• Tonight

    Jun 25

    Lo 54°

    Clear

    Outdoor Barbecue Weather
    • Precip
      1%
    • Hi
      RealFeel
      89°
    • Wind
      Speed
      9 mph
  • Sun

    Jun 26

    80°Lo 56°

    A full day of sunshine

    Excellent for an outdoor bbq
    • Precip
      3%
    • Hi
      RealFeel
      84°
    • Wind
      Speed
      8 mph
    more
  • Mon

    Jun 27

    81°Lo 55°

    Nice with plenty of sunshine

    Excellent for an outdoor bbq
    • Precip
      0%
    • Hi
      RealFeel
      85°
    • Wind
      Speed
      8 mph
    more
  • Tue

    Jun 28

    83°Lo 54°

    Plenty of sunshine

    Excellent for an outdoor bbq
    • Precip
      2%
    • Hi
      RealFeel
      89°
    • Wind
      Speed
      7 mph
    more
  • Wed

    Jun 29

    82°Lo 54°

    Plenty of sunshine

    Excellent for an outdoor bbq
    • Precip
      1%
    • Hi
      RealFeel
      87°
    • Wind
      Speed
      7 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sat
8am
9am 10am
  8am 9am 10am
Forecast
Sunny
Sunny
Sunny
Temp (°F) 64° 67° 72°
RealFeel® 68° 73° 81°
Humidity 63% 58% 47%
   
  8am 9am 10am
Rain
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
   
  8am 9am 10am
Wind (mph) 2 SW 2 W 4 W
UV Index 2 4 5
Cloud Cover 0% 0% 0%
Dew Point 51° 52° 51°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F

Temperature History - Jun 25

more Historical Weather Data >
  Today Normal Record 6/25/2015
High 85° 76° N/A 90°
Low 54° 55° N/A 55°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:48 AM with 14:46 of sunlight, then sets at 8:34 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:21 AM with -16:-14 of moolight, then sets at 11:07 AM

Castro Valley Weather Report

Extreme heat to exacerbate southwestern US wildfire threat into next week

June 25, 2016; 7:30 PM ET

Another round of sizzling heat threatens to aggravate the ongoing wildfire situation across the southwestern United States through early week. more >

Is Your Outdoor Gear Waterproof?

Dec 5, 2012; 5:00 AM ET Now that it's cold enough to hit the slopes, you may want to look more closely at what materials your winter sports gear is made of. As it turns out, not all waterproofing is created equal.

Sat. Outdoor Entertaining

Sat. Wind Maps

Sat. UV Index