• Early AM

    Jul 7

    Lo 60°

    Cloudy

    Driving Weather
    • Precip
      4%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Today

    Jul 7

    73°Lo 59°

    Low clouds, then sunshine

    Excellent for driving
    • Precip
      3%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Wed

    Jul 8

    70°Lo 60°

    A thunderstorm in spots

    Good for driving
    • Precip
      40%
    • Hours of Precip
      0.5
    • Rain
      0.04 in
  • Thu

    Jul 9

    69°Lo 59°

    Some sunshine

    Excellent for driving
    • Precip
      6%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Fri

    Jul 10

    71°Lo 58°

    Pleasant with periods of sun

    Excellent for driving
    • Precip
      6%
    • Hours of Precip
      0
    • Rain
      0 in
    more
Next Previous
Hi 70° RealFeel® 72° Precipitation 40%

Day

N

E

S

W

  • WNW 12 mph
  • Gusts: 21 mph

Cool with low clouds break for some sun; breezy in the afternoon with a thunderstorm in spots

  • Max UV Index: 8 (Very High)
  • Thunderstorms: 40%
  • Precipitation: 0.04 in
  • Rain: 0.04 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0.5 hrs
  • Hours of Rain: 0.5 hrs
Lo 60° RealFeel® 58° Precipitation 7%

Night

N

E

S

W

  • W 9 mph
  • Gusts: 16 mph

Mainly clear in the evening; low clouds late

  • Max UV Index: N/A
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Jul 8

more Historical Weather Data >
  Today Normal Record 7/8/2014
High 70° N/A N/A 73°
Low 60° N/A N/A 55°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:54 AM with 14:39 of sunlight, then sets at 8:33 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:28 AM with 12:53 of moolight, then sets at 1:21 PM

Castro Valley Weather Report

San Francisco: Cooler, Comfortable Conditions to Start Week

July 7, 2015; 1:57 AM ET

The San Francisco area will remain cool and comfortable into the early part of the upcoming workweek. more >

Travel Weather Forecast

Jul 06, 2015; 5:34 PM ET United States travel weather forecast

Wed. Travel Weather

48 Hour Precipitation Forecast

Wed. Driving Weather