Weather in San Anselmo, CA
San Anselmo, Saturday, 8 August, 18:34
Clear. Feels like 63°. High 85°, low 60°.
Monthly outlook for San Anselmo, CA: average high 70.4°, average low 56.2°. That is 1° below the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.0 inches. The warmest day looks like 9 August (87.1°), the coolest 20 August (54°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 71.9° | 72.5° | -0.3° |
| 18 August – 27 August | 68° | 72.1° | -2.3° |
| 28 August – 6 September | at normal | 74.1° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Marin City (8 mi).
0San Anselmo, Sunday, 9 August
Clear. High 87°, low 59°.
0San Anselmo, Monday, 10 August
Clear. High 75°, low 55°.
0San Anselmo, Tuesday, 11 August
Clear. High 70°, low 55°.
0
San Anselmo, Wednesday, 12 August
Mostly clear. High 66°, low 56°.
0
San Anselmo, Thursday, 13 August
Partly cloudy. High 64°, low 57°.
0San Anselmo, Friday, 14 August
Clear. High 67°, low 57°.
0San Anselmo, Saturday, 15 August
Clear. High 69°, low 56°.
0
San Anselmo, Sunday, 16 August
Overcast. High 68°, low 56°.
0San Anselmo, Monday, 17 August
Overcast. High 67°, low 57°.
0San Anselmo, Tuesday, 18 August
Partly cloudy. High 69°, low 55°.
0San Anselmo, Wednesday, 19 August
Mostly clear. High 69°, low 55°.
0San Anselmo, Thursday, 20 August
Overcast. High 67°, low 54°.
0San Anselmo, Friday, 21 August
Overcast. High 67°, low 55°.
0San Anselmo, Saturday, 22 August
Overcast. High 65°, low 56°.
0San Anselmo, Sunday, 23 August
Clear. High 69°, low 56°.
0San Anselmo, Monday, 24 August
Climate normal for this date — 60-year average.
0San Anselmo, Tuesday, 25 August
Climate normal for this date — 60-year average.
0San Anselmo, Wednesday, 26 August
Climate normal for this date — 60-year average.
0San Anselmo, Thursday, 27 August
Climate normal for this date — 60-year average.
0San Anselmo, Friday, 28 August
Climate normal for this date — 60-year average.
0San Anselmo, Saturday, 29 August
Climate normal for this date — 60-year average.
0San Anselmo, Sunday, 30 August
Climate normal for this date — 60-year average.
0San Anselmo, Monday, 31 August
Climate normal for this date — 60-year average.
0San Anselmo, Tuesday, 1 September
Climate normal for this date — 60-year average.
0San Anselmo, Wednesday, 2 September
Climate normal for this date — 60-year average.
0San Anselmo, Thursday, 3 September
Climate normal for this date — 60-year average.
0San Anselmo, Friday, 4 September
Climate normal for this date — 60-year average.
0San Anselmo, Saturday, 5 September
Climate normal for this date — 60-year average.
0San Anselmo, Sunday, 6 September
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 Anselmo, 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 Anselmo, 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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