Weather forecast for todaySan Ysidro, CA

Weather forecast for today

Current condition 10:49 am PDT

  • 88°F
  • Feels like:
    88°F
Sunny
Sunny
  • Precipitation: 0"
  • Wind: 13mphE 90°
  • Humidity: 22%
  • Dewpoint: 45°F
  • Pressure: 29.99"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
Currently, the sun is shining brightly, and temperatures are comfortable.
The temperature is a hot 87.8°F. The current temperature is almost at the maximum anticipated 89.6°F for today.

Saturday Oct 17, 2026

  • 90°F
  • 66°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 14mphESE 104°
  • Humidity: 22%
  • UV index: 6
  • Sunrise: 6:53 am PDT
  • Sunset: 6:13 pm PDT
  • ▼
Today, on Saturday, October 17, sunshine will prevail for most of the day.
The temperature variation is forecasted to range from a maximum of a hot 89.6°F to a minimum of a comfortable 66.2°F.
Meteorological data shows 89.6°F is more characteristic of September's climate profile than October's.
Sunrise was at 6:53 am and sunset will be at 6:13 pm; the daylight will last for 11h and 19min.

Hourly overview

Hourly temperatures

Warmest hour: 1 pm 90°C.
Coldest hour: 1 am 72°C.

Chance of precipitation

Highest chance: 1 pm 3%.

Hourly weather forecast

  • 11 am
  • 88°F
  • Feels like:
    88°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphE 86°
  • Humidity: 21%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 12 pm
  • 90°F
  • Feels like:
    90°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphE 88°
  • Humidity: 20%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 6
  • ▼
  • 1 pm
  • 90°F
  • Feels like:
    90°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 13mphE 98°
  • Humidity: 18%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 6
  • ▼
  • 2 pm
  • 88°F
  • Feels like:
    88°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 13mphESE 103°
  • Humidity: 21%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 3 pm
  • 88°F
  • Feels like:
    88°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 13mphESE 106°
  • Humidity: 22%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 86°F
  • Feels like:
    86°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 13mphESE 111°
  • Humidity: 23%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 5 pm
  • 84°F
  • Feels like:
    84°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 14mphESE 116°
  • Humidity: 25%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 pm
  • 81°F
  • Feels like:
    81°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphSE 126°
  • Humidity: 27%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:13 pm
  • 7 pm
  • 77°F
  • Feels like:
    77°F
Mostly Clear
Mostly Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphSE 124°
  • Humidity: 28%
  • 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: 9mphESE 122°
  • Humidity: 29%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 pm
  • 75°F
  • Feels like:
    75°F
Mostly Clear
Mostly Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphESE 112°
  • Humidity: 29%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 75°F
  • Feels like:
    75°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphESE 106°
  • Humidity: 29%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 73°F
  • Feels like:
    73°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphESE 108°
  • Humidity: 30%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, primarily gloomy and occasionally dry and sunny weather is predicted.
The temperature will vary between a maximum of 89.6°F and a minimum of 73.4°F. The hottest part of the day will be at noon and 1 pm.
Today, the temperature will be closer to September's norm than to October's average of 75.6°F. Today, the nighttime low will be slightly warmer than October's typical minimum of 61.2°F.
Updated: Oct 17, 2026 @ 17:49:14 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (10:49 am PDT) it is 87.8°F in San Ysidro.

On Saturday, sunny intervals will be long-lasting, with few disruptions.

Today, the highest temperature in San Ysidro will be 89.6°F, while the lowest temperature will be 66.2°F.
The highest temperature will be uncommonly higher than the average maximum of 75.6°F in October. The lowest temperature today will be moderately higher than the average low temperature.

On Saturday, in San Ysidro, sunrise was at 6:53 am and sunset will be at 6:13 pm (PDT).

In San Ysidro, the length of the day today will be 11h and 19min.