National Weather Service forecast

Castro Valley, California Weather

49°Overnight: Mostly Clear
Wind NE 6 mph
7-DayHourlyRadar

Castro Valley 7-Day Forecast

  1. Overnight
    49°F
    Mostly Clear

    Mostly clear. Low around 49, with temperatures rising to around 51 overnight. Northeast wind around 6 mph.

  2. Wednesday
    66°F
    Sunny
    2% chance of precipitation

    Sunny. High near 66, with temperatures falling to around 62 in the afternoon. North northwest wind 3 to 7 mph.

  3. Wednesday Night
    49°F
    Mostly Cloudy
    2% chance of precipitation

    Mostly cloudy, with a low around 49. South wind 0 to 3 mph.

  4. Thursday
    70°F
    Mostly Sunny

    Mostly sunny, with a high near 70. North wind 1 to 5 mph.

  5. Thursday Night
    49°F
    Mostly Clear

    Mostly clear, with a low around 49. West northwest wind around 2 mph.

  6. Friday
    72°F
    Sunny

    Sunny, with a high near 72.

  7. Friday Night
    50°F
    Mostly Clear

    Mostly clear, with a low around 50.

  8. Saturday
    74°F
    Sunny

    Sunny, with a high near 74.

  9. Saturday Night
    51°F
    Mostly Clear

    Mostly clear, with a low around 51.

  10. Sunday
    73°F
    Mostly Sunny

    Mostly sunny, with a high near 73.

  11. Sunday Night
    52°F
    Partly Cloudy

    Partly cloudy, with a low around 52.

  12. Monday
    71°F
    Partly Sunny
    2% chance of precipitation

    Partly sunny, with a high near 71.

  13. Monday Night
    52°F
    Partly Cloudy
    2% chance of precipitation

    Partly cloudy, with a low around 52.

  14. Tuesday
    71°F
    Mostly Sunny
    5% chance of precipitation

    Mostly sunny, with a high near 71.

Issued by the National Weather Service (MTR office), updated .

Castro Valley Hourly Forecast

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Full 100+ hour forecast for Castro Valley

Castro Valley Weather Radar

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About Castro Valley

Population (2020 Census)
66,441
Coordinates
37.708, -122.063
Elevation
397 ft
NWS forecast office
MTR
Time zone
America/Los Angeles
Sunrise today
6:36 AM PST
Sunset today
5:07 PM PST
Daylight today
10 h 30 min

Castro Valley Weather Questions

What is the weather forecast for Castro Valley, California?

Overnight: Mostly clear. Low around 49, with temperatures rising to around 51 overnight. Northeast wind around 6 mph. Wednesday: Sunny. High near 66, with temperatures falling to around 62 in the afternoon. North northwest wind 3 to 7 mph.

Will it rain or snow in Castro Valley this week?

Not much. The highest chance of precipitation in the 7-day forecast is 5%, Tuesday.

How warm and how cold will it get in Castro Valley this week?

The warmest day is Saturday, with a high near 74°F. The coldest night is Overnight, with a low near 49°F.

What time are sunrise and sunset in Castro Valley today?

Sunrise is at 6:36 AM PST and sunset is at 5:07 PM PST, for 10 h 30 min of daylight.

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