Weather in San Geronimo, CA
San Geronimo, Tuesday, 20 October, 10:39
Overcast. Feels like 59°. High 67°, low 49°.
Monthly outlook for San Geronimo, CA: average high 68.5°, average low 53.4°. That is 2° above the climate normal for October. Precipitation is expected on 4 days (about 1.7 inches), against a normal of 2 days and 0.9 inches. The warmest day looks like 24 October (77.7°), the coolest 20 October (48.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 72.5° | 65.3° | +4° |
| 30 October – 8 November | 61.9° | 63.4° | -0.8° |
| 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).
0.01
San Geronimo, Wednesday, 21 October
Light rain. High 70°, low 55°.
0.02San Geronimo, Thursday, 22 October
Light rain. High 71°, low 51°.
0
San Geronimo, Friday, 23 October
Mostly clear. High 75°, low 49°.
0
San Geronimo, Saturday, 24 October
Clear. High 78°, low 51°.
0San Geronimo, Sunday, 25 October
Clear. High 76°, low 52°.
0San Geronimo, Monday, 26 October
Mostly clear. High 75°, low 55°.
0San Geronimo, Tuesday, 27 October
Overcast. High 74°, low 57°.
0San Geronimo, Wednesday, 28 October
Overcast. High 74°, low 58°.
0San Geronimo, Thursday, 29 October
Overcast. High 64°, low 53°.
0.02San Geronimo, Friday, 30 October
Light rain. High 63°, low 53°.
0.69San Geronimo, Saturday, 31 October
Rain. High 61°, low 56°.
0.85San Geronimo, Sunday, 1 November
Rain. High 61°, low 57°.
0.1San Geronimo, Monday, 2 November
Light rain. High 61°, low 55°.
0San Geronimo, Tuesday, 3 November
Overcast. High 62°, low 53°.
0San Geronimo, Wednesday, 4 November
Clear. High 62°, low 51°.
0.08San Geronimo, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07
San 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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