Weather in San Francisco, CA
San Francisco, Sunday, 18 October, 23:35
Overcast. Feels like 55°. High 76°, low 52°.
Monthly outlook for San Francisco, CA: average high 63.2°, average low 53.8°. That is 1.3° below the climate normal for October. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 18 October (76.2°), the coolest 20 October (45.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 65.4° | 66.3° | -0.5° |
| 28 October – 6 November | 59.7° | 63.9° | -2.3° |
| 7 November – 16 November | at normal | 60.8° | — |
October records over 66 years
0
San Francisco, Monday, 19 October
Partly cloudy. High 67°, low 48°.
0.02
San Francisco, Tuesday, 20 October
Light rain. High 63°, low 45°.
0.12San Francisco, Wednesday, 21 October
Rain. High 65°, low 58°.
0San Francisco, Thursday, 22 October
Partly cloudy. High 63°, low 56°.
0
San Francisco, Friday, 23 October
Clear. High 64°, low 58°.
0San Francisco, Saturday, 24 October
Clear. High 66°, low 57°.
0San Francisco, Sunday, 25 October
Overcast. High 67°, low 59°.
0San Francisco, Monday, 26 October
Clear. High 64°, low 57°.
0San Francisco, Tuesday, 27 October
Overcast. High 59°, low 55°.
0.06San Francisco, Wednesday, 28 October
Light rain. High 56°, low 52°.
0.06San Francisco, Thursday, 29 October
Light rain. High 58°, low 50°.
0San Francisco, Friday, 30 October
Partly cloudy. High 58°, low 53°.
0San Francisco, Saturday, 31 October
Clear. High 64°, low 54°.
0San Francisco, Sunday, 1 November
Clear. High 63°, low 56°.
0San Francisco, Monday, 2 November
Overcast. High 59°, low 53°.
0.03
San Francisco, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.03San Francisco, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.06San Francisco, Thursday, 5 November
Climate normal for this date — 60-year average.
0.05San Francisco, Friday, 6 November
Climate normal for this date — 60-year average.
0.06San Francisco, Saturday, 7 November
Climate normal for this date — 60-year average.
0.07San Francisco, Sunday, 8 November
Climate normal for this date — 60-year average.
0.07San Francisco, Monday, 9 November
Climate normal for this date — 60-year average.
0.11San Francisco, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08San Francisco, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07San Francisco, Thursday, 12 November
Climate normal for this date — 60-year average.
0.12San Francisco, Friday, 13 November
Climate normal for this date — 60-year average.
0.06San Francisco, Saturday, 14 November
Climate normal for this date — 60-year average.
0.07San Francisco, Sunday, 15 November
Climate normal for this date — 60-year average.
0.1San Francisco, Monday, 16 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 Francisco, 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 Francisco, 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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