Weather in San Geronimo, CA
San Geronimo, Tuesday, 20 October, 17:45
Overcast. Feels like 63°. High 67°, low 48°.
Monthly outlook for San Geronimo, CA: average high 68.2°, average low 52.7°. That is 1.9° above the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 2 days and 0.9 inches. The warmest day looks like 24 October (75°), the coolest 20 October (48.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 71.2° | 65.3° | +3.3° |
| 30 October – 8 November | 63.3° | 63.4° | -0° |
| 9 November – 18 November | at normal | 60.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Bolinas (7 mi).
0San Geronimo, Wednesday, 21 October
Overcast. High 70°, low 58°.
0.18
San Geronimo, Thursday, 22 October
Rain. High 68°, low 52°.
0
San Geronimo, Friday, 23 October
Clear. High 72°, low 49°.
0San Geronimo, Saturday, 24 October
Clear. High 75°, low 50°.
0San Geronimo, Sunday, 25 October
Overcast. High 75°, low 49°.
0
San Geronimo, Monday, 26 October
Partly cloudy. High 74°, low 55°.
0San Geronimo, Tuesday, 27 October
Overcast. High 73°, low 58°.
0
San Geronimo, Wednesday, 28 October
Mostly clear. High 71°, low 55°.
0San Geronimo, Thursday, 29 October
Mostly clear. High 68°, low 53°.
0San Geronimo, Friday, 30 October
Overcast. High 65°, low 53°.
0San Geronimo, Saturday, 31 October
Mostly clear. High 63°, low 49°.
0San Geronimo, Sunday, 1 November
Clear. High 66°, low 50°.
0San Geronimo, Monday, 2 November
Partly cloudy. High 68°, low 53°.
0San Geronimo, Tuesday, 3 November
Overcast. High 60°, low 54°.
0.54San Geronimo, Wednesday, 4 November
Rain. High 59°, low 57°.
0.08San Geronimo, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07San Geronimo, Friday, 6 November
Climate normal for this date — 60-year average.
0.1San Geronimo, Saturday, 7 November
Climate normal for this date — 60-year average.
0.09San Geronimo, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11San Geronimo, Monday, 9 November
Climate normal for this date — 60-year average.
0.16San Geronimo, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.11San Geronimo, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.08San Geronimo, Thursday, 12 November
Climate normal for this date — 60-year average.
0.17San Geronimo, Friday, 13 November
Climate normal for this date — 60-year average.
0.05San Geronimo, Saturday, 14 November
Climate normal for this date — 60-year average.
0.11San Geronimo, Sunday, 15 November
Climate normal for this date — 60-year average.
0.16San Geronimo, Monday, 16 November
Climate normal for this date — 60-year average.
0.16San Geronimo, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08San Geronimo, Wednesday, 18 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 Geronimo, 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 Geronimo, 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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