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Castro Valley, CA

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Castro Valley, CA Weather

Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Hourly

10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

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5 PM

72°

RealFeel® 71°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Intermittent clouds

Coastal Flood Advisory

8:00 AM Saturday - 3:00 PM Thursday

RealFeel Shade™70°

WindWNW 9 mph

Air QualityFair

Max UV Index1.0 (Low)

Wind Gusts15 mph

Humidity36%

Indoor Humidity36% (Ideal Humidity)

Dew Point45° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover56%

Visibility10 mi

Cloud Ceiling20000 ft

6 PM

70°

RealFeel® 68°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Partly sunny

Coastal Flood Advisory

8:00 AM Saturday - 3:00 PM Thursday

RealFeel Shade™68°

WindWNW 8 mph

Air QualityFair

Max UV Index0.3 (Low)

Wind Gusts12 mph

Humidity45%

Indoor Humidity45% (Ideal Humidity)

Dew Point48° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

66°

RealFeel® 64°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Partly cloudy

Coastal Flood Advisory

8:00 AM Saturday - 3:00 PM Thursday

WindW 7 mph

Air QualityPoor

Wind Gusts8 mph

Humidity55%

Indoor Humidity52% (Ideal Humidity)

Dew Point50° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

63°

RealFeel® 61°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

0%

Mostly clear

Coastal Flood Advisory

8:00 AM Saturday - 3:00 PM Thursday

WindW 7 mph

Air QualityPoor

Wind Gusts7 mph

Humidity68%

Indoor Humidity56% (Ideal Humidity)

Dew Point52° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

59°

RealFeel® 57°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

0%

Mostly clear

Coastal Flood Advisory

8:00 AM Saturday - 3:00 PM Thursday

WindW 7 mph

Air QualityPoor

Wind Gusts7 mph

Humidity78%

Indoor Humidity56% (Ideal Humidity)

Dew Point52° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover21%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

59°

RealFeel® 57°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

0%

Mostly clear

Coastal Flood Advisory

8:00 AM Saturday - 3:00 PM Thursday

WindW 6 mph

Air QualityPoor

Wind Gusts7 mph

Humidity78%

Indoor Humidity56% (Ideal Humidity)

Dew Point52° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover15%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

58°

RealFeel® 57°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

0%

Mostly clear

Coastal Flood Advisory

8:00 AM Saturday - 3:00 PM Thursday

WindW 6 mph

Air QualityPoor

Wind Gusts7 mph

Humidity79%

Indoor Humidity56% (Ideal Humidity)

Dew Point52° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Castro Valley

AccuWeather's hourly forecast for Castro Valley provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 72° with a RealFeel® of 71°, intermittent clouds with a 0% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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World North America United States California Castro Valley

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