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Bay Area Forecast

Today's Highs/Lows
Concord 89° / 60°
Fairfield 90° / 58°
Fremont 80° / 59°
Hayward 80° / 60°
Livermore 89° / 60°
Moffett Field 80° / 59°
Napa 83° / 56°
Oakland 76° / 60°
Redwood City 79° / 59°
San Francisco 74° / 59°
San Jose 83° / 58°
San Rafael 85° / 55°
Santa Cruz 77° / 58°

Going Somewhere?

Selected Highs/Lows
Arcata 69° / 55°
Bakersfield 92° / 67°
Fresno 94° / 63°
Henderson 101° / 75°
Los Angeles 86° / 66°
Monterey 71° / 59°
Mount Shasta 86° / 48°
Palm Springs 106° / 75°
Redding 99° / 62°
Reno 92° / 56°
Sacramento 94° / 59°
San Diego 80° / 69°
S. Lake Tahoe 82° / 41°
Ukiah 90° / 54°
Yosemite 90° / 59°
Weather

Current Conditions
Update: 7:54 AM

Castro Valley, CA
Partly Cloudy

Partly Cloudy Temperature: 63°
Wind: ENE 4 mph
Dew point:56°
Pressure:29.97 in.
Humidity: 78%
Visibility: 8.0 miles
Observed at: Hayward, CA

Forecast for Castro Valley

clear

Monday

Mainly sunny. High near 80F. Winds W at 10 to 20 mph.

nt_partlycloudy

Monday Night

A few clouds. Low around 60F. Winds WSW at 10 to 15 mph.

partlycloudy

Tuesday

Some clouds in the morning will give way to mainly sunny skies for the afternoon. High near 75F. Winds WSW at 15 to 25 mph.

Bay Area Temps

Updated: 11:14 AM EDT on August 31, 2015
Fairfield
66°
Half Moon Bay
63°
Hayward
63°
Livermore
64°
Moffett Field
65°
Napa
60°
Novato
57°
Oakland
65°
Richmond
65°
San Francisco
63°
San Jose
62°
Santa Rosa
58°
Walnut Creek
66°
Map


World Weather Search

Enter any City, State or ZIP Code, or Airport Code or Country

5 Day Forecast for ZIP Code 94546

Monday Tuesday Wednesday Thursday Friday
Clear
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Clear
High: 80°
Low: 60°
Detail | Almanac
Partly Cloudy
High: 75°
Low: 60°
Detail | Almanac
Partly Cloudy
High: 73°
Low: 58°
Detail | Almanac
Partly Cloudy
High: 74°
Low: 57°
Detail | Almanac
Partly Cloudy
High: 75°
Low: 56°
Detail | Almanac

Extended forecast for Castro Valley

nt_partlycloudy Tuesday Night

Partly cloudy. Low around 60F. Winds W at 10 to 20 mph.

partlycloudy Wednesday

Some clouds in the morning will give way to mainly sunny skies for the afternoon. High 73F. Winds W at 15 to 25 mph.

nt_clear Wednesday Night

Mostly clear. Low 58F. Winds WSW at 10 to 20 mph.

partlycloudy Thursday

Some clouds in the morning will give way to mainly sunny skies for the afternoon. High 74F. Winds W at 10 to 20 mph.

nt_clear Thursday Night

Mostly clear. Low 57F. Winds SW at 10 to 20 mph.

partlycloudy Friday

Some clouds in the morning will give way to mainly sunny skies for the afternoon. High around 75F. Winds W at 15 to 25 mph.

nt_clear Friday Night

Clear. Low 56F. Winds WSW at 10 to 20 mph.

clear Saturday

Sunny. High 82F. Winds NNW at 10 to 20 mph.

nt_clear Saturday Night

A mostly clear sky. Low around 60F. Winds NW at 10 to 15 mph.

clear Sunday

Sunny. High 87F. Winds NNW at 10 to 20 mph.

nt_clear Sunday Night

A mostly clear sky. Low 62F. Winds NW at 10 to 15 mph.

clear Monday

Sunny. High 86F. Winds NW at 10 to 20 mph.

nt_clear Monday Night

A mostly clear sky. Low near 60F. Winds WNW at 10 to 15 mph.

clear Tuesday

Sunny. High 81F. Winds WNW at 10 to 20 mph.

nt_clear Tuesday Night

Mainly clear early, then a few clouds later on. Low around 60F. Winds W at 10 to 15 mph.

clear Wednesday

Sunny skies. High 78F. Winds W at 10 to 20 mph.

nt_clear Wednesday Night

A mostly clear sky. Low 59F. Winds W at 10 to 15 mph.

clear Thursday

Mainly sunny. High 79F. Winds W at 10 to 20 mph.

nt_clear Thursday Night

Clear skies. Low around 60F. Winds WNW at 10 to 15 mph.

Almanac

Key: T = Trace of precipitation
MM = data not available

August 31, 2015
Normal high: 77°
Record high: 90° (2005)
 
Normal low: 58°
Record low: 55° (1999)
 

Complete weather almanac

Astronomy

Sunrise: 06:37 AM (PDT)
Moon Rise: 09:03 PM (PDT)
 
Sunset: 07:39 PM (PDT)
Moon Set: 08:50 AM (PDT)
Moon Phase
 
Aug. 31 Sep. 05 Sep. 13 Sep. 21 Sep. 28

Air Pollution Forecast for Oakland

  Air Quality AQ Index Pollutant
YesterdayGoodOZONE
YesterdayGoodPM2.5
CurrentGoodPM2.5
CurrentGoodOZONE
MonGood OZONE
TueGood OZONE
WedGood OZONE

Bay Area Conditions

  Yesterday Today Conditions
  High Low High Low  
Antioch 86° 63° 89° 60° Clear
Benicia 86° 63° 89° 60° Clear
Berkeley 79° 61° 76° 60° Partly Cloudy
Brentwood 84° 64° 89° 60° Clear
Concord 86° 63° 89° 60° Clear
Fairfield 86° 59° 90° 58° Clear
Fremont 82° 61° 80° 59° Clear
Half Moon Bay 70° 63° 68° 59° Overcast
Hayward 75° 63° 80° 60° Partly Cloudy
Livermore 84° 64° 89° 60° Clear
Moffett Field 79° 61° 80° 59° Clear
Napa 82° 57° 83° 56° Clear
Novato 81° 59° 85° 55° Clear
Oakland 79° 61° 76° 60° Partly Cloudy
Richmond 79° 61° 76° 60° Partly Cloudy
Redwood City 77° 64° 79° 59° Clear
San Francisco 73° 63° 74° 59° Partly Cloudy
San Jose 79° 63° 83° 58° Clear
San Mateo 73° 63° 74° 59° Partly Cloudy
San Rafael 81° 59° 85° 55° Clear
San Ramon 84° 64° 89° 60° Clear
Santa Rosa 90° 52° 89° 55° Partly Cloudy
Santa Cruz 82° 55° 77° 58° Fog
Tracy 90° 61° 94° 58° Clear
Vacaville 90° 54° 94° 58° Clear
Walnut Creek 86° 63° 89° 60° Clear
Arcata 72° 54° 69° 55° Clear
Bakersfield 88° 70° 92° 67° Clear
Fresno 90° 66° 94° 63° Partly Cloudy
Henderson 101° 83° 101° 75° Clear
Los Angeles 90° 72° 86° 66° Overcast
Monterey 72° 55° 71° 59° Overcast
Mount Shasta 79° 41° 86° 48° Clear
Palm Springs 109° 82° 106° 75° Clear
Redding 90° 57° 99° 62° Clear
Reno 84° 55° 92° 56° Clear
Sacramento 90° 57° 94° 59° Clear
San Diego 81° 70° 80° 69° Overcast
South Lake Tahoe 75° 45° 82° 41° Clear
Ukiah 82° 57° 90° 54° Clear
Yosemite National Park 88° 55° 90° 59° Clear
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