Weather forecast for 10 daysEl Cajon, CA

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 86°F
  • 59°F
Cloudy
Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 11mphENE 71°
  • Humidity: 25%
  • UV index: 4
  • Sunrise: 6:53 am PDT
  • Sunset: 6:12 pm PDT
  • ▼
Today, on Saturday, October 17, low-hanging clouds will persist throughout the day.
Dramatic temperature shifts from a high of a humid 86°F to a low of a moderate 59°F are forecasted.
Today, the temperature forecast of 86°F will better match September's climate average than that of October.
Sunrise was at 6:53 am and sunset will be at 6:12 pm; the daylight will last for 11h and 19min.

Sunday Oct 18, 2026

  • 88°F
  • 59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphWNW 285°
  • Humidity: 31%
  • UV index: 6
  • Sunrise: 6:54 am PDT
  • Sunset: 6:11 pm PDT
  • ▼
Tomorrow, on Sunday, uninterrupted sunshine is also anticipated.
Temperature measurements will peak at a hot 87.8°F, with a considerable drop to a low of a mild 59°F.
The predicted high will feel hotter, consistent with September's climate average of 82.6°F.
Sunrise will be at 6:54 am and sunset at 6:11 pm; tomorrow's daylight will last for 11h and 17min.

10-day overview

Daily temperatures

Warmest day: tomorrow 88°C.
Coldest day: Thursday 72°C.

Chance of precipitation

Highest chance: Thursday 70%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 86°F
  • 59°F
Cloudy
Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 11mphENE 71°
  • Humidity: 25%
  • UV index: 4
  • Sunrise: 6:53 am PDT
  • Sunset: 6:12 pm PDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 88°F
  • 59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphWNW 285°
  • Humidity: 31%
  • UV index: 6
  • Sunrise: 6:54 am PDT
  • Sunset: 6:11 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 86°F
  • 59°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 11mphWSW 254°
  • Humidity: 46%
  • UV index: 6
  • Sunrise: 6:55 am PDT
  • Sunset: 6:10 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 84°F
  • 59°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 11mphWSW 251°
  • Humidity: 57%
  • UV index: 6
  • Sunrise: 6:56 am PDT
  • Sunset: 6:09 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 79°F
  • 61°F
Showers
Showers
  • Precip. probability: 37%
  • Precipitation: 0.43"
  • Wind: 13mphSW 219°
  • Humidity: 61%
  • UV index: 6
  • Sunrise: 6:56 am PDT
  • Sunset: 6:08 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 72°F
  • 55°F
Thunderstorms
Thunderstorms
  • Precip. probability: 70%
  • Precipitation: 0.35"
  • Wind: 11mphSW 223°
  • Humidity: 71%
  • UV index: 5
  • Sunrise: 6:57 am PDT
  • Sunset: 6:06 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 75°F
  • 54°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 11mphW 262°
  • Humidity: 66%
  • UV index: 6
  • Sunrise: 6:58 am PDT
  • Sunset: 6:05 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 79°F
  • 55°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 10mphW 274°
  • Humidity: 55%
  • UV index: 6
  • Sunrise: 6:59 am PDT
  • Sunset: 6:04 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 81°F
  • 57°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 10mphWSW 248°
  • Humidity: 53%
  • UV index: 5
  • Sunrise: 7:00 am PDT
  • Sunset: 6:03 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 77°F
  • 55°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 11mphWSW 250°
  • Humidity: 57%
  • UV index: 5
  • Sunrise: 7:00 am PDT
  • Sunset: 6:02 pm PDT
  • ▼
An unsettled pattern is expected over the next ten days, and a mix of dry and sunny, cloud-filled, showery and unstable weather is expected.
Rainfall is anticipated on Wednesday and Thursday.
Temperature differences will be noticeable throughout the forecast window. The temperature is expected to swing from 71.6°F up to 87.8°F, while the minimum temperature is forecast to range between 53.6°F and 60.8°F.
Sunday is expected to be the hottest, reaching up to 87.8°F; the lowest daytime temperature of the period will be reached on Thursday, peaking at 71.6°F.
Updated: Oct 17, 2026 @ 15:14:20 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, the sky will remain cloudy throughout.

Today, the highest temperature will be 86°F, while the lowest temperature will be 59°F.
The maximum temperature will be relatively higher than the average highest temperature of 77.2°F in October. The lowest temperature today will be in line with the average low temperature.

On Saturday, in El Cajon, sunrise was at 6:53 am and sunset will be at 6:12 pm (PDT).

Today, the daylight will last for 11h and 19min.

Tomorrow, clear skies and sunshine are anticipated.

Tomorrow, the highest temperature will be 87.8°F, while the lowest temperature will be 59°F.
The maximum temperature tomorrow will be noticeably higher than the average highest temperature of 77.2°F in October. The lowest temperature tomorrow will be in line with the average low temperature.

On Sunday, in El Cajon, sunrise will be at 6:54 am and sunset at 6:11 pm (PDT).

Tomorrow, the daylight will last for 11h and 17min.