Weather in Half Moon Bay, CA
Half Moon Bay, Sunday, 15 November, 01:23
Clear. Feels like 55°. High 63°, low 55°.
Monthly outlook for Half Moon Bay, CA: average high 61.1°, average low 53.6°. That is 0.7° above the climate normal for November. Precipitation is expected on 8 days (about 5.9 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 29 November (64.3°), the coolest 17 November (49.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 November – 24 November | 60.2° | 60.6° | -0.3° |
| 25 November – 4 December | 62.6° | 58.5° | +2.3° |
| 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).
0.11
Half Moon Bay, Monday, 16 November
Light rain. High 58°, low 53°.
0Half Moon Bay, Tuesday, 17 November
Light rain. High 62°, low 50°.
1.48Half Moon Bay, Wednesday, 18 November
Heavy rain. High 62°, low 53°.
1.01Half Moon Bay, Thursday, 19 November
Rain. High 54°, low 50°.
0.55Half Moon Bay, Friday, 20 November
Rain. High 61°, low 51°.
0
Half Moon Bay, Saturday, 21 November
Overcast. High 59°, low 53°.
0.15Half Moon Bay, Sunday, 22 November
Light rain. High 58°, low 54°.
0.03Half Moon Bay, Monday, 23 November
Light rain. High 61°, low 55°.
0.42Half Moon Bay, Tuesday, 24 November
Rain. High 63°, low 59°.
1.81Half Moon Bay, Wednesday, 25 November
Heavy rain. High 61°, low 57°.
0
Half Moon Bay, Thursday, 26 November
Clear. High 62°, low 55°.
0Half Moon Bay, Friday, 27 November
Clear. High 63°, low 53°.
0Half Moon Bay, Saturday, 28 November
Overcast. High 63°, low 52°.
0Half Moon Bay, Sunday, 29 November
Overcast. High 64°, low 54°.
0Half Moon Bay, Monday, 30 November
Clear. High 63°, low 53°.
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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