Weather forecast for 10 days
Altadena, CA

Weather forecast for the weekend

Saturday, May 10.

Mostly Sunny
5:52 am

7:45 pm
PDT
Mostly Sunny
95°F / 66°F
  • Wind: 8mph SSW
  • Humidity: 17%
  • Precip. probability: 0%
  • Precipitation: 0"
  • UV index: 10
Today, in Altadena, predominantly sunny weather will make for pleasant outdoor conditions.
A considerable disparity in temperature is forecasted, reaching up to a maximum of a torrid 95°F and falling to a minimum of an enjoyable 66.2°F.
Today, the forecasted high will be higher and closer to June's typical value of 79.9°F than May's 73.2°F.
Sunrise was at 5:52 am and sunset will be at 7:45 pm; the daylight will last for 13h and 53min.

Sunday, May 11.

Partly Cloudy
5:51 am

7:45 pm
PDT
Partly Cloudy
88°F / 57°F
  • Wind: 9mph S
  • Humidity: 26%
  • Precip. probability: 0%
  • Precipitation: 0"
  • UV index: 10
Tomorrow, a partly cloudy sky is also anticipated.
A stark contrast will be observed between the day's peak temperature of a blazing 87.8°F and the night's low of a moderate 57.2°F.
The expected high is higher and consistent with June's normal of 79.9°F rather than May's.
Sunrise will be at 5:51 am and sunset at 7:45 pm; tomorrow's daylight will last for 13h and 54min.

Frequently asked questions

What is the weather forecast for Altadena for tomorrow?
On Sunday, expect a mix of sun and clouds throughout the day.
What will be the highest temperature tomorrow?
Tomorrow, the maximum temperature will be 87.8°F, while the minimum temperature will be 57.2°F.
The highest temperature tomorrow will be uncommonly higher than the average maximum of 73.2°F in May. Tomorrow, the lowest temperature will be a couple of degrees higher than the average low temperature.
When are sunrise and sunset tomorrow?
On Sunday, in Altadena, sunrise will be at 5:51 am and sunset at 7:45 pm (PDT).
How many hours of daylight will Altadena have tomorrow?
Tomorrow, the daylight will last for 13h and 54min.
What is the weather forecast for Altadena for the next ten days?
In Altadena, a combination of cloudy and sunny weather is anticipated for the next ten days.
How hot will it be in the next ten days?
The maximum temperature will range between 66.2°F and 95°F, as the minimum temperature will range between 50°F and 66.2°F.
What will be the hottest and the coldest days?
Today is the hottest day, with a maximum temperature of 95°F. The coldest day will be Tuesday, with a maximum of 66.2°F.

Long-term weather forecast

SatMay 10.
  • 95°F
  • 66°F
Mostly Sunny
Mostly Sunny
  • Wind: 8mph SSW
  • Humidity: 17%
  • UV index: 10
  • Precip. probability: 0%
  • Precipitation: 0"
  • 5:52 am 7:45 pm PDT
SunMay 11.
  • 88°F
  • 57°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph S
  • Humidity: 26%
  • UV index: 10
  • Precip. probability: 0%
  • Precipitation: 0"
  • 5:51 am 7:45 pm PDT
MonMay 12.
  • 72°F
  • 50°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Wind: 11mph SSE
  • Humidity: 53%
  • UV index: 9
  • Precip. probability: 3%
  • Precipitation: 0"
  • 5:51 am 7:46 pm PDT
TueMay 13.
  • 66°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph SSW
  • Humidity: 55%
  • UV index: 10
  • Precip. probability: 13%
  • Precipitation: 0"
  • 5:50 am 7:47 pm PDT
WedMay 14.
  • 72°F
  • 54°F
Sunny
Sunny
  • Wind: 8mph SSW
  • Humidity: 46%
  • UV index: 10
  • Precip. probability: 1%
  • Precipitation: 0"
  • 5:49 am 7:48 pm PDT
ThuMay 15.
  • 75°F
  • 54°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph S
  • Humidity: 46%
  • UV index: 10
  • Precip. probability: 1%
  • Precipitation: 0"
  • 5:48 am 7:49 pm PDT
FriMay 16.
  • 72°F
  • 54°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph S
  • Humidity: 57%
  • UV index: 10
  • Precip. probability: 2%
  • Precipitation: 0"
  • 5:48 am 7:49 pm PDT
SatMay 17.
  • 72°F
  • 55°F
Mostly Sunny
Mostly Sunny
  • Wind: 7mph S
  • Humidity: 59%
  • UV index: 10
  • Precip. probability: 3%
  • Precipitation: 0"
  • 5:47 am 7:50 pm PDT
SunMay 18.
  • 73°F
  • 57°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph S
  • Humidity: 56%
  • UV index: 10
  • Precip. probability: 9%
  • Precipitation: 0"
  • 5:46 am 7:51 pm PDT
MonMay 19.
  • 77°F
  • 59°F
Sunny
Sunny
  • Wind: 7mph SSW
  • Humidity: 45%
  • UV index: 10
  • Precip. probability: 1%
  • Precipitation: 0"
  • 5:46 am 7:52 pm PDT
Forecasts for the ten-day outlook show that a combination of cloudy and sunny weather is anticipated.
Rainfall is not predicted in Altadena in the upcoming period.
Expect a substantial fluctuation in daytime highs over the next several days. Highs will range from 66.2°F to 95°F, while the lowest night temperatures will vary also significantly, as nighttime lows are forecast to fall between 50°F and 66.2°F.
The hottest day is today, with a maximum temperature of 95°F; the lowest daytime temperature of the period will be reached on Tuesday, peaking at 66.2°F.
Updated: May 10, 2025 @ 17:59:07 UTC
Published by: Weather U.S. | About Us
Data Sources | |
Weather Forecasting & Climate
Share