Weather forecast for todayCastro Valley, CA

Weather forecast for today

Current condition 4:33 am PDT

  • 48°F
  • Feels like:
    46°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 4mphE 80°
  • Humidity: 78%
  • Dewpoint: 43°F
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
At the moment, skies are clear and bright, offering ideal outdoor conditions.
The temperature is a brisk 48.2°F, the real-feel temperature is nearly identical at 46.4°F. The current temperature is at its lowest of the day.

Saturday Oct 24, 2026

  • 73°F
  • 48°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 9mphN 3°
  • Humidity: 54%
  • UV index: 4
  • Sunrise: 7:25 am PDT
  • Sunset: 6:19 pm PDT
  • ▼
Today, on Saturday, October 24, clear skies and sunshine are anticipated.
The temperature is predicted to vary between a maximum of a moderately hot 73.4°F and a minimum of a frosty 48.2°F.
October's typical peak of 72.5°F is anticipated to be mirrored in the day’s high.
Sunrise will be at 7:25 am and sunset at 6:19 pm; the daylight will last for 10h and 53min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 72°C.
Coldest period: 5 am - 7 am 48°C.

Chance of precipitation

Highest chance: 11 pm 5%.

Hourly weather forecast

  • 6 am
  • 48°F
  • Feels like:
    46°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphENE 68°
  • Humidity: 77%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:25 am
  • 8 am
  • 48°F
  • Feels like:
    48°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphENE 65°
  • Humidity: 68%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 59°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphNNE 20°
  • Humidity: 52%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 66°F
  • Feels like:
    66°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphN 351°
  • Humidity: 43%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 70°F
  • Feels like:
    70°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNNW 332°
  • Humidity: 36%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 72°F
  • Feels like:
    72°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphNW 311°
  • Humidity: 36%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 66°F
  • Feels like:
    66°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNW 306°
  • Humidity: 46%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:19 pm
  • 8 pm
  • 61°F
  • Feels like:
    61°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 3mphNW 318°
  • Humidity: 65%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 57°F
  • Feels like:
    57°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 2mphNNW 334°
  • Humidity: 72%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, in Castro Valley, mainly sunny weather and a cloudless sky are anticipated.
The temperature will vary between the lowest temperature of 48.2°F and the highest temperature of 71.6°F. The warmest part of the day will be at 3 pm and 4 pm.
The highest temperature will be similar to October's average maximum of 72.5°F. The minimum temperature today will be more consistent with November's average low of 48.2°F than October's average of 54.3°F.
Updated: Oct 24, 2026 @ 11:33:19 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (3:33 am PST) it is 48.2°F in Castro Valley.

Today, sun-filled conditions are expected to persist.

Today, the maximum temperature will be 73.4°F, while the minimum temperature will be 48.2°F.
The highest temperature today will be in line with the average maximum temperature in October. The lowest temperature today will be slightly cooler than the average low temperature.

On Saturday, in Castro Valley, sunrise will be at 7:25 am and sunset at 6:19 pm (PDT).

In Castro Valley, today, there will be 10h and 53min of daylight.

Castro Valley, California, USA

  • en: Castro Valley, California, USA
  • es: Castro Valley, California, EE.UU.
  • hr: Kastro Vali, Kalifornija, SAD
  • mk: Kastro Vali, Kalifornija, SAD
  • sr: Kastro Vali, Kalifornija, SAD
  • zh: 卡斯特罗谷, 加利福尼亚州, 美国
  • Latitude: 37.694097°
  • Longitude: -122.086352°
  • Elevation: 161 ft
  • Current time: 4:58am PDT
  • Sunrise: 7:25 am PDT
  • Sunset: 6:19 pm PDT
  • Timezone: America/Los_Angeles

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