Weather in Mount Wilson, CA
Mount Wilson, Saturday, 8 August, 19:12
Clear. Feels like 71°. High 81°, low 53°.
Monthly outlook for Mount Wilson, CA: average high 79°, average low 56.3°. That is 4.9° 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 18 August (83.7°), the coolest 22 August (52.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 79° | 88.2° | -5.1° |
| 18 August – 27 August | 79° | 87.8° | -4.9° |
| 28 August – 6 September | at normal | 89.7° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Pasadena (6 mi).
0
Mount Wilson, Sunday, 9 August
Partly cloudy. High 83°, low 55°.
0Mount Wilson, Monday, 10 August
Clear. High 83°, low 56°.
0
Mount Wilson, Tuesday, 11 August
Overcast. High 80°, low 60°.
0Mount Wilson, Wednesday, 12 August
Clear. High 78°, low 55°.
0Mount Wilson, Thursday, 13 August
Overcast. High 73°, low 54°.
0Mount Wilson, Friday, 14 August
Overcast. High 71°, low 54°.
0Mount Wilson, Saturday, 15 August
Clear. High 77°, low 54°.
0Mount Wilson, Sunday, 16 August
Overcast. High 80°, low 57°.
0Mount Wilson, Monday, 17 August
Clear. High 83°, low 60°.
0Mount Wilson, Tuesday, 18 August
Overcast. High 84°, low 63°.
0Mount Wilson, Wednesday, 19 August
Overcast. High 83°, low 61°.
0Mount Wilson, Thursday, 20 August
Clear. High 79°, low 58°.
0Mount Wilson, Friday, 21 August
Clear. High 76°, low 54°.
0Mount Wilson, Saturday, 22 August
Clear. High 76°, low 53°.
0Mount Wilson, Sunday, 23 August
Clear. High 77°, low 54°.
0
Mount Wilson, Monday, 24 August
Climate normal for this date — 60-year average.
0Mount Wilson, Tuesday, 25 August
Climate normal for this date — 60-year average.
0Mount Wilson, Wednesday, 26 August
Climate normal for this date — 60-year average.
0Mount Wilson, Thursday, 27 August
Climate normal for this date — 60-year average.
0Mount Wilson, Friday, 28 August
Climate normal for this date — 60-year average.
0Mount Wilson, Saturday, 29 August
Climate normal for this date — 60-year average.
0Mount Wilson, Sunday, 30 August
Climate normal for this date — 60-year average.
0Mount Wilson, Monday, 31 August
Climate normal for this date — 60-year average.
0.01Mount Wilson, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.03Mount Wilson, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.01Mount Wilson, Thursday, 3 September
Climate normal for this date — 60-year average.
0.01Mount Wilson, Friday, 4 September
Climate normal for this date — 60-year average.
0.02Mount Wilson, Saturday, 5 September
Climate normal for this date — 60-year average.
0.01Mount Wilson, Sunday, 6 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 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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