Weather in Upper Aliso, CA
Upper Aliso, Saturday, 8 August, 16:49
Clear. Feels like 87°. High 92°, low 67°.
Monthly outlook for Upper Aliso, CA: average high 88.7°, average low 67°. That is 5° 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 18 August (92.9°), the coolest 13 August (63.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 88.5° | 80° | +4.7° |
| 18 August – 27 August | 89.2° | 80.1° | +5.1° |
| 28 August – 6 September | at normal | 81.9° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Mission Viejo (6 mi).
0Upper Aliso, Sunday, 9 August
Clear. High 91°, low 68°.
0
Upper Aliso, Monday, 10 August
Overcast. High 90°, low 69°.
0Upper Aliso, Tuesday, 11 August
Overcast. High 87°, low 67°.
0.01
Upper Aliso, Wednesday, 12 August
Light rain. High 87°, low 67°.
0Upper Aliso, Thursday, 13 August
Overcast. High 84°, low 64°.
0Upper Aliso, Friday, 14 August
Overcast. High 84°, low 64°.
0
Upper Aliso, Saturday, 15 August
Partly cloudy. High 89°, low 64°.
0Upper Aliso, Sunday, 16 August
Partly cloudy. High 90°, low 66°.
0Upper Aliso, Monday, 17 August
Clear. High 91°, low 66°.
0Upper Aliso, Tuesday, 18 August
Clear. High 93°, low 69°.
0Upper Aliso, Wednesday, 19 August
Clear. High 91°, low 70°.
0
Upper Aliso, Thursday, 20 August
Mostly clear. High 91°, low 69°.
0Upper Aliso, Friday, 21 August
Overcast. High 89°, low 68°.
0Upper Aliso, Saturday, 22 August
Overcast. High 85°, low 68°.
0Upper Aliso, Sunday, 23 August
Mostly clear. High 87°, low 67°.
0Upper Aliso, Monday, 24 August
Climate normal for this date — 60-year average.
0Upper Aliso, Tuesday, 25 August
Climate normal for this date — 60-year average.
0Upper Aliso, Wednesday, 26 August
Climate normal for this date — 60-year average.
0Upper Aliso, Thursday, 27 August
Climate normal for this date — 60-year average.
0Upper Aliso, Friday, 28 August
Climate normal for this date — 60-year average.
0Upper Aliso, Saturday, 29 August
Climate normal for this date — 60-year average.
0Upper Aliso, Sunday, 30 August
Climate normal for this date — 60-year average.
0Upper Aliso, Monday, 31 August
Climate normal for this date — 60-year average.
0Upper Aliso, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.01Upper Aliso, Wednesday, 2 September
Climate normal for this date — 60-year average.
0Upper Aliso, Thursday, 3 September
Climate normal for this date — 60-year average.
0Upper Aliso, Friday, 4 September
Climate normal for this date — 60-year average.
0.01Upper Aliso, Saturday, 5 September
Climate normal for this date — 60-year average.
0.01Upper Aliso, Sunday, 6 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 Upper Aliso, 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 Upper Aliso, 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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