Weather forecast for 10 daysSan Ysidro, CA
Weather forecast for the weekend
Sunday Oct 18, 2026
- 86°F
- 63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 13mphWNW 288°
- Humidity: 31%
- UV index: 6
- Sunrise: 6:54 am PDT
- Sunset: 6:11 pm PDT
- details ▼
Today, in San Ysidro, sun-filled conditions are expected to persist.
The maximum predicted temperature is a tropical 86°F, while the minimum temperature will be a comfortable 62.6°F.
Today, the forecasted high of 86°F is more in line with September's average of 80.1°F than October's 75.6°F.
Sunrise will be at 6:54 am and sunset at 6:11 pm; the daylight will last for 11h and 17min.
The maximum predicted temperature is a tropical 86°F, while the minimum temperature will be a comfortable 62.6°F.
Today, the forecasted high of 86°F is more in line with September's average of 80.1°F than October's 75.6°F.
Sunrise will be at 6:54 am and sunset at 6:11 pm; the daylight will last for 11h and 17min.
10-day overview
Daily temperatures
Warmest day: today 86°C.
Coldest day: Thursday 72°C.
Coldest day: Thursday 72°C.
Chance of precipitation
Highest chance: Thursday 67%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 86°F
- 63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 13mphWNW 288°
- Humidity: 31%
- UV index: 6
- Sunrise: 6:54 am PDT
- Sunset: 6:11 pm PDT
- details ▼
- Monday
- Oct 19, 2026
- 81°F
- 63°F
Mostly Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 11mphWSW 245°
- Humidity: 55%
- UV index: 6
- Sunrise: 6:55 am PDT
- Sunset: 6:10 pm PDT
- details ▼
- Tuesday
- Oct 20, 2026
- 77°F
- 64°F
Mostly Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 12mphSW 220°
- Humidity: 69%
- UV index: 6
- Sunrise: 6:56 am PDT
- Sunset: 6:09 pm PDT
- details ▼
- Wednesday
- Oct 21, 2026
- 79°F
- 64°F
PM Showers
- Precip. probability: 46%
- Precipitation: 0"
- Wind: 14mphS 191°
- Humidity: 64%
- UV index: 6
- Sunrise: 6:56 am PDT
- Sunset: 6:08 pm PDT
- details ▼
- Thursday
- Oct 22, 2026
- 72°F
- 59°F
AM Showers
- Precip. probability: 67%
- Precipitation: 0.35"
- Wind: 12mphSW 234°
- Humidity: 68%
- UV index: 6
- Sunrise: 6:57 am PDT
- Sunset: 6:07 pm PDT
- details ▼
- Friday
- Oct 23, 2026
- 73°F
- 59°F
Mostly Sunny
- Precip. probability: 9%
- Precipitation: 0.08"
- Wind: 12mphNW 304°
- Humidity: 63%
- UV index: 6
- Sunrise: 6:58 am PDT
- Sunset: 6:06 pm PDT
- details ▼
- Saturday
- Oct 24, 2026
- 79°F
- 61°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 11mphNW 304°
- Humidity: 53%
- UV index: 6
- Sunrise: 6:59 am PDT
- Sunset: 6:05 pm PDT
- details ▼
- Sunday
- Oct 25, 2026
- 77°F
- 61°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 11mphSW 222°
- Humidity: 53%
- UV index: 5
- Sunrise: 7:00 am PDT
- Sunset: 6:04 pm PDT
- details ▼
- Monday
- Oct 26, 2026
- 75°F
- 59°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 11mphSW 224°
- Humidity: 57%
- UV index: 6
- Sunrise: 7:00 am PDT
- Sunset: 6:03 pm PDT
- details ▼
- Tuesday
- Oct 27, 2026
- 73°F
- 59°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 11mphSW 230°
- Humidity: 58%
- UV index: 5
- Sunrise: 7:01 am PDT
- Sunset: 6:02 pm PDT
- details ▼
During the ten-day period, sunny, dull and rain-filled weather is predicted.
With a 67% probability, rainfall is anticipated only on Thursday. The precipitation will be light at 0.35".
There will be a considerable variation in temperature in the coming days. Forecast highs will fluctuate between 71.6°F and 86°F, while fluctuations in the night’s lowest temperature will be minimal, as night temperatures will lie between 59°F and 64.4°F.
The hottest day is today, with a maximum temperature of 86°F; the coldest day will be Thursday, with a maximum of 71.6°F.
With a 67% probability, rainfall is anticipated only on Thursday. The precipitation will be light at 0.35".
There will be a considerable variation in temperature in the coming days. Forecast highs will fluctuate between 71.6°F and 86°F, while fluctuations in the night’s lowest temperature will be minimal, as night temperatures will lie between 59°F and 64.4°F.
The hottest day is today, with a maximum temperature of 86°F; the coldest day will be Thursday, with a maximum of 71.6°F.
Updated: Oct 18, 2026 @ 09:50:02 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Sunday, in San Ysidro, the forecast calls for abundant sunshine.
Today, the maximum temperature will be 86°F, while the minimum temperature will be 62.6°F.
The highest temperature today will be significantly higher than the average maximum of 75.6°F in October. Today, the lowest temperature will be in line with the average low temperature.
The highest temperature today will be significantly higher than the average maximum of 75.6°F in October. Today, the lowest temperature will be in line with the average low temperature.
On Sunday, in San Ysidro, sunrise will be at 6:54 am and sunset at 6:11 pm (PDT).
Today in San Ysidro, the daylight will last for 11h and 17min.
