Weather in Mount Wilson, CA
Mount Wilson, Saturday, 14 November, 22:11
Mostly clear. Feels like 43°. High 53°, low 40°.
Monthly outlook for Mount Wilson, CA: average high 50.8°, average low 38.5°. That is 9.7° below the climate normal for November. Precipitation is expected on 7 days (about 2.0 inches), against a normal of 2 days and 0.9 inches. The warmest day looks like 29 November (61°), the coolest 17 November (30.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 14 November – 23 November | 47.8° | 69.3° | -11.9° |
| 24 November – 3 December | 55.9° | 66.5° | -5.9° |
| 4 December – 13 December | at normal | 64.5° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Altadena (5 mi).
0
Mount Wilson, Sunday, 15 November
Partly cloudy. High 56°, low 38°.
0.07
Mount Wilson, Monday, 16 November
Light rain. High 55°, low 37°.
0.13Mount Wilson, Tuesday, 17 November
Rain. High 43°, low 30°.
0
Mount Wilson, Wednesday, 18 November
Clear. High 42°, low 31°.
1.35Mount Wilson, Thursday, 19 November
Heavy rain. High 36°, low 31°.
0.08Mount Wilson, Friday, 20 November
Light rain. High 44°, low 30°.
0
Mount Wilson, Saturday, 21 November
Overcast. High 52°, low 40°.
0Mount Wilson, Sunday, 22 November
Overcast. High 49°, low 39°.
0Mount Wilson, Monday, 23 November
Clear. High 48°, low 38°.
0.04Mount Wilson, Tuesday, 24 November
Light rain. High 49°, low 39°.
0.21Mount Wilson, Wednesday, 25 November
Rain. High 51°, low 41°.
0Mount Wilson, Thursday, 26 November
Clear. High 57°, low 40°.
0Mount Wilson, Friday, 27 November
Overcast. High 57°, low 46°.
0Mount Wilson, Saturday, 28 November
Partly cloudy. High 60°, low 47°.
0Mount Wilson, Sunday, 29 November
Partly cloudy. High 61°, low 48°.
0.06Mount Wilson, Monday, 30 November
Climate normal for this date — 60-year average.
0.02
Mount Wilson, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.04Mount Wilson, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.08Mount Wilson, Thursday, 3 December
Climate normal for this date — 60-year average.
0.09Mount Wilson, Friday, 4 December
Climate normal for this date — 60-year average.
0.08Mount Wilson, Saturday, 5 December
Climate normal for this date — 60-year average.
0.13Mount Wilson, Sunday, 6 December
Climate normal for this date — 60-year average.
0.1Mount Wilson, Monday, 7 December
Climate normal for this date — 60-year average.
0.03Mount Wilson, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.03Mount Wilson, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.04Mount Wilson, Thursday, 10 December
Climate normal for this date — 60-year average.
0.09Mount Wilson, Friday, 11 December
Climate normal for this date — 60-year average.
0.06Mount Wilson, Saturday, 12 December
Climate normal for this date — 60-year average.
0.04Mount Wilson, Sunday, 13 December
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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