Weather in Cupertino, CA
Cupertino, Saturday, 10 October, 08:45
Partly cloudy. Feels like 57°. High 68°, low 53°.
Monthly outlook for Cupertino, CA: average high 80.6°, average low 57°. That is 3.8° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 17 October (92.3°), the coolest 11 October (47.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 October – 19 October | 78.4° | 74.6° | +2.1° |
| 20 October – 29 October | 84.2° | 71.1° | +7.3° |
| 30 October – 8 November | at normal | 68° | — |
October records over 66 years
0
Cupertino, Sunday, 11 October
Clear. High 69°, low 48°.
0Cupertino, Monday, 12 October
Clear. High 70°, low 50°.
0Cupertino, Tuesday, 13 October
Clear. High 73°, low 50°.
0Cupertino, Wednesday, 14 October
Partly cloudy. High 76°, low 53°.
0Cupertino, Thursday, 15 October
Clear. High 83°, low 54°.
0Cupertino, Friday, 16 October
Clear. High 89°, low 63°.
0Cupertino, Saturday, 17 October
Clear. High 92°, low 66°.
0
Cupertino, Sunday, 18 October
Overcast. High 86°, low 59°.
0
Cupertino, Monday, 19 October
Mostly clear. High 79°, low 55°.
0Cupertino, Tuesday, 20 October
Clear. High 83°, low 55°.
0Cupertino, Wednesday, 21 October
Clear. High 88°, low 63°.
0Cupertino, Thursday, 22 October
Partly cloudy. High 87°, low 62°.
0Cupertino, Friday, 23 October
Partly cloudy. High 79°, low 58°.
0Cupertino, Saturday, 24 October
Clear. High 81°, low 58°.
0Cupertino, Sunday, 25 October
Mostly clear. High 87°, low 63°.
0.08Cupertino, Monday, 26 October
Climate normal for this date — 60-year average.
0.02Cupertino, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.08Cupertino, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.06Cupertino, Thursday, 29 October
Climate normal for this date — 60-year average.
0.08Cupertino, Friday, 30 October
Climate normal for this date — 60-year average.
0.02Cupertino, Saturday, 31 October
Climate normal for this date — 60-year average.
0.05Cupertino, Sunday, 1 November
Climate normal for this date — 60-year average.
0.04Cupertino, Monday, 2 November
Climate normal for this date — 60-year average.
0.04Cupertino, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.03Cupertino, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.05Cupertino, Thursday, 5 November
Climate normal for this date — 60-year average.
0.06Cupertino, Friday, 6 November
Climate normal for this date — 60-year average.
0.08Cupertino, Saturday, 7 November
Climate normal for this date — 60-year average.
0.11Cupertino, Sunday, 8 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 Cupertino, 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 Cupertino, 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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