Weather forecast for 10 daysAltadena, CA

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 84°F
  • 63°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSSE 162°
  • Humidity: 23%
  • UV index: 5
  • Sunrise: 6:59 am PDT
  • Sunset: 6:15 pm PDT
  • ▼
On Saturday, October 17, expect continuous cloudiness with subdued daylight.
The maximum anticipated temperature is a warm 84.2°F, while the minimum temperature will be an enjoyable 62.6°F.
This October day will feature hotter weather, consistent with September's average of 84.6°F.
Sunrise was at 6:59 am and sunset will be at 6:15 pm; the daylight will last for 11h and 16min.

Sunday Oct 18, 2026

  • 84°F
  • 61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphS 191°
  • Humidity: 28%
  • UV index: 6
  • Sunrise: 7:00 am PDT
  • Sunset: 6:14 pm PDT
  • ▼
Tomorrow, on Sunday, October 18, sunny conditions are expected to continue.
The maximum temperature will be a warm 84.2°F, while the minimum forecasted temperature is a breezy 60.8°F.
The forecast high of 84.2°F aligns more closely with September's typical high of 84.6°F than with October's usual 76.8°F.
Sunrise will be at 7:00 am and sunset at 6:14 pm; tomorrow's daylight will last for 11h and 14min.

10-day overview

Daily temperatures

Warmest period: today - tomorrow 84°C.
Coldest day: Thursday 64°C.

Chance of precipitation

Highest chance: Thursday 81%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 84°F
  • 63°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSSE 162°
  • Humidity: 23%
  • UV index: 5
  • Sunrise: 6:59 am PDT
  • Sunset: 6:15 pm PDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 84°F
  • 61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphS 191°
  • Humidity: 28%
  • UV index: 6
  • Sunrise: 7:00 am PDT
  • Sunset: 6:14 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 81°F
  • 59°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphS 171°
  • Humidity: 39%
  • UV index: 6
  • Sunrise: 7:01 am PDT
  • Sunset: 6:13 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 77°F
  • 59°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 8mphSSE 164°
  • Humidity: 48%
  • UV index: 6
  • Sunrise: 7:02 am PDT
  • Sunset: 6:12 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 70°F
  • 55°F
Rain
Rain
  • Precip. probability: 64%
  • Precipitation: 0.75"
  • Wind: 7mphSSE 148°
  • Humidity: 64%
  • UV index: 4
  • Sunrise: 7:02 am PDT
  • Sunset: 6:11 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 64°F
  • 54°F
Thundershowers
Thundershowers
  • Precip. probability: 81%
  • Precipitation: 0.24"
  • Wind: 7mphSSE 155°
  • Humidity: 79%
  • UV index: 4
  • Sunrise: 7:03 am PDT
  • Sunset: 6:10 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 70°F
  • 54°F
Sunny
Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 6mphS 173°
  • Humidity: 65%
  • UV index: 5
  • Sunrise: 7:04 am PDT
  • Sunset: 6:08 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 75°F
  • 57°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphSSE 152°
  • Humidity: 51%
  • UV index: 5
  • Sunrise: 7:05 am PDT
  • Sunset: 6:07 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 75°F
  • 55°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0.04"
  • Wind: 7mphSSE 151°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:06 am PDT
  • Sunset: 6:06 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 72°F
  • 54°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 7mphSSE 151°
  • Humidity: 53%
  • UV index: 5
  • Sunrise: 7:07 am PDT
  • Sunset: 6:05 pm PDT
  • ▼
Weather fluctuations are likely over the next ten days, and a mix of mostly clear, gloomy, rain-soaked and lightning-active weather is anticipated.
Rain is anticipated on Wednesday, Thursday and next Sunday.
Temperature differences will be noticeable in the coming days. The temperature is expected to swing from 64.4°F up to 84.2°F, while the minimum temperature is forecast to range between 53.6°F and 62.6°F.
The hottest days in Altadena will be Saturday and Sunday, with a maximum of 84.2°F; the coldest day will be Thursday, with a maximum of 64.4°F.
Updated: Oct 17, 2026 @ 15:35:59 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, the sky will remain mostly closed off by clouds.

Today, the maximum temperature will be 84.2°F, while the minimum temperature will be 62.6°F.
Today, the maximum temperature will be relatively higher than the average highest temperature in October. The lowest temperature will be also moderately higher than the average low of 57.9°F.

On Saturday, in Altadena, sunrise was at 6:59 am and sunset will be at 6:15 pm (PDT).

Today, the daylight will last for 11h and 16min.

On Sunday, in Altadena, the forecast calls for abundant sunshine.

Tomorrow, the highest temperature will be 84.2°F, while the lowest temperature will be 60.8°F.
Tomorrow, the highest temperature will be slightly warmer than the average maximum temperature in October. The lowest temperature tomorrow will be in line with the average low temperature.

On Sunday, in Altadena, sunrise will be at 7:00 am and sunset at 6:14 pm (PDT).

Tomorrow, the daylight will last for 11h and 14min.