Weather in Half Moon Bay, CA
Half Moon Bay, Sunday, 8 November, 03:48
Clear. Feels like 57°. High 70°, low 51°.
Monthly outlook for Half Moon Bay, CA: average high 65°, average low 54.5°. That is 1.9° above the climate normal for November. Precipitation is expected on 5 days (about 4.3 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 13 November (74.5°), the coolest 9 November (46.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 November – 17 November | 68.1° | 62.4° | +3.2° |
| 18 November – 27 November | 59.7° | 59.8° | -0° |
| 28 November – 7 December | at normal | 58.1° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Belmont (8 mi).
0
Half Moon Bay, Monday, 9 November
Overcast. High 73°, low 47°.
0
Half Moon Bay, Tuesday, 10 November
Clear. High 73°, low 58°.
0Half Moon Bay, Wednesday, 11 November
Clear. High 72°, low 57°.
0Half Moon Bay, Thursday, 12 November
Overcast. High 71°, low 55°.
0Half Moon Bay, Friday, 13 November
Clear. High 74°, low 56°.
0
Half Moon Bay, Saturday, 14 November
Partly cloudy. High 67°, low 60°.
0.63
Half Moon Bay, Sunday, 15 November
Rain. High 61°, low 55°.
0Half Moon Bay, Monday, 16 November
Overcast. High 59°, low 53°.
0.34Half Moon Bay, Tuesday, 17 November
Rain. High 60°, low 55°.
0.49Half Moon Bay, Wednesday, 18 November
Rain. High 59°, low 53°.
0.02Half Moon Bay, Thursday, 19 November
Light rain. High 59°, low 54°.
0Half Moon Bay, Friday, 20 November
Overcast. High 61°, low 53°.
1.33Half Moon Bay, Saturday, 21 November
Heavy rain. High 59°, low 55°.
0Half Moon Bay, Sunday, 22 November
Overcast. High 61°, low 53°.
1.44Half Moon Bay, Monday, 23 November
Heavy rain. High 59°, low 56°.
0.08
Half Moon Bay, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.06Half Moon Bay, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.08Half Moon Bay, Thursday, 26 November
Climate normal for this date — 60-year average.
0.07Half Moon Bay, Friday, 27 November
Climate normal for this date — 60-year average.
0.11Half Moon Bay, Saturday, 28 November
Climate normal for this date — 60-year average.
0.12Half Moon Bay, Sunday, 29 November
Climate normal for this date — 60-year average.
0.16Half Moon Bay, Monday, 30 November
Climate normal for this date — 60-year average.
0.11Half Moon Bay, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.17Half Moon Bay, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.12Half Moon Bay, Thursday, 3 December
Climate normal for this date — 60-year average.
0.07Half Moon Bay, Friday, 4 December
Climate normal for this date — 60-year average.
0.08Half Moon Bay, Saturday, 5 December
Climate normal for this date — 60-year average.
0.07Half Moon Bay, Sunday, 6 December
Climate normal for this date — 60-year average.
0.09Half Moon Bay, Monday, 7 December
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 Half Moon Bay, 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 Half Moon Bay, 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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