidity57%
Visibility—
Dew point64°
Sun, 2385° / 72°0
85 °
Lemon Heights, Sunday, 23 August
Clear. High 85°, low 72°.
Pressure29.88 inHg
Wind9.4 mph SW
Humidity57%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2482° / 65°0
82 °
Lemon Heights, Monday, 24 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high92° (1985)
Record low59° (2021)
Tue, 2583° / 65°0
83 °
Lemon Heights, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high96° (1985)
Record low58° (2023)
Wed, 2683° / 66°0
83 °
Lemon Heights, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high96° (1981)
Record low59° (1990)
Thu, 2784° / 66°0
84 °
Lemon Heights, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high96° (1981)
Record low58° (1973)
Fri, 2884° / 66°0
84 °
Lemon Heights, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high95° (1981)
Record low60° (1991)
Sat, 2985° / 66°0
85 °
Lemon Heights, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high95° (1998)
Record low58° (2024)
Sun, 3084° / 66°0
84 °
Lemon Heights, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high96° (1967)
Record low57° (2024)
Mon, 3183° / 65°0
83 °
Lemon Heights, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high101° (2017)
Record low59° (2020)
Tue, 0183° / 66°0.02
83 °
Lemon Heights, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.02 in
Chance of precipitation3%
Record high98° (1998)
Record low58° (1973)
Wed, 0284° / 66°0.01
84 °
Lemon Heights, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.01 in
Chance of precipitation5%
Record high96° (1982)
Record low59° (2020)
Thu, 0384° / 66°0.01
84 °
Lemon Heights, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.01 in
Chance of precipitation7%
Record high100° (1988)
Record low59° (2021)
Fri, 0485° / 66°0
85 °
Lemon Heights, Friday, 4 September
Climate normal for this date — 60-year average.
Average high85°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high111° (2022)
Record low58° (2021)
Sat, 0584° / 66°0.01
84 °
Lemon Heights, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.01 in
Chance of precipitation5%
Record high105° (2024)
Record low57° (1973)
Sun, 0684° / 66°0.01
84 °
Lemon Heights, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.01 in
Chance of precipitation3%
Record high109° (2024)
Record low59° (1970)
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 Lemon 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 Lemon 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.