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National Weather Service:
Heat Advisory



Bay Area Forecast

Today's Highs/Lows
Concord 90° / 61°
Fairfield 88° / 57°
Fremont 82° / 59°
Hayward 84° / 61°
Livermore 88° / 57°
Moffett Field 82° / 59°
Napa 88° / 54°
Oakland 82° / 61°
Redwood City 84° / 61°
San Francisco 82° / 64°
San Jose 81° / 59°
San Rafael 86° / 55°
Santa Cruz 86° / 57°

Going Somewhere?

Selected Highs/Lows
Arcata 68° / 46°
Bakersfield 88° / 61°
Fresno 88° / 61°
Henderson 84° / 61°
Los Angeles 86° / 64°
Monterey 77° / 63°
Mount Shasta 70° / 39°
Palm Springs 97° / 72°
Redding 86° / 57°
Reno 66° / 39°
Sacramento 86° / 55°
San Diego 75° / 66°
S. Lake Tahoe 63° / 34°
Ukiah 90° / 50°
Yosemite 81° / 48°
Weather

Current Conditions
Update: 12:54 PM

Castro Valley, CA
Clear

Clear Temperature: 72°
Wind: WNW 6 mph
Dew point:57°
Pressure:29.96 in.
Humidity: 59%
Visibility: 10.0 miles
Observed at: Hayward, CA

Forecast for Castro Valley

partlycloudy

Wednesday

Clear in the morning, then partly cloudy. High of 84F. Winds from the West at 5 to 15 mph.

nt_clear

Wednesday Night

Clear. Low of 61F. Winds less than 5 mph.

partlycloudy

Thursday

Partly cloudy. High of 90F. Winds less than 5 mph.

Bay Area Temps

Updated: 4:16 PM EDT on October 01, 2014
Fairfield
82°
Half Moon Bay
64°
Hayward
72°
Livermore
82°
Moffett Field
71°
Napa
87°
Novato
75°
Oakland
65°
Richmond
65°
San Francisco
81°
San Jose
70°
Santa Rosa
76°
Walnut Creek
74°
Map


World Weather Search

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

5 Day Forecast for ZIP Code 94546

Wednesday Thursday Friday Saturday Sunday
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
High: 84°
Low: 61°
Detail | Almanac
Partly Cloudy
High: 90°
Low: 64°
Detail | Almanac
Partly Cloudy
High: 95°
Low: 66°
Detail | Almanac
Partly Cloudy
High: 90°
Low: 64°
Detail | Almanac
Partly Cloudy
High: 82°
Low: 63°
Detail | Almanac

Extended forecast for Castro Valley

nt_partlycloudy Thursday Night

Clear in the evening, then overcast. Low of 64F. Winds less than 5 mph.

partlycloudy Friday

Partly cloudy. High of 95F. Winds from the SSW at 5 to 10 mph shifting to the West in the afternoon.

nt_partlycloudy Friday Night

Mostly cloudy. Low of 66F. Winds less than 5 mph.

partlycloudy Saturday

Partly cloudy. High of 90F. Winds from the NNE at 5 to 10 mph shifting to the WNW in the afternoon.

nt_partlycloudy Saturday Night

Mostly cloudy in the evening, then overcast. Low of 64F. Winds less than 5 mph.

partlycloudy Sunday

Partly cloudy. High of 82F. Winds less than 5 mph.

nt_partlycloudy Sunday Night

Partly cloudy. Low of 63F. Winds less than 5 mph.

partlycloudy Monday

Partly cloudy. High of 79F. Winds less than 5 mph.

nt_partlycloudy Monday Night

Partly cloudy. Low of 61F. Winds less than 5 mph.

partlycloudy Tuesday

Partly cloudy. High of 73F. Winds from the WSW at 5 to 10 mph.

nt_partlycloudy Tuesday Night

Partly cloudy. Low of 61F. Winds less than 5 mph.

partlycloudy Wednesday

Partly cloudy. High of 73F. Winds from the WSW at 5 to 10 mph.

nt_partlycloudy Wednesday Night

Partly cloudy. Low of 59F. Winds less than 5 mph.

partlycloudy Thursday

Partly cloudy. High of 72F. Winds less than 5 mph.

nt_partlycloudy Thursday Night

Partly cloudy. Low of 57F. Winds less than 5 mph.

partlycloudy Friday

Partly cloudy. High of 72F. Winds less than 5 mph.

nt_partlycloudy Friday Night

Partly cloudy. Low of 57F. Winds less than 5 mph.

clear Saturday

Clear. High of 72F. Winds less than 5 mph.

nt_clear Saturday Night

Clear. Low of 59F. Winds less than 5 mph.

clear Sunday

Clear. High of 75F. Winds less than 5 mph.

nt_clear

Almanac

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

October 1, 2014
Normal high: 74°
Record high: 95° (2012)
 
Normal low: 56°
Record low: 50° (2009)
 

Complete weather almanac

Astronomy

Sunrise: 07:03 AM (PDT)
Moon Rise: 02:04 PM (PDT)
 
Sunset: 06:51 PM (PDT)
Moon Set: No Moon Set /
Moon Phase
 
Oct. 01 Oct. 08 Oct. 15 Oct. 23 Oct. 30

Air Pollution Forecast for Oakland

  Air Quality AQ Index Pollutant
YesterdayGoodPM2.5
YesterdayGoodOZONE
CurrentModeratePM2.5
CurrentGoodOZONE
WedGood PM2.5
ThuModerate NO2
FriModerate NO2
SatModerate PM2.5
SunModerate PM2.5
MonModerate PM2.5

Bay Area Conditions

  Yesterday Today Conditions
  High Low High Low  
Antioch 82° 59° 90° 61° Partly Cloudy
Benicia 82° 59° 90° 61° Partly Cloudy
Berkeley 70° 57° 82° 61° Partly Cloudy
Brentwood 81° 55° 88° 57° Clear
Concord 82° 59° 90° 61° Partly Cloudy
Fairfield 79° 54° 88° 57° Clear
Fremont 73° 55° 82° 59° Clear
Half Moon Bay 66° 54° 73° 61° Overcast
Hayward 73° 61° 84° 61° Clear
Livermore 81° 55° 88° 57° Clear
Moffett Field 75° 55° 82° 59° Clear
Napa 79° 45° 88° 54° Clear
Novato 81° 50° 86° 55° Clear
Oakland 70° 57° 82° 61° Partly Cloudy
Richmond 70° 57° 82° 61° Partly Cloudy
Redwood City 77° 57° 84° 61° Clear
San Francisco 72° 61° 82° 64° Clear
San Jose 72° 57° 81° 59° Partly Cloudy
San Mateo 72° 61° 82° 64° Clear
San Rafael 81° 50° 86° 55° Clear
San Ramon 81° 55° 88° 57° Clear
Santa Rosa 84° 48° 90° 54° Partly Cloudy
Santa Cruz 73° 57° 86° 57° Partly Cloudy
Tracy 82° 55° 86° 61° Clear
Vacaville 84° 54° 90° 57° Clear
Walnut Creek 82° 59° 90° 61° Partly Cloudy
Arcata 64° 57° 68° 46° Clear
Bakersfield 81° 61° 88° 61° Clear
Fresno 88° 63° 88° 61° Partly Cloudy
Henderson 82° 61° 84° 61° Clear
Los Angeles 84° 64° 86° 64° Clear
Monterey 68° 55° 77° 63° Mostly Cloudy
Mount Shasta 75° 41° 70° 39° Clear
Palm Springs 97° 68° 97° 72° Clear
Redding 79° 54° 86° 57° Clear
Reno 75° 43° 66° 39° Mostly Cloudy
Sacramento 81° 54° 86° 55° Clear
San Diego 81° 64° 75° 66° Scattered Clouds
South Lake Tahoe 68° 36° 63° 34° Clear
Ukiah 82° 52° 90° 50° Clear
Yosemite National Park 77° 48° 81° 48° Clear

... Heat advisory in effect from noon Thursday to 9 PM PDT
Friday...

The National Weather Service in the San Francisco Bay area has
issued a heat advisory... which is in effect from noon Thursday to
9 PM PDT Friday for all areas.

* Temperature: widespread 80s and 90s with some interior locations
forecast to go into the lower 100s.

* Location: the entire San Francisco and Monterey Bay region
including local beaches.

* Timing: very warm weather is expected for both Thursday and
Friday with another round of very warm weather possible on
Saturday.


Precautionary/preparedness actions...

A heat advisory means that a period of hot temperatures is
expected. The combination of hot temperatures and high humidity
will combine to create a situation in which heat illnesses are
possible. Drink plenty of fluids... stay in an air-conditioned
room... stay out of the sun... and check up on relatives and
neighbors. Never leave children or pets alone in a car as
temperatures will quickly rise to dangerous levels.

Take extra precautions if you work or spend time outside. When
possible... reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water. To reduce the risk during
outdoor work the occupational safety and health administration
recommends scheduling frequent rest breaks in shaded or air
conditioned environments. Anyone overcome by heat should be moved
to a cool and shaded location. Heat stroke is an emergency - call
911.




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