Weather in Three Arch Bay, CA
Three Arch Bay, Sunday, 9 August, 01:25
Clear. Feels like 70°. High 96°, low 69°.
Monthly outlook for Three Arch Bay, CA: average high 75.6°, average low 68.8°. That is 2.1° below 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 9 August (95.6°), the coolest 14 August (66.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 76.7° | 79.4° | -1.5° |
| 19 August – 28 August | 73.6° | 79.9° | -3.5° |
| 29 August – 7 September | at normal | 81.2° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Aliso Viejo (6 mi).
0
Three Arch Bay, Monday, 10 August
Partly cloudy. High 94°, low 69°.
0
Three Arch Bay, Tuesday, 11 August
Clear. High 74°, low 70°.
0Three Arch Bay, Wednesday, 12 August
Partly cloudy. High 72°, low 69°.
0
Three Arch Bay, Thursday, 13 August
Overcast. High 70°, low 67°.
0Three Arch Bay, Friday, 14 August
Overcast. High 70°, low 67°.
0Three Arch Bay, Saturday, 15 August
Overcast. High 72°, low 68°.
0Three Arch Bay, Sunday, 16 August
Overcast. High 74°, low 70°.
0Three Arch Bay, Monday, 17 August
Overcast. High 73°, low 69°.
0Three Arch Bay, Tuesday, 18 August
Overcast. High 72°, low 68°.
0Three Arch Bay, Wednesday, 19 August
Overcast. High 74°, low 69°.
0Three Arch Bay, Thursday, 20 August
Partly cloudy. High 73°, low 69°.
0Three Arch Bay, Friday, 21 August
Partly cloudy. High 74°, low 69°.
0Three Arch Bay, Saturday, 22 August
Clear. High 74°, low 69°.
0
Three Arch Bay, Sunday, 23 August
Mostly clear. High 73°, low 69°.
0Three Arch Bay, Monday, 24 August
Clear. High 74°, low 68°.
0Three Arch Bay, Tuesday, 25 August
Climate normal for this date — 60-year average.
0Three Arch Bay, Wednesday, 26 August
Climate normal for this date — 60-year average.
0Three Arch Bay, Thursday, 27 August
Climate normal for this date — 60-year average.
0Three Arch Bay, Friday, 28 August
Climate normal for this date — 60-year average.
0Three Arch Bay, Saturday, 29 August
Climate normal for this date — 60-year average.
0Three Arch Bay, Sunday, 30 August
Climate normal for this date — 60-year average.
0Three Arch Bay, Monday, 31 August
Climate normal for this date — 60-year average.
0.01Three Arch Bay, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.01Three Arch Bay, Wednesday, 2 September
Climate normal for this date — 60-year average.
0Three Arch Bay, Thursday, 3 September
Climate normal for this date — 60-year average.
0Three Arch Bay, Friday, 4 September
Climate normal for this date — 60-year average.
0.01Three Arch Bay, Saturday, 5 September
Climate normal for this date — 60-year average.
0.01Three Arch Bay, Sunday, 6 September
Climate normal for this date — 60-year average.
0Three Arch Bay, 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 Three Arch Bay, 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 Three Arch Bay, 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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