Weather in Upper Aliso, CA
Upper Aliso, Saturday, 31 October, 05:28
Overcast. Feels like 55°. High 66°, low 55°.
Monthly outlook for Upper Aliso, CA: average high 73.1°, average low 58.2°. That is 1.3° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 2 days and 0.6 inches. The warmest day looks like 8 November (83.4°), the coolest 2 November (50.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 31 October – 9 November | 72.8° | 71.3° | +0.8° |
| 10 November – 19 November | 73.7° | 69.2° | +2.5° |
| 20 November – 29 November | at normal | 67° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Mission Viejo (6 mi).
0.28
Upper Aliso, Sunday, 1 November
Rain. High 64°, low 53°.
0
Upper Aliso, Monday, 2 November
Clear. High 68°, low 51°.
0Upper Aliso, Tuesday, 3 November
Clear. High 72°, low 57°.
0
Upper Aliso, Wednesday, 4 November
Partly cloudy. High 68°, low 56°.
0Upper Aliso, Thursday, 5 November
Overcast. High 70°, low 55°.
0Upper Aliso, Friday, 6 November
Clear. High 75°, low 57°.
0Upper Aliso, Saturday, 7 November
Clear. High 81°, low 63°.
0
Upper Aliso, Sunday, 8 November
Mostly clear. High 83°, low 66°.
0Upper Aliso, Monday, 9 November
Partly cloudy. High 81°, low 65°.
0Upper Aliso, Tuesday, 10 November
Overcast. High 74°, low 61°.
0.11Upper Aliso, Wednesday, 11 November
Light rain. High 66°, low 57°.
0Upper Aliso, Thursday, 12 November
Clear. High 72°, low 54°.
0Upper Aliso, Friday, 13 November
Partly cloudy. High 76°, low 59°.
0Upper Aliso, Saturday, 14 November
Partly cloudy. High 78°, low 60°.
0Upper Aliso, Sunday, 15 November
Overcast. High 76°, low 61°.
0.04Upper Aliso, Monday, 16 November
Climate normal for this date — 60-year average.
0.03Upper Aliso, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.04Upper Aliso, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.04Upper Aliso, Thursday, 19 November
Climate normal for this date — 60-year average.
0.07Upper Aliso, Friday, 20 November
Climate normal for this date — 60-year average.
0.06Upper Aliso, Saturday, 21 November
Climate normal for this date — 60-year average.
0.04Upper Aliso, Sunday, 22 November
Climate normal for this date — 60-year average.
0.01Upper Aliso, Monday, 23 November
Climate normal for this date — 60-year average.
0.02Upper Aliso, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.05Upper Aliso, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.07Upper Aliso, Thursday, 26 November
Climate normal for this date — 60-year average.
0.04Upper Aliso, Friday, 27 November
Climate normal for this date — 60-year average.
0.08Upper Aliso, Saturday, 28 November
Climate normal for this date — 60-year average.
0.11Upper Aliso, Sunday, 29 November
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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