Weather forecast for todaySan Marcos, TX

Weather forecast for today

Current condition 1:52 pm CDT

  • 66°F
  • Feels like:
    66°F
Sunny
Sunny
  • Precipitation: 0"
  • Wind: 10mphNNE 30°
  • Humidity: 36%
  • Dewpoint: 37°F
  • Pressure: 30.43"Hg
  • Visibility: 10mi
  • UV index: 7
  • ▼
In San Marcos, currently, the weather is sunny with a crisp, clear sky.
The temperature is a comfortable 66.2°F. The current temperature is nearly at the maximum of today's expected 69.8°F.

Saturday Oct 17, 2026

  • 70°F
  • 46°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphNNE 23°
  • Humidity: 33%
  • UV index: 7
  • Sunrise: 7:35 am CDT
  • Sunset: 6:59 pm CDT
  • ▼
Today, in San Marcos, expect sunny weather with a crisp, clear sky.
Expected temperature values will span from a delightful 69.8°F down to a frosty 46.4°F.
It will feel colder, with a temperature more typical of November's average maximum of 68.2°F.
Sunrise was at 7:35 am and sunset will be at 6:59 pm; the daylight will last for 11h and 24min.

Hourly overview

Hourly temperatures

Warmest period: 3 pm - 5 pm 68°C.
Coldest hour: 11 pm 54°C.

Chance of precipitation

Highest chance: 2 pm - 11 pm 0%.

Hourly weather forecast

  • 2 pm
  • 66°F
  • Feels like:
    66°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphNNE 21°
  • Humidity: 36%
  • Pressure: 30.42"Hg
  • Visibility: 10mi
  • UV index: 7
  • ▼
  • 3 pm
  • 68°F
  • Feels like:
    68°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphNNE 21°
  • Humidity: 34%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 4 pm
  • 68°F
  • Feels like:
    68°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphNNE 24°
  • Humidity: 32%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 5 pm
  • 68°F
  • Feels like:
    68°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphNNE 24°
  • Humidity: 31%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 66°F
  • Feels like:
    66°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphNNE 27°
  • Humidity: 31%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:59 pm
  • 7 pm
  • 64°F
  • Feels like:
    64°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNNE 31°
  • Humidity: 35%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 59°F
  • Feels like:
    59°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphNNE 20°
  • Humidity: 42%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 pm
  • 57°F
  • Feels like:
    57°F
Mostly Clear
Mostly Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNNE 13°
  • Humidity: 47%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 55°F
  • Feels like:
    54°F
Mostly Clear
Mostly Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNNE 12°
  • Humidity: 51%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 54°F
  • Feels like:
    54°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphN 3°
  • Humidity: 54%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 12 am
  • 54°F
  • Feels like:
    52°F
Mostly Clear
Mostly Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphN 1°
  • Humidity: 57%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
For the remainder of Saturday, a combination of sun-filled and cloudy weather is forecasted.
The temperature will vary between the highest temperature of 68°F and the lowest temperature of 53.6°F. The warmest part of the day will be from 3 pm to 5 pm.
The maximum temperature today will be more alike with November's average high of 68.2°F than October's usual of 79°F. The lowest temperature is also more in line with November's average minimum of 51.8°F than the usual minimum of 61°F in October.
Updated: Oct 17, 2026 @ 18:52:55 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (1:52 pm CDT) it is 66.2°F in San Marcos.

Today, clear skies and sunshine are anticipated.

Today, the maximum temperature will be 69.8°F, while the minimum temperature will be 46.4°F.
The maximum temperature will be significantly lower than the average highest temperature of 79°F in October. The lowest temperature today will be also uncommonly lower than the average low of 61°F.

On Saturday, in San Marcos, sunrise was at 7:35 am and sunset will be at 6:59 pm (CDT).

Today, the daylight will last for 11h and 24min.