Weather forecast for todayLake San Marcos, CA

Weather forecast for today

Current condition 2:22 pm PDT

  • 90°F
  • Feels like:
    90°F
Partly Cloudy
Partly Cloudy
  • Precipitation: 0"
  • Wind: 14mphE 90°
  • Humidity: 16%
  • Dewpoint: 37°F
  • Pressure: 29.95"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
Currently, in Lake San Marcos, the sky is partially covered with clouds, offering glimpses of blue.
The temperature is a humid 89.6°F. The current temperature is almost at the maximum predicted 91.4°F for today.

Saturday Oct 17, 2026

  • 91°F
  • 64°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 14mphE 94°
  • Humidity: 18%
  • UV index: 5
  • Sunrise: 6:54 am PDT
  • Sunset: 6:13 pm PDT
  • ▼
Today, moderate cloud cover will mix with sunshine throughout the day.
A daytime temperature reaching up to a hot 91.4°F will sharply contrast with a nighttime low of a breezy 64.4°F.
Today, the temperature forecast of 91.4°F will better match September's climate average than that of October.
Sunrise was at 6:54 am and sunset will be at 6:13 pm; the daylight will last for 11h and 18min.

Hourly overview

Hourly temperatures

Warmest period: 3 pm - 4 pm 88°C.
Coldest hour: 12 am 70°C.

Chance of precipitation

Highest chance: 3 pm - 12 am 0%.

Hourly weather forecast

  • 3 pm
  • 88°F
  • Feels like:
    88°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 14mphE 94°
  • Humidity: 17%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 88°F
  • Feels like:
    88°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 13mphE 94°
  • Humidity: 17%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 5 pm
  • 86°F
  • Feels like:
    86°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphE 94°
  • Humidity: 18%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 pm
  • 81°F
  • Feels like:
    81°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphE 96°
  • Humidity: 22%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:13 pm
  • 7 pm
  • 77°F
  • Feels like:
    77°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphE 95°
  • Humidity: 23%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 75°F
  • Feels like:
    75°F
Mostly Clear
Mostly Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphE 92°
  • Humidity: 24%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 pm
  • 73°F
  • Feels like:
    73°F
Mostly Clear
Mostly Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphE 88°
  • Humidity: 27%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 73°F
  • Feels like:
    73°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphE 86°
  • Humidity: 28%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 72°F
  • Feels like:
    72°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphENE 74°
  • Humidity: 30%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 12 am
  • 70°F
  • Feels like:
    70°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphE 80°
  • Humidity: 32%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
For the rest of Saturday, cloudy conditions are likely to prevail.
The temperature will vary between a maximum of 87.8°F and a minimum of 71.6°F. The hottest part of the day will be at 3 pm and 4 pm.
Today, temperatures will be more close to the climate of September than the usual maximum in October. The minimum temperature will be also more close to September's average low of 63.3°F than October's typical value of 58.8°F.
Updated: Oct 17, 2026 @ 21:22:23 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The temperature at 2:22 pm PDT is 89.6°F.

Today, a partly cloudy outlook will keep the sky interesting throughout the day.

Today, the maximum temperature will be 91.4°F, while the minimum temperature will be 64.4°F.
The highest temperature today will be uncommonly higher than the average maximum of 75.4°F in October. The lowest temperature today will be a couple of degrees higher than the average low temperature.

On Saturday, in Lake San Marcos, sunrise was at 6:54 am and sunset will be at 6:13 pm (PDT).

Today, the daylight will last for 11h and 18min.