Weather in San Quentin, CA
San Quentin, Sunday, 25 October, 16:09
Overcast. Feels like 69°. High 72°, low 47°.
Monthly outlook for San Quentin, CA: average high 63.7°, average low 52.6°. That is 1.1° below the climate normal for October. Precipitation is expected on 2 days (about 1.5 inches), against a normal of 3 days and 0.9 inches. The warmest day looks like 25 October (72°), the coolest 28 October (45.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 25 October – 3 November | 64.4° | 66.7° | -1.3° |
| 4 November – 13 November | 62.4° | 63.4° | -0.5° |
| 14 November – 23 November | at normal | 60.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Marin City (5 mi).
0San Quentin, Monday, 26 October
Overcast. High 72°, low 49°.
0
San Quentin, Tuesday, 27 October
Mostly clear. High 65°, low 48°.
0San Quentin, Wednesday, 28 October
Mostly clear. High 67°, low 45°.
0San Quentin, Thursday, 29 October
Overcast. High 64°, low 51°.
0
San Quentin, Friday, 30 October
Clear. High 65°, low 47°.
0San Quentin, Saturday, 31 October
Overcast. High 59°, low 49°.
0San Quentin, Sunday, 1 November
Overcast. High 60°, low 53°.
0San Quentin, Monday, 2 November
Overcast. High 61°, low 53°.
0San Quentin, Tuesday, 3 November
Overcast. High 60°, low 57°.
1.21
San Quentin, Wednesday, 4 November
Rain. High 61°, low 56°.
0.3San Quentin, Thursday, 5 November
Rain. High 62°, low 58°.
0San Quentin, Friday, 6 November
Overcast. High 63°, low 57°.
0San Quentin, Saturday, 7 November
Clear. High 62°, low 55°.
0
San Quentin, Sunday, 8 November
Partly cloudy. High 63°, low 57°.
0San Quentin, Monday, 9 November
Overcast. High 63°, low 59°.
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.
0.11San Quentin, Friday, 20 November
Climate normal for this date — 60-year average.
0.13San Quentin, Saturday, 21 November
Climate normal for this date — 60-year average.
0.12San Quentin, Sunday, 22 November
Climate normal for this date — 60-year average.
0.06San Quentin, Monday, 23 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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