Weather in Alta, CA
Alta, Thursday, 8 October, 02:05
Clear. Feels like 71°. High 87°, low 62°.
Monthly outlook for Alta, CA: average high 71°, average low 50.3°. That is 0.5° below the climate normal for October. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 2 days and 1.3 inches. The warmest day looks like 8 October (87.1°), the coolest 23 October (41.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 October – 17 October | 71.2° | 72.8° | -0.9° |
| 18 October – 27 October | 70.5° | 69.1° | +0.8° |
| 28 October – 6 November | at normal | 64.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Foresthill (14 mi).
0
Alta, Friday, 9 October
Clear. High 85°, low 65°.
0Alta, Saturday, 10 October
Clear. High 72°, low 55°.
0
Alta, Sunday, 11 October
Light rain. High 63°, low 51°.
0.06Alta, Monday, 12 October
Light rain. High 59°, low 48°.
0Alta, Tuesday, 13 October
Clear. High 64°, low 42°.
0Alta, Wednesday, 14 October
Clear. High 62°, low 45°.
0Alta, Thursday, 15 October
Clear. High 70°, low 43°.
0Alta, Friday, 16 October
Clear. High 73°, low 42°.
0Alta, Saturday, 17 October
Clear. High 77°, low 47°.
0Alta, Sunday, 18 October
Clear. High 77°, low 50°.
0
Alta, Monday, 19 October
Overcast. High 78°, low 54°.
0Alta, Tuesday, 20 October
Clear. High 79°, low 55°.
0Alta, Wednesday, 21 October
Overcast. High 72°, low 54°.
0.21Alta, Thursday, 22 October
Rain. High 64°, low 51°.
0.06Alta, Friday, 23 October
Light rain. High 54°, low 41°.
0.22
Alta, Saturday, 24 October
Climate normal for this date — 60-year average.
0.17
Alta, Sunday, 25 October
Climate normal for this date — 60-year average.
0.19Alta, Monday, 26 October
Climate normal for this date — 60-year average.
0.05Alta, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.17Alta, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.11Alta, Thursday, 29 October
Climate normal for this date — 60-year average.
0.18Alta, Friday, 30 October
Climate normal for this date — 60-year average.
0.07Alta, Saturday, 31 October
Climate normal for this date — 60-year average.
0.11Alta, Sunday, 1 November
Climate normal for this date — 60-year average.
0.13Alta, Monday, 2 November
Climate normal for this date — 60-year average.
0.13Alta, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.13Alta, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.17Alta, Thursday, 5 November
Climate normal for this date — 60-year average.
0.19Alta, Friday, 6 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 Alta, 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 Alta, 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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