Weather in Atherton, CA
Atherton, Monday, 19 October, 08:56
Overcast. Feels like 57°. High 70°, low 53°.
Monthly outlook for Atherton, CA: average high 68.5°, average low 56.1°. That is 0.6° below the climate normal for October. Precipitation is expected on 6 days (about 1.2 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 26 October (74.8°), the coolest 20 October (47.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 69.9° | 70.4° | -0.3° |
| 29 October – 7 November | 66.2° | 67.7° | -0.8° |
| 8 November – 17 November | at normal | 63.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — West Menlo Park (1 mi).
0.17
Atherton, Tuesday, 20 October
Rain. High 70°, low 47°.
0.08Atherton, Wednesday, 21 October
Rain. High 66°, low 53°.
0Atherton, Thursday, 22 October
Overcast. High 67°, low 52°.
0
Atherton, Friday, 23 October
Clear. High 66°, low 52°.
0Atherton, Saturday, 24 October
Clear. High 69°, low 52°.
0Atherton, Sunday, 25 October
Overcast. High 74°, low 56°.
0Atherton, Monday, 26 October
Overcast. High 75°, low 62°.
0Atherton, Tuesday, 27 October
Overcast. High 72°, low 60°.
0Atherton, Wednesday, 28 October
Clear. High 70°, low 57°.
0Atherton, Thursday, 29 October
Overcast. High 70°, low 59°.
0.14Atherton, Friday, 30 October
Light rain. High 68°, low 59°.
0.13Atherton, Saturday, 31 October
Light rain. High 67°, low 59°.
0.65Atherton, Sunday, 1 November
Rain. High 66°, low 59°.
0Atherton, Monday, 2 November
Overcast. High 64°, low 57°.
0.04Atherton, Tuesday, 3 November
Light rain. High 61°, low 58°.
0.03
Atherton, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.05Atherton, Thursday, 5 November
Climate normal for this date — 60-year average.
0.05
Atherton, Friday, 6 November
Climate normal for this date — 60-year average.
0.07Atherton, Saturday, 7 November
Climate normal for this date — 60-year average.
0.08Atherton, Sunday, 8 November
Climate normal for this date — 60-year average.
0.06Atherton, Monday, 9 November
Climate normal for this date — 60-year average.
0.11Atherton, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.09Atherton, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Atherton, Thursday, 12 November
Climate normal for this date — 60-year average.
0.13Atherton, Friday, 13 November
Climate normal for this date — 60-year average.
0.06Atherton, Saturday, 14 November
Climate normal for this date — 60-year average.
0.07Atherton, Sunday, 15 November
Climate normal for this date — 60-year average.
0.11Atherton, Monday, 16 November
Climate normal for this date — 60-year average.
0.12Atherton, Tuesday, 17 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 Atherton, 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 Atherton, 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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