Weather in Foster City, CA
Foster City, Wednesday, 28 October, 23:18
Clear. Feels like 53°. High 70°, low 46°.
Monthly outlook for Foster City, CA: average high 66°, average low 55°. That is 0.5° above the climate normal for October. Precipitation is expected on 3 days (about 1.0 inches), against a normal of 3 days and 0.9 inches. The warmest day looks like 10 November (71.2°), the coolest 28 October (46.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 65.6° | 66.3° | -0.4° |
| 7 November – 16 November | 66.7° | 63° | +2.1° |
| 17 November – 26 November | at normal | 60.2° | — |
October records over 66 years
0
Foster City, Thursday, 29 October
Overcast. High 71°, low 50°.
0
Foster City, Friday, 30 October
Clear. High 65°, low 47°.
0Foster City, Saturday, 31 October
Overcast. High 64°, low 57°.
0.25
Foster City, Sunday, 1 November
Light rain. High 62°, low 55°.
0
Foster City, Monday, 2 November
Partly cloudy. High 66°, low 57°.
0Foster City, Tuesday, 3 November
Partly cloudy. High 66°, low 57°.
0.23Foster City, Wednesday, 4 November
Rain. High 67°, low 54°.
0Foster City, Thursday, 5 November
Overcast. High 62°, low 56°.
0Foster City, Friday, 6 November
Partly cloudy. High 64°, low 56°.
0Foster City, Saturday, 7 November
Overcast. High 65°, low 56°.
0Foster City, Sunday, 8 November
Clear. High 66°, low 57°.
0Foster City, Monday, 9 November
Overcast. High 68°, low 59°.
0Foster City, Tuesday, 10 November
Overcast. High 71°, low 59°.
0.02Foster City, Wednesday, 11 November
Light rain. High 68°, low 58°.
0.54Foster City, Thursday, 12 November
Rain. High 62°, low 55°.
0.12Foster City, Friday, 13 November
Climate normal for this date — 60-year average.
0.06Foster City, Saturday, 14 November
Climate normal for this date — 60-year average.
0.07
Foster City, Sunday, 15 November
Climate normal for this date — 60-year average.
0.1Foster City, Monday, 16 November
Climate normal for this date — 60-year average.
0.12Foster City, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.06Foster City, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.04Foster City, Thursday, 19 November
Climate normal for this date — 60-year average.
0.1Foster City, Friday, 20 November
Climate normal for this date — 60-year average.
0.08Foster City, Saturday, 21 November
Climate normal for this date — 60-year average.
0.08Foster City, Sunday, 22 November
Climate normal for this date — 60-year average.
0.05Foster City, Monday, 23 November
Climate normal for this date — 60-year average.
0.08Foster City, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.06Foster City, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.08Foster City, Thursday, 26 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 Foster City, 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 Foster City, 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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