Weather in Half Moon Bay, CA
Half Moon Bay, Sunday, 15 November, 10:57
Fog. Feels like 63°. High 64°, low 52°.
Monthly outlook for Half Moon Bay, CA: average high 60°, average low 52.4°. That is 0.1° above the climate normal for November. Precipitation is expected on 10 days (about 3.9 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 15 November (63.6°), the coolest 19 November (50.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 November – 24 November | 59.9° | 60.6° | -0.4° |
| 25 November – 4 December | 60.1° | 58.5° | +0.9° |
| 5 December – 14 December | at normal | 56.8° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Belmont (8 mi).
0.16
Half Moon Bay, Monday, 16 November
Rain. High 58°, low 51°.
0.01Half Moon Bay, Tuesday, 17 November
Light rain. High 62°, low 50°.
1.05Half Moon Bay, Wednesday, 18 November
Heavy rain. High 62°, low 52°.
0.86Half Moon Bay, Thursday, 19 November
Rain. High 55°, low 50°.
0.18Half Moon Bay, Friday, 20 November
Light rain. High 60°, low 50°.
0.05Half Moon Bay, Saturday, 21 November
Light rain. High 59°, low 52°.
0.41Half Moon Bay, Sunday, 22 November
Rain. High 59°, low 54°.
0
Half Moon Bay, Monday, 23 November
Overcast. High 60°, low 53°.
0.42Half Moon Bay, Tuesday, 24 November
Rain. High 61°, low 55°.
0Half Moon Bay, Wednesday, 25 November
Overcast. High 59°, low 52°.
0Half Moon Bay, Thursday, 26 November
Overcast. High 61°, low 52°.
0.28Half Moon Bay, Friday, 27 November
Rain. High 61°, low 54°.
0.06Half Moon Bay, Saturday, 28 November
Light rain. High 59°, low 56°.
0Half Moon Bay, Sunday, 29 November
Overcast. High 60°, low 52°.
0
Half Moon Bay, Monday, 30 November
Clear. High 61°, low 52°.
0.11
Half 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.
0.07Half Moon Bay, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.07Half Moon Bay, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.12Half Moon Bay, Thursday, 10 December
Climate normal for this date — 60-year average.
0.13Half Moon Bay, Friday, 11 December
Climate normal for this date — 60-year average.
0.13Half Moon Bay, Saturday, 12 December
Climate normal for this date — 60-year average.
0.1Half Moon Bay, Sunday, 13 December
Climate normal for this date — 60-year average.
0.13Half Moon Bay, Monday, 14 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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