Weather in San Marcos, CA
San Marcos, Thursday, 12 November, 22:00
Overcast. Feels like 65°. High 79°, low 57°.
Monthly outlook for San Marcos, CA: average high 66.9°, average low 54°. That is 0.7° below the climate normal for November. Precipitation is expected on 8 days (about 3.9 inches), against a normal of 2 days and 0.8 inches. The warmest day looks like 12 November (78.8°), the coolest 22 November (48.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 12 November – 21 November | 66.4° | 68.7° | -1.3° |
| 22 November – 1 December | 67.8° | 66.5° | +0.7° |
| 2 December – 11 December | at normal | 64.8° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Vista (5 mi).
0.24
San Marcos, Friday, 13 November
Rain. High 68°, low 54°.
0.25San Marcos, Saturday, 14 November
Rain. High 69°, low 56°.
0
San Marcos, Sunday, 15 November
Clear. High 70°, low 51°.
0.14San Marcos, Monday, 16 November
Light rain. High 69°, low 57°.
0.08San Marcos, Tuesday, 17 November
Light rain. High 63°, low 52°.
0
San Marcos, Wednesday, 18 November
Partly cloudy. High 67°, low 49°.
0.47San Marcos, Thursday, 19 November
Rain. High 63°, low 58°.
1.1San Marcos, Friday, 20 November
Rain. High 60°, low 54°.
1.56San Marcos, Saturday, 21 November
Rain. High 56°, low 49°.
0.09San Marcos, Sunday, 22 November
Light rain. High 60°, low 49°.
0San Marcos, Monday, 23 November
Clear. High 65°, low 52°.
0San Marcos, Tuesday, 24 November
Overcast. High 65°, low 54°.
0San Marcos, Wednesday, 25 November
Clear. High 69°, low 54°.
0San Marcos, Thursday, 26 November
Overcast. High 72°, low 57°.
0San Marcos, Friday, 27 November
Clear. High 76°, low 60°.
0.09San Marcos, Saturday, 28 November
Climate normal for this date — 60-year average.
0.1San Marcos, Sunday, 29 November
Climate normal for this date — 60-year average.
0.09
San Marcos, Monday, 30 November
Climate normal for this date — 60-year average.
0.02San Marcos, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.01San Marcos, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.05San Marcos, Thursday, 3 December
Climate normal for this date — 60-year average.
0.07San Marcos, Friday, 4 December
Climate normal for this date — 60-year average.
0.06San Marcos, Saturday, 5 December
Climate normal for this date — 60-year average.
0.1San Marcos, Sunday, 6 December
Climate normal for this date — 60-year average.
0.1San Marcos, Monday, 7 December
Climate normal for this date — 60-year average.
0.05San Marcos, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.02San Marcos, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.03San Marcos, Thursday, 10 December
Climate normal for this date — 60-year average.
0.06San Marcos, Friday, 11 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 San Marcos, 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 Marcos, 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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