Weather forecast for todaySan Marcos, TX

Weather forecast for today

Current condition 3:07 am CDT

  • 54°F
  • Feels like:
    52°F
Fair
Fair
  • Precipitation: 0"
  • Wind: 4mphNW 320°
  • Humidity: 74%
  • Dewpoint: 45°F
  • Pressure: 30.23"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
In San Marcos, at the moment, mild temperatures and clear skies define the day’s fair conditions.
The temperature is a crisp 53.6°F, with the felt air temperature closely matching at 51.8°F. The present temperature is at its lowest of the day.

Monday Oct 19, 2026

  • 79°F
  • 54°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphE 87°
  • Humidity: 44%
  • UV index: 7
  • Sunrise: 7:36 am CDT
  • Sunset: 6:56 pm CDT
  • ▼
On Monday, in San Marcos, a mix of clouds and blue sky is expected.
Temperatures are predicted to peak at a warm 78.8°F and drop to a minimum of a fresh 53.6°F.
This predicted maximum temperature is expected to mirror October's typical high of 79°F.
Sunrise will be at 7:36 am and sunset at 6:56 pm; the daylight will last for 11h and 20min.

Hourly overview

Hourly temperatures

Warmest hour: 4 pm 77°C.
Coldest period: 4 am - 8 am 52°C.

Chance of precipitation

Highest chance: 1%.

Hourly weather forecast

  • 4 am
  • 52°F
  • Feels like:
    52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphNNE 22°
  • Humidity: 74%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 52°F
  • Feels like:
    50°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphNNE 21°
  • Humidity: 76%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:36 am
  • 8 am
  • 52°F
  • Feels like:
    52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphNNE 12°
  • Humidity: 72%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 64°F
  • Feels like:
    64°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphENE 70°
  • Humidity: 49%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 72°F
  • Feels like:
    72°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphESE 102°
  • Humidity: 36%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 6
  • ▼
  • 2 pm
  • 75°F
  • Feels like:
    75°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphESE 109°
  • Humidity: 31%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 7
  • ▼
  • 4 pm
  • 77°F
  • Feels like:
    77°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphESE 116°
  • Humidity: 30%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 6 pm
  • 75°F
  • Feels like:
    75°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphESE 121°
  • Humidity: 35%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:56 pm
  • 8 pm
  • 66°F
  • Feels like:
    66°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphE 93°
  • Humidity: 52%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 63°F
  • Feels like:
    63°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphE 86°
  • Humidity: 65%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, primarily dull and occasionally mostly clear weather is predicted.
The temperature will be between a minimum of 51.8°F and a maximum of 77°F. The warmest part of the day will be from 3 pm to 5 pm.
The forecasted high will be resembling the typical October maximum of 79°F. The expected low will be more similar to what’s common in November than the current October average of 61°F.
Updated: Oct 19, 2026 @ 08:07:48 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The temperature at 3:07 am CDT is 53.6°F.

Today, clouds and sunshine will create a dynamic sky throughout the day.

Today, the maximum temperature in San Marcos, Texas, will be 78.8°F, while the minimum temperature will be 53.6°F.
The highest temperature will be in line with the average maximum of 79°F in October. The lowest temperature will be a few degrees lower than the average low of 61°F.

On Monday, in San Marcos, sunrise will be at 7:36 am and sunset at 6:56 pm (CDT).

In San Marcos, Texas, the length of the day today will be 11h and 20min.