Weather in Mount Wilson, CA
Mount Wilson, Friday, 30 October, 13:33
Overcast. Feels like 47°. High 49°, low 46°.
Monthly outlook for Mount Wilson, CA: average high 55.8°, average low 42°. That is 9.6° below the climate normal for October. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 2 days and 0.6 inches. The warmest day looks like 8 November (67.6°), the coolest 2 November (31.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 30 October – 8 November | 56.4° | 74.2° | -9.9° |
| 9 November – 18 November | 54.9° | 70.6° | -8.7° |
| 19 November – 28 November | at normal | 67.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Altadena (5 mi).
0.15
Mount Wilson, Saturday, 31 October
Rain. High 53°, low 43°.
0.38Mount Wilson, Sunday, 1 November
Rain. High 49°, low 32°.
0
Mount Wilson, Monday, 2 November
Clear. High 54°, low 32°.
0Mount Wilson, Tuesday, 3 November
Clear. High 55°, low 39°.
0Mount Wilson, Wednesday, 4 November
Clear. High 54°, low 36°.
0Mount Wilson, Thursday, 5 November
Overcast. High 56°, low 39°.
0Mount Wilson, Friday, 6 November
Overcast. High 60°, low 46°.
0Mount Wilson, Saturday, 7 November
Clear. High 66°, low 46°.
0Mount Wilson, Sunday, 8 November
Clear. High 68°, low 48°.
0Mount Wilson, Monday, 9 November
Overcast. High 61°, low 48°.
0Mount Wilson, Tuesday, 10 November
Overcast. High 55°, low 43°.
0Mount Wilson, Wednesday, 11 November
Light rain. High 50°, low 42°.
0Mount Wilson, Thursday, 12 November
Overcast. High 60°, low 44°.
0
Mount Wilson, Friday, 13 November
Partly cloudy. High 58°, low 45°.
0.04Mount Wilson, Saturday, 14 November
Light rain. High 44°, low 43°.
0.06
Mount Wilson, Sunday, 15 November
Climate normal for this date — 60-year average.
0.04Mount Wilson, Monday, 16 November
Climate normal for this date — 60-year average.
0.05Mount Wilson, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.06Mount Wilson, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.05Mount Wilson, Thursday, 19 November
Climate normal for this date — 60-year average.
0.07Mount Wilson, Friday, 20 November
Climate normal for this date — 60-year average.
0.09Mount Wilson, Saturday, 21 November
Climate normal for this date — 60-year average.
0.06Mount Wilson, Sunday, 22 November
Climate normal for this date — 60-year average.
0.01Mount Wilson, Monday, 23 November
Climate normal for this date — 60-year average.
0.04Mount Wilson, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.04Mount Wilson, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.06Mount Wilson, Thursday, 26 November
Climate normal for this date — 60-year average.
0.03Mount Wilson, Friday, 27 November
Climate normal for this date — 60-year average.
0.07Mount Wilson, Saturday, 28 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 Mount Wilson, 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 Mount Wilson, 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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