Weather in San Quentin, CA
San Quentin, Wednesday, 21 October, 23:52
Partly cloudy. Feels like 57°. High 67°, low 57°.
Monthly outlook for San Quentin, CA: average high 66.2°, average low 54.8°. That is 0.4° below the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 2 days and 0.9 inches. The warmest day looks like 24 October (71.4°), the coolest 24 October (48.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 67.2° | 67.4° | -0.1° |
| 31 October – 9 November | 64.7° | 65° | -0.2° |
| 10 November – 19 November | at normal | 61.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Marin City (5 mi).
0.03
San Quentin, Thursday, 22 October
Light rain. High 66°, low 54°.
0
San Quentin, Friday, 23 October
Overcast. High 69°, low 51°.
0
San Quentin, Saturday, 24 October
Clear. High 71°, low 49°.
0
San Quentin, Sunday, 25 October
Mostly clear. High 71°, low 49°.
0San Quentin, Monday, 26 October
Overcast. High 70°, low 51°.
0San Quentin, Tuesday, 27 October
Overcast. High 66°, low 51°.
0San Quentin, Wednesday, 28 October
Clear. High 66°, low 58°.
0San Quentin, Thursday, 29 October
Overcast. High 64°, low 58°.
0San Quentin, Friday, 30 October
Mostly clear. High 61°, low 54°.
0San Quentin, Saturday, 31 October
Overcast. High 62°, low 54°.
0San Quentin, Sunday, 1 November
Clear. High 63°, low 56°.
0San Quentin, Monday, 2 November
Overcast. High 65°, low 57°.
0San Quentin, Tuesday, 3 November
Clear. High 66°, low 59°.
0San Quentin, Wednesday, 4 November
Clear. High 66°, low 59°.
0San Quentin, Thursday, 5 November
Clear. High 66°, low 58°.
0.07
San Quentin, Friday, 6 November
Climate normal for this date — 60-year average.
0.09San Quentin, Saturday, 7 November
Climate normal for this date — 60-year average.
0.08San Quentin, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09San Quentin, Monday, 9 November
Climate normal for this date — 60-year average.
0.14San Quentin, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.1San Quentin, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.08San Quentin, Thursday, 12 November
Climate normal for this date — 60-year average.
0.14San Quentin, Friday, 13 November
Climate normal for this date — 60-year average.
0.06San Quentin, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09San Quentin, Sunday, 15 November
Climate normal for this date — 60-year average.
0.12San Quentin, Monday, 16 November
Climate normal for this date — 60-year average.
0.13San Quentin, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.07San Quentin, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07San Quentin, Thursday, 19 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 San Quentin, 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 San Quentin, 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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