Weather in San Marcos, TX
San Marcos, Saturday, 31 October, 09:05
Fog. Feels like 68°. High 82°, low 65°.
Monthly outlook for San Marcos, TX: average high 76.7°, average low 56.5°. That is 3° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 31 October (81.9°), the coolest 13 November (48.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 31 October – 9 November | 77.3° | 72.3° | +2.8° |
| 10 November – 19 November | 75.6° | 69.2° | +3.5° |
| 20 November – 29 November | at normal | 66.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Wimberley (12 mi).
0
San Marcos, Sunday, 1 November
Overcast. High 81°, low 64°.
0.02
San Marcos, Monday, 2 November
Light rain. High 80°, low 66°.
0.07San Marcos, Tuesday, 3 November
Rain. High 80°, low 64°.
0
San Marcos, Wednesday, 4 November
Clear. High 75°, low 57°.
0San Marcos, Thursday, 5 November
Clear. High 75°, low 54°.
0San Marcos, Friday, 6 November
Clear. High 75°, low 56°.
0
San Marcos, Saturday, 7 November
Partly cloudy. High 81°, low 57°.
0San Marcos, Sunday, 8 November
Clear. High 71°, low 57°.
0San Marcos, Monday, 9 November
Clear. High 73°, low 51°.
0San Marcos, Tuesday, 10 November
Overcast. High 75°, low 53°.
0San Marcos, Wednesday, 11 November
Partly cloudy. High 78°, low 54°.
0
San Marcos, Thursday, 12 November
Mostly clear. High 73°, low 56°.
0San Marcos, Friday, 13 November
Clear. High 73°, low 48°.
0San Marcos, Saturday, 14 November
Clear. High 76°, low 50°.
0San Marcos, Sunday, 15 November
Mostly clear. High 78°, low 51°.
0.09
San Marcos, Monday, 16 November
Climate normal for this date — 60-year average.
0.15San Marcos, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.11San Marcos, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.08San Marcos, Thursday, 19 November
Climate normal for this date — 60-year average.
0.09San Marcos, Friday, 20 November
Climate normal for this date — 60-year average.
0.07San Marcos, Saturday, 21 November
Climate normal for this date — 60-year average.
0.13San Marcos, Sunday, 22 November
Climate normal for this date — 60-year average.
0.07San Marcos, Monday, 23 November
Climate normal for this date — 60-year average.
0.17San Marcos, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.1San Marcos, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.11San Marcos, Thursday, 26 November
Climate normal for this date — 60-year average.
0.11San Marcos, Friday, 27 November
Climate normal for this date — 60-year average.
0.09San Marcos, Saturday, 28 November
Climate normal for this date — 60-year average.
0.06San Marcos, Sunday, 29 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 Marcos, TX 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, TX 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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