Weather in Mount Wilson, CA
Mount Wilson, Friday, 23 October, 19:18
Partly cloudy. Feels like 47°. High 53°, low 41°.
Monthly outlook for Mount Wilson, CA: average high 61.1°, average low 46°. That is 8° below the climate normal for October. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 7 November (75.5°), the coolest 29 October (39.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 23 October – 1 November | 57.8° | 76.2° | -10.2° |
| 2 November – 11 November | 66.8° | 73.1° | -3.5° |
| 12 November – 21 November | at normal | 69.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Altadena (5 mi).
0
Mount Wilson, Saturday, 24 October
Clear. High 63°, low 39°.
0Mount Wilson, Sunday, 25 October
Clear. High 61°, low 43°.
0Mount Wilson, Monday, 26 October
Clear. High 57°, low 44°.
0Mount Wilson, Tuesday, 27 October
Clear. High 58°, low 44°.
0
Mount Wilson, Wednesday, 28 October
Partly cloudy. High 56°, low 41°.
0
Mount Wilson, Thursday, 29 October
Overcast. High 52°, low 39°.
0Mount Wilson, Friday, 30 October
Overcast. High 53°, low 43°.
0Mount Wilson, Saturday, 31 October
Clear. High 59°, low 43°.
0Mount Wilson, Sunday, 1 November
Clear. High 65°, low 48°.
0Mount Wilson, Monday, 2 November
Overcast. High 67°, low 53°.
0.07
Mount Wilson, Tuesday, 3 November
Light rain. High 61°, low 50°.
0.09Mount Wilson, Wednesday, 4 November
Light rain. High 62°, low 47°.
0
Mount Wilson, Thursday, 5 November
Mostly clear. High 63°, low 49°.
0Mount Wilson, Friday, 6 November
Clear. High 71°, low 53°.
0Mount Wilson, Saturday, 7 November
Mostly clear. High 76°, low 57°.
0.09Mount Wilson, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04Mount Wilson, Monday, 9 November
Climate normal for this date — 60-year average.
0.03Mount Wilson, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Mount Wilson, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.02Mount Wilson, Thursday, 12 November
Climate normal for this date — 60-year average.
0.03Mount Wilson, Friday, 13 November
Climate normal for this date — 60-year average.
0.05Mount Wilson, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Mount 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.
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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