Weather forecast for todayCastro Valley, CA

Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND

Weather forecast for today

Current condition 12:09 am PST

  • 52°F
  • Feels like:
    52°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 4mphNE 50°
  • Humidity: 77%
  • Dewpoint: 45°F
  • Pressure: 30.02"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
In Castro Valley, at the moment, a bright and clear sky dominates the horizon.
The temperature is a cool 51.8°F. The current temperature is almost at the minimum-anticipated 50°F for today.

Saturday Oct 24, 2026

  • 73°F
  • 50°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 9mphNNW 337°
  • Humidity: 49%
  • UV index: 4
  • Sunrise: 7:25 am PDT
  • Sunset: 6:19 pm PDT
  • ▼
Today, a sun-drenched sky is anticipated.
The highest temperature will be a temperate 73.4°F, while the lowest forecasted temperature is a cool 50°F.
Expect temperatures to reach October's average high of 72.5°F.
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 period: 2 pm - 5 pm 70°C.
Coldest period: 5 am - 8 am 50°C.

Chance of precipitation

Highest chance: 11 pm 5%.

Hourly weather forecast

  • 2 am
  • 52°F
  • Feels like:
    50°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphENE 59°
  • Humidity: 75%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 50°F
  • Feels like:
    48°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphE 84°
  • Humidity: 72%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 50°F
  • Feels like:
    48°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphENE 62°
  • Humidity: 68%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:25 am
  • 8 am
  • 50°F
  • Feels like:
    48°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphENE 59°
  • Humidity: 66%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 61°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNNE 29°
  • Humidity: 53%
  • 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: 5mphNW 323°
  • Humidity: 45%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 70°F
  • Feels like:
    70°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphWNW 300°
  • Humidity: 38%
  • 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: 9mphWNW 302°
  • Humidity: 39%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 68°F
  • Feels like:
    68°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphNW 305°
  • Humidity: 47%
  • 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: 4mphNW 318°
  • Humidity: 65%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 59°F
  • Feels like:
    59°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 2mphNW 326°
  • Humidity: 71%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, sunshine is expected.
The temperature will be between a maximum of 71.6°F and a minimum of 48.2°F. The warmest part of the day will be at 3 pm and 4 pm.
Today, the high temperature will be in line with October's average. The nighttime low will be also a few degrees lower than the typical October minimum temperature of 54.3°F.
Updated: Oct 24, 2026 @ 08:09:02 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (12:09 am PST) it is 51.8°F in Castro Valley.

On Saturday, bright and sunny weather is expected.

Today, the highest temperature will be 73.4°F, while the lowest temperature will be 50°F.
Today, the maximum temperature will be in line with the average highest temperature in October. The lowest temperature will be a few degrees lower than the average low of 54.3°F.

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

Today, the daylight will last for 10h and 53min.
Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND

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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: 1:09am PST
  • Sunrise: 7:25 am PST
  • Sunset: 6:19 pm PST
  • Timezone: America/Los_Angeles

Nearby Castro Valley, California, USA

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