• Today

    Jul 28

    85°Lo 57°

    Mostly sunny and very warm

    Very Good for fishing
    • Precip
      2%
    • Cloud
      Cover
      19%
    • Wind
      Speed
      8 mph
  • Fri

    Jul 29

    85°Lo 58°

    Clouds, then sun

    Very Good for fishing
    • Precip
      2%
    • Cloud
      Cover
      44%
    • Wind
      Speed
      8 mph
    more
  • Sat

    Jul 30

    83°Lo 58°

    Mostly sunny

    Very Good for fishing
    • Precip
      1%
    • Cloud
      Cover
      20%
    • Wind
      Speed
      9 mph
    more
  • Sun

    Jul 31

    80°Lo 58°

    Clouds, then sun

    Poor for fishing
    • Precip
      1%
    • Cloud
      Cover
      47%
    • Wind
      Speed
      8 mph
    more
  • Mon

    Aug 1

    79°Lo 57°

    Areas of fog, then sun

    Very Good for fishing
    • Precip
      1%
    • Cloud
      Cover
      47%
    • Wind
      Speed
      8 mph
    more
Next Previous
Next 8 hours >
  Thu
8am
9am 10am 11am 12pm 1pm 2pm 3pm
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Forecast
Cloudy
Partly Cloudy
Partly Sunny
Sunny
Sunny
Sunny
Sunny
Sunny
Temp (°F) 62° 66° 70° 74° 78° 81° 84° 85°
RealFeel® 63° 68° 75° 80° 85° 88° 89° 88°
Humidity 74% 68% 59% 55% 52% 46% 41% 39%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Wind (mph) 5 NW 6 NW 6 NW 7 WNW 8 WNW 8 W 9 W 9 W
UV Index 1 2 5 7 8 9 8 7
Cloud Cover 100% 70% 33% 4% 0% 0% 4% 7%
Dew Point 54° 55° 55° 57° 59° 59° 58° 57°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F

Temperature History - Jul 28

more Historical Weather Data >
  Today Normal Record 7/28/2015
High 85° 77° N/A 91°
Low 57° 57° N/A 57°

Solunar Information for Castro Valley, CA

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:09 AM with 14:11 of sunlight, then sets at 8:20 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:31 AM with 14:05 of moolight, then sets at 3:36 PM

Tue, Aug 2
New
Wed, Aug 10
First
Thu, Aug 18
Full
Thu, Aug 25
Last

Castro Valley Weather Report

Oppressive heat to envelop western US as late-week highs soar 10 to 15 degrees Fahrenheit above average

July 28, 2016; 7:34 AM ET

Highs will run between 10 and 15 degrees Fahrenheit above average across much of the interior western United States into the upcoming weekend. more >

Trout Tactics

Apr 4, 2012; 5:00 AM ET We spend a day with world-renowned fly fisherman Joe Humphreys, who hosted a nationally broadcast fly fishing show on ESPN, and taught his craft for over 40 years. Some of his better-known pupils include former President Jimmy Carter and basketball coach Bobby Knight. Violeta Yas reports.

Radar & Satellite

Thu. Fronts & Pressure

Thu. Fishing Weather