Weather in Aliso Viejo, CA
Aliso Viejo, Sunday, 9 August, 15:42
Partly cloudy. Feels like 77°. High 90°, low 71°.
Monthly outlook for Aliso Viejo, CA: average high 78.7°, average low 68.4°. That is 0.4° below 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 10 August (91.3°), the coolest 15 August (64.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 78° | 79.4° | -0.8° |
| 19 August – 28 August | 79.8° | 79.9° | -0.1° |
| 29 August – 7 September | at normal | 81.2° | — |
August records over 66 years
0Aliso Viejo, Monday, 10 August
Partly cloudy. High 91°, low 67°.
0
Aliso Viejo, Tuesday, 11 August
Overcast. High 78°, low 68°.
0Aliso Viejo, Wednesday, 12 August
Overcast. High 77°, low 69°.
0Aliso Viejo, Thursday, 13 August
Overcast. High 72°, low 66°.
0Aliso Viejo, Friday, 14 August
Partly cloudy. High 72°, low 64°.
0Aliso Viejo, Saturday, 15 August
Overcast. High 73°, low 64°.
0
Aliso Viejo, Sunday, 16 August
Clear. High 74°, low 67°.
0Aliso Viejo, Monday, 17 August
Clear. High 75°, low 65°.
0Aliso Viejo, Tuesday, 18 August
Clear. High 76°, low 65°.
0Aliso Viejo, Wednesday, 19 August
Overcast. High 79°, low 69°.
0.02
Aliso Viejo, Thursday, 20 August
Light rain. High 82°, low 72°.
0.05Aliso Viejo, Friday, 21 August
Light rain. High 81°, low 74°.
0Aliso Viejo, Saturday, 22 August
Overcast. High 80°, low 72°.
0Aliso Viejo, Sunday, 23 August
Clear. High 78°, low 70°.
0
Aliso Viejo, Monday, 24 August
Mostly clear. High 79°, low 70°.
0Aliso Viejo, Tuesday, 25 August
Climate normal for this date — 60-year average.
0Aliso Viejo, Wednesday, 26 August
Climate normal for this date — 60-year average.
0Aliso Viejo, Thursday, 27 August
Climate normal for this date — 60-year average.
0Aliso Viejo, Friday, 28 August
Climate normal for this date — 60-year average.
0Aliso Viejo, Saturday, 29 August
Climate normal for this date — 60-year average.
0Aliso Viejo, Sunday, 30 August
Climate normal for this date — 60-year average.
0Aliso Viejo, Monday, 31 August
Climate normal for this date — 60-year average.
0.01Aliso Viejo, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.01Aliso Viejo, Wednesday, 2 September
Climate normal for this date — 60-year average.
0Aliso Viejo, Thursday, 3 September
Climate normal for this date — 60-year average.
0Aliso Viejo, Friday, 4 September
Climate normal for this date — 60-year average.
0.01Aliso Viejo, Saturday, 5 September
Climate normal for this date — 60-year average.
0.01Aliso Viejo, Sunday, 6 September
Climate normal for this date — 60-year average.
0Aliso Viejo, Monday, 7 September
Climate normal for this date — 60-year average.
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 Aliso Viejo, 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 Aliso Viejo, 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.
Sun and moon today
Weather history
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