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Bay Area Forecast

Today's Highs/Lows
Concord 75° / 48°
Fairfield 76° / 48°
Fremont 66° / 50°
Hayward 66° / 50°
Livermore 73° / 48°
Moffett Field 69° / 49°
Napa 70° / 46°
Oakland 66° / 49°
Redwood City 66° / 49°
San Francisco 62° / 49°
San Jose 70° / 47°
San Rafael 70° / 44°
Santa Cruz 65° / 48°

Going Somewhere?

Selected Highs/Lows
Arcata 56° / 43°
Bakersfield 84° / 56°
Fresno 84° / 51°
Henderson 85° / 62°
Los Angeles 67° / 56°
Monterey 60° / 50°
Mount Shasta 69° / 35°
Palm Springs 89° / 62°
Redding 86° / 56°
Reno 77° / 43°
Sacramento 81° / 50°
San Diego 69° / 59°
S. Lake Tahoe 66° / 33°
Ukiah 76° / 44°
Yosemite 72° / 48°
Weather

Current Conditions
Update: 4:01 AM

Castro Valley, CA
Mostly Cloudy

Mostly Cloudy Temperature: 54°
Wind: SSW 8 mph
Dew point:46°
Pressure:29.96 in.
Humidity: 77%
Visibility: 10.0 miles
Observed at: Hayward, CA

Forecast for Castro Valley

clear

Tuesday

A few passing clouds, otherwise generally sunny. Low clouds and fog lingering along the coast. High 66F. Winds WSW at 10 to 20 mph.

nt_partlycloudy

Tuesday Night

Partly cloudy. Low clouds and fog developing along the coast. Low around 50F. Winds SW at 10 to 20 mph.

partlycloudy

Wednesday

Some clouds in the morning will give way to mainly sunny skies for the afternoon. Low clouds and fog lingering along the coast. High 67F. Winds WSW at 10 to 20 mph.

Bay Area Temps

Updated: 7:14 AM EDT on May 05, 2015
Fairfield
52°
Half Moon Bay
52°
Hayward
54°
Livermore
50°
Moffett Field
51°
Napa
49°
Novato
41°
Oakland
53°
Richmond
53°
San Francisco
52°
San Jose
51°
Santa Rosa
43°
Walnut Creek
53°
Map


World Weather Search

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

5 Day Forecast for ZIP Code 94546

Tuesday Wednesday Thursday Friday Saturday
Clear
Partly Cloudy
Clear
Clear
Clear
Clear
High: 66°
Low: 50°
Detail | Almanac
Partly Cloudy
High: 67°
Low: 49°
Detail | Almanac
Clear
High: 69°
Low: 52°
Detail | Almanac
Clear
High: 71°
Low: 51°
Detail | Almanac
Clear
High: 70°
Low: 53°
Detail | Almanac

Extended forecast for Castro Valley

nt_clear Wednesday Night

A mostly clear sky. Low clouds and fog developing along the coast. Low 49F. Winds WSW at 10 to 20 mph.

clear Thursday

Sun and a few passing clouds. Low clouds and fog lingering along the coast. High 69F. Winds W at 10 to 20 mph.

nt_clear Thursday Night

Clear skies. Low 52F. Winds SW at 10 to 15 mph.

clear Friday

Sunny. High 71F. Winds W at 10 to 20 mph.

nt_clear Friday Night

A mostly clear sky. Low 51F. Winds WSW at 10 to 20 mph.

clear Saturday

A mainly sunny sky. High around 70F. Winds WSW at 10 to 20 mph.

nt_partlycloudy Saturday Night

Partly cloudy. Low 53F. Winds W at 10 to 15 mph.

partlycloudy Sunday

Some clouds in the morning will give way to mainly sunny skies for the afternoon. High around 70F. Winds W at 10 to 20 mph.

nt_clear Sunday Night

Mostly clear. Low 52F. Winds WSW at 10 to 15 mph.

clear Monday

A few passing clouds, otherwise generally sunny. High near 70F. Winds W at 10 to 20 mph.

nt_partlycloudy Monday Night

A few clouds from time to time. Low 51F. Winds WSW at 10 to 20 mph.

clear Tuesday

Sunny. High around 70F. Winds WSW at 10 to 20 mph.

nt_clear Tuesday Night

A few clouds overnight. Low 51F. Winds W at 10 to 20 mph.

clear Wednesday

Mostly sunny. High 69F. Winds W at 10 to 20 mph.

nt_partlycloudy Wednesday Night

Partly cloudy early with increasing clouds overnight. Low 52F. Winds WSW at 10 to 15 mph.

partlycloudy Thursday

Some clouds in the morning will give way to mainly sunny skies for the afternoon. High 68F. Winds W at 10 to 20 mph.

nt_chancerain Thursday Night

Partly cloudy skies early giving way to a few showers after midnight. Low 52F. Winds WSW at 10 to 15 mph. Chance of rain 30%.

partlycloudy Friday

Partly cloudy. High 71F. Winds WSW at 10 to 20 mph.

nt_clear Friday Night

Clear skies. Low 53F. Winds WSW at 10 to 15 mph.

Almanac

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

May 5, 2015
Normal high: 68°
Record high: 86° (2011)
 
Normal low: 52°
Record low: 46° (1999)
 

Complete weather almanac

Astronomy

Sunrise: 06:08 AM (PDT)
Moon Rise: 09:44 PM (PDT)
 
Sunset: 08:02 PM (PDT)
Moon Set: 07:23 AM (PDT)
Moon Phase
 
May. 05 May. 11 May. 18 May. 25 Jun. 02

Air Pollution Forecast for Oakland

  Air Quality AQ Index Pollutant
YesterdayGoodOZONE
YesterdayGoodPM2.5
CurrentGoodPM2.5
CurrentGoodOZONE
TueGood OZONE
WedGood OZONE
ThuGood OZONE
FriGood OZONE
SatGood OZONE

Bay Area Conditions

  Yesterday Today Conditions
  High Low High Low  
Antioch 70° 52° 75° 48° Clear
Benicia 70° 52° 75° 48° Clear
Berkeley 59° 51° 66° 49° Mostly Cloudy
Brentwood 70° 52° 73° 48° Clear
Concord 70° 52° 75° 48° Clear
Fairfield 70° 50° 76° 48° Clear
Fremont 61° 52° 66° 50° Mostly Cloudy
Half Moon Bay 55° 50° 58° 47° Overcast
Hayward 61° 52° 66° 50° Mostly Cloudy
Livermore 70° 52° 73° 48° Clear
Moffett Field 64° 53° 69° 49° Clear
Napa 63° 48° 70° 46° Overcast
Novato 64° 45° 70° 44° Mostly Cloudy
Oakland 59° 51° 66° 49° Mostly Cloudy
Richmond 59° 51° 66° 49° Mostly Cloudy
Redwood City 68° 50° 66° 49° Clear
San Francisco 61° 52° 62° 49° Mostly Cloudy
San Jose 64° 52° 70° 47° Clear
San Mateo 61° 52° 62° 49° Mostly Cloudy
San Rafael 64° 45° 70° 44° Mostly Cloudy
San Ramon 70° 52° 73° 48° Clear
Santa Rosa 68° 45° 76° 46° Mostly Cloudy
Santa Cruz 63° 50° 65° 48° Overcast
Tracy 79° 48° 80° 49° Clear
Vacaville 79° 46° 80° 49° Clear
Walnut Creek 70° 52° 75° 48° Clear
Arcata 57° 48° 56° 43° Mostly Cloudy
Bakersfield 84° 55° 84° 56° Clear
Fresno 83° 54° 84° 51° Clear
Henderson 81° 66° 85° 62° Clear
Los Angeles 70° 55° 67° 56° Overcast
Monterey 57° 54° 60° 50° Overcast
Mount Shasta 79° 43° 69° 35° Clear
Palm Springs 90° 66° 89° 62° Clear
Redding 85° 55° 86° 56° Clear
Reno 79° 48° 77° 43° Clear
Sacramento 73° 50° 81° 50° Clear
San Diego 68° 61° 69° 59° Overcast
South Lake Tahoe 66° 36° 66° 33° Clear
Ukiah 81° 50° 76° 44° Clear
Yosemite National Park 79° 54° 72° 48° Clear
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