Weather forecast for today
San Marcos, CA

Weather forecast for today

Wednesday, Jun 18.

Sunny
5:38 am

8:01 pm
PDT
Sunny
82°F / 59°F
  • Wind: 9mph WSW
  • Humidity: 49%
  • Precip. probability: 1%
  • Precipitation: 0"
  • UV index: 10
Today, on Wednesday, June 18, sunny conditions are expected to continue.
The temperature scale will run from a maximum of a temperate 82.4°F to a minimum of a refreshing 59°F.
The maximum heat index, which integrates air moisture with ambient temperature, is assessed at 82.4°F.
The forecast high of 82.4°F is more in line with July's average of 80.2°F than June's 75.2°F.
Sunrise was at 5:38 am and sunset will be at 8:01 pm; the daylight will last for 14h and 23min.

Current condition

Sunny
2:33 pm PDT
Sunny
  • 81°F
  • Feels like: 81°F
  • Wind: 9mph SW
  • Humidity: 45%
  • Dewpoint: 57°F
  • Pressure: 29.77"Hg
  • Precipitation: 0"
  • Visibility: 9mi
  • UV index: 9
At the moment, the perfect day for a walk, with a clear sky and a warm sun.
The temperature is a warm 80.6°F. The current temperature is nearly at the maximum 82.4°F for today.

Frequently asked questions

What is the temperature now?
The temperature at 2:33 pm PDT is 80.6°F.
What is the weather forecast for San Marcos for today?
Today, skies will stay clear and sunny.
What will be the highest temperature today?
Today, the maximum temperature will be 82.4°F, while the minimum temperature will be 59°F. The maximum heat index, which adjusts the air temperature based on humidity, is estimated at 82.4°F.
The highest temperature will be moderately higher than the average maximum of 75.2°F in June. The lowest temperature will be in line with the average low of 56.5°F.
When is the sunrise / sunset today?
On Wednesday, in San Marcos, sunrise was at 5:38 am and sunset will be at 8:01 pm (PDT).
How long is the day today?
In San Marcos, the length of the day today will be 14h and 23min.

Hourly weather forecast

3 pm
  • 81°F
  • Feels like:
    81°F
Sunny
Sunny
  • Wind: 9mph WSW
  • Pressure: 29.74"Hg
  • Humidity: 45%
  • Precip. probability: 0%
  • Precipitation: 0"
  • Visibility: 9mi
4 pm
  • 79°F
  • Feels like:
    81°F
Sunny
Sunny
  • Wind: 9mph WSW
  • Pressure: 29.74"Hg
  • Humidity: 48%
  • Precip. probability: 0%
  • Precipitation: 0"
  • Visibility: 10mi
5 pm
  • 77°F
  • Feels like:
    77°F
Sunny
Sunny
  • Wind: 8mph WSW
  • Pressure: 29.74"Hg
  • Humidity: 51%
  • Precip. probability: 0%
  • Precipitation: 0"
  • Visibility: 10mi
6 pm
  • 75°F
  • Feels like:
    75°F
Sunny
Sunny
  • Wind: 7mph WSW
  • Pressure: 29.74"Hg
  • Humidity: 57%
  • Precip. probability: 1%
  • Precipitation: 0"
  • Visibility: 10mi
7 pm
  • 72°F
  • Feels like:
    72°F
Mostly Sunny
Mostly Sunny
  • Wind: 6mph WSW
  • Pressure: 29.77"Hg
  • Humidity: 64%
  • Precip. probability: 1%
  • Precipitation: 0"
  • Visibility: 10mi
8 pm
  • 68°F
  • Feels like:
    68°F
Partly Cloudy
Partly Cloudy
  • Wind: 4mph SW
  • Pressure: 29.8"Hg
  • Humidity: 73%
  • Precip. probability: 2%
  • Precipitation: 0"
  • Visibility: 10mi
Sunset: 8:01 pm
9 pm
  • 64°F
  • Feels like:
    64°F
Partly Cloudy
Partly Cloudy
  • Wind: 3mph SW
  • Pressure: 29.8"Hg
  • Humidity: 80%
  • Precip. probability: 3%
  • Precipitation: 0"
  • Visibility: 10mi
10 pm
  • 64°F
  • Feels like:
    64°F
Partly Cloudy
Partly Cloudy
  • Wind: 2mph SW
  • Pressure: 29.8"Hg
  • Humidity: 84%
  • Precip. probability: 6%
  • Precipitation: 0"
  • Visibility: 9mi
11 pm
  • 64°F
  • Feels like:
    64°F
Partly Cloudy
Partly Cloudy
  • Wind: 2mph SSW
  • Pressure: 29.83"Hg
  • Humidity: 84%
  • Precip. probability: 7%
  • Precipitation: 0"
  • Visibility: 9mi
12 am
  • 63°F
  • Feels like:
    63°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 2mph SSW
  • Pressure: 29.8"Hg
  • Humidity: 86%
  • Precip. probability: 7%
  • Precipitation: 0"
  • Visibility: 7mi
For the rest of the day, a combination of sunny and cloud-filled weather is predicted.
The temperature will vary between a minimum of 64.4°F and a maximum of 80.6°F. The warmest part of the day is expected around 3 pm.
The expected temperature aligns more with July's average high than with June's 75.2°F. The lowest temperature is comparable to June's typical minimum of 56.5°F.
Updated: Jun 18, 2025 @ 21:33:22 UTC
Published by: Weather U.S. | About Us
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Weather Forecasting & Climate

San Marcos, California, USA

  • en: San Marcos, California, USA
  • es: San Marcos, California, EE.UU.
  • hr: San Markos, Kalifornija, SAD
  • sr: San Markos, Kalifornija, SAD
  • zh: 圣马可斯, 加利福尼亚州, 美国
  • Latitude: 33.143372°
  • Longitude: -117.166145°
  • Elevation: 581 ft
  • Current time: 2:40pm PDT
  • Sunrise: 5:38 am PDT
  • Sunset: 8:01 pm PDT
  • Timezone: America/Los_Angeles
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