Weather in Atherton, CA
Atherton, Friday, 16 October, 11:25
Clear. Feels like 80°. High 90°, low 53°.
Monthly outlook for Atherton, CA: average high 67.6°, average low 53.1°. That is 1.6° below the climate normal for October. Precipitation is expected on 1 day (about 0.6 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 17 October (91.4°), the coolest 25 October (49.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 16 October – 25 October | 68.9° | 71.6° | -1.5° |
| 26 October – 4 November | 65.3° | 68.5° | -1.8° |
| 5 November – 14 November | at normal | 64.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — West Menlo Park (1 mi).
0Atherton, Saturday, 17 October
Clear. High 91°, low 57°.
0
Atherton, Sunday, 18 October
Mostly clear. High 67°, low 55°.
0Atherton, Monday, 19 October
Mostly clear. High 62°, low 55°.
0.56
Atherton, Tuesday, 20 October
Rain. High 59°, low 56°.
0.01Atherton, Wednesday, 21 October
Light rain. High 63°, low 54°.
0.01Atherton, Thursday, 22 October
Light rain. High 65°, low 55°.
0
Atherton, Friday, 23 October
Overcast. High 57°, low 52°.
0Atherton, Saturday, 24 October
Clear. High 67°, low 51°.
0Atherton, Sunday, 25 October
Overcast. High 66°, low 50°.
0Atherton, Monday, 26 October
Mostly clear. High 63°, low 50°.
0Atherton, Tuesday, 27 October
Clear. High 65°, low 52°.
0Atherton, Wednesday, 28 October
Overcast. High 66°, low 56°.
0Atherton, Thursday, 29 October
Clear. High 65°, low 51°.
0Atherton, Friday, 30 October
Clear. High 67°, low 51°.
0Atherton, Saturday, 31 October
Overcast. High 66°, low 51°.
0.04Atherton, Sunday, 1 November
Climate normal for this date — 60-year average.
0.03Atherton, Monday, 2 November
Climate normal for this date — 60-year average.
0.04Atherton, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.03Atherton, 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.
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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