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Bay Area Forecast

Today's Highs/Lows
Concord 78° / 55°
Fairfield 82° / 53°
Fremont 71° / 55°
Hayward 71° / 55°
Livermore 80° / 57°
Moffett Field 77° / 56°
Napa 77° / 53°
Oakland 69° / 54°
Redwood City 77° / 56°
San Francisco 70° / 54°
San Jose 78° / 56°
San Rafael 77° / 51°
Santa Cruz 76° / 53°

Going Somewhere?

Selected Highs/Lows
Arcata 66° / 54°
Bakersfield 96° / 68°
Fresno 97° / 63°
Henderson 97° / 72°
Los Angeles 81° / 62°
Monterey 69° / 53°
Mount Shasta 85° / 54°
Palm Springs 102° / 74°
Redding 97° / 65°
Reno 87° / 54°
Sacramento 89° / 55°
San Diego 72° / 61°
S. Lake Tahoe 78° / 44°
Ukiah 87° / 55°
Yosemite 85° / 60°
Weather

Current Conditions
Update: 11:54 PM

Castro Valley, CA
Overcast

Overcast Temperature: 54°
Wind: West 10 mph
Dew point:51°
Pressure:30.04 in.
Humidity: 90%
Visibility: 10.0 miles
Observed at: Hayward, CA

Forecast for Castro Valley

mostlycloudy

Friday

Areas of fog early, then partly cloudy in the afternoon. High 71F. Winds WNW at 10 to 20 mph.

nt_clear

Friday Night

Partly cloudy skies early, then becoming foggy and damp later at night. Low near 55F. Winds W at 10 to 15 mph.

mostlycloudy

Saturday

Foggy early, then partly cloudy later in the day. High 73F. Winds WNW at 10 to 15 mph.

Bay Area Temps

Updated: 3:54 AM EDT on May 29, 2015
Fairfield
54°
Half Moon Bay
53°
Hayward
54°
Livermore
54°
Moffett Field
57°
Napa
52°
Novato
50°
Oakland
53°
Richmond
53°
San Francisco
53°
San Jose
56°
Santa Rosa
50°
Walnut Creek
55°
Map


World Weather Search

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

5 Day Forecast for ZIP Code 94546

Friday Saturday Sunday Monday Tuesday
Fog
Fog
Partly Cloudy
Partly Cloudy
Partly Cloudy
Fog
High: 71°
Low: 55°
Detail | Almanac
Fog
High: 73°
Low: 54°
Detail | Almanac
Partly Cloudy
High: 68°
Low: 57°
Detail | Almanac
Partly Cloudy
High: 67°
Low: 55°
Detail | Almanac
Partly Cloudy
High: 70°
Low: 54°
Detail | Almanac

Extended forecast for Castro Valley

nt_clear Saturday Night

Partly cloudy skies early will give way to considerable cloudiness and fog after midnight. Low 54F. Winds WNW at 10 to 15 mph.

partlycloudy Sunday

Cloudy skies early, then partly cloudy in the afternoon. High 68F. Winds WNW at 10 to 20 mph.

nt_mostlycloudy Sunday Night

Partly cloudy skies during the evening will give way to cloudy skies overnight. Low 57F. Winds W at 10 to 15 mph.

partlycloudy Monday

Morning clouds will give way to sunshine for the afternoon. High 67F. Winds WNW at 10 to 20 mph.

nt_clear Monday Night

Clear skies early, then becoming foggy and damp later at night. Low around 55F. Winds WNW at 10 to 20 mph.

partlycloudy Tuesday

Cloudy early, becoming mostly sunny in the afternoon. High around 70F. Winds WNW at 10 to 20 mph.

nt_clear Tuesday Night

Mostly clear skies early will give way to low clouds and fog after midnight. Low 54F. Winds W at 10 to 15 mph.

partlycloudy Wednesday

Sunshine and clouds mixed. High 72F. Winds WNW at 10 to 20 mph.

nt_clear Wednesday Night

A few clouds from time to time. Low near 55F. Winds WSW at 10 to 15 mph.

clear Thursday

Sunny skies. High 72F. Winds W at 10 to 20 mph.

nt_clear Thursday Night

Clear to partly cloudy. Low 56F. Winds WSW at 10 to 15 mph.

clear Friday

Mainly sunny. High 74F. Winds W at 10 to 20 mph.

nt_clear Friday Night

Clear. Low 57F. Winds WSW at 10 to 15 mph.

clear Saturday

A mainly sunny sky. High near 75F. Winds WSW at 10 to 15 mph.

nt_clear Saturday Night

A mostly clear sky. Low 58F. Winds WSW at 10 to 15 mph.

clear Sunday

Mainly sunny. High 73F. Winds WSW at 10 to 20 mph.

nt_clear Sunday Night

Clear skies. Low 58F. Winds WSW at 10 to 15 mph.

clear Monday

Sunny skies. High 72F. Winds WSW at 10 to 20 mph.

nt_clear Monday Night

Clear skies. Low 58F. Winds WSW at 10 to 15 mph.

Almanac

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

May 29, 2015
Normal high: 70°
Record high: 80° (1997)
 
Normal low: 54°
Record low: 48° (2011)
 

Complete weather almanac

Astronomy

Sunrise: 05:49 AM (PDT)
Moon Rise: 04:40 PM (PDT)
 
Sunset: 08:22 PM (PDT)
Moon Set: 03:30 AM (PDT)
Moon Phase
 
May. 29 Jun. 02 Jun. 09 Jun. 16 Jun. 24

Air Pollution Forecast for Oakland

  Air Quality AQ Index Pollutant
YesterdayGoodOZONE
YesterdayGoodPM2.5
CurrentGoodOZONE
CurrentGoodPM2.5
ThuGood OZONE
FriGood OZONE
SatGood OZONE
SunGood OZONE
MonGood PM2.5
TueGood OZONE

Bay Area Conditions

  Yesterday Today Conditions
  High Low High Low  
Antioch 75° 54° 78° 55° Clear
Benicia 75° 54° 78° 55° Clear
Berkeley 63° 54° 69° 54° Overcast
Brentwood 77° 54° 80° 57° Scattered Clouds
Concord 75° 54° 78° 55° Clear
Fairfield 75° 54° 82° 53° Clear
Fremont 64° 54° 71° 55° Overcast
Half Moon Bay 64° 54° 70° 54° Overcast
Hayward 64° 54° 71° 55° Overcast
Livermore 77° 54° 80° 57° Scattered Clouds
Moffett Field 70° 55° 77° 56° Overcast
Napa 70° 52° 77° 53° Overcast
Novato 70° 50° 77° 51° Overcast
Oakland 63° 54° 69° 54° Overcast
Richmond 63° 54° 69° 54° Overcast
Redwood City 70° 55° 77° 56° Overcast
San Francisco 64° 54° 70° 54° Overcast
San Jose 72° 57° 78° 56° Overcast
San Mateo 64° 54° 70° 54° Overcast
San Rafael 70° 50° 77° 51° Overcast
San Ramon 77° 54° 80° 57° Scattered Clouds
Santa Rosa 72° 52° 82° 52° Overcast
Santa Cruz 63° 50° 76° 53° Overcast
Tracy 82° 48° 90° 55° Clear
Vacaville 82° 54° 87° 54° Clear
Walnut Creek 75° 54° 78° 55° Clear
Arcata 55° 50° 66° 54° Overcast
Bakersfield 88° 61° 96° 68° Clear
Fresno 90° 55° 97° 63° Scattered Clouds
Henderson 97° 68° 97° 72° Clear
Los Angeles 75° 57° 81° 62° Clear
Monterey 63° 54° 69° 53° Overcast
Mount Shasta 81° 43° 85° 54° Clear
Palm Springs 97° 66° 102° 74° Clear
Redding 90° 61° 97° 65° Clear
Reno 82° 48° 87° 54° Partly Cloudy
Sacramento 81° 54° 89° 55° Clear
San Diego 72° 63° 72° 61° Overcast
South Lake Tahoe 72° 37° 78° 44° Clear
Ukiah 88° 50° 87° 55° Clear
Yosemite National Park 86° 59° 85° 60° Clear
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