• Today

    May 31

    82°Lo 52°

    Areas of low clouds, then sun

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      1%
    • Hi
      RealFeel
      87°
    more
  • Wed

    Jun 1

    81°Lo 52°

    Areas of low clouds, then sun

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      3%
    • Hi
      RealFeel
      85°
    more
  • Thu

    Jun 2

    83°Lo 52°

    Partly sunny and very warm

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      0%
    • Hi
      RealFeel
      85°
  • Fri

    Jun 3

    86°Lo 54°

    Partly sunny and very warm

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      0%
    • Hi
      RealFeel
      90°
    more
  • Sat

    Jun 4

    87°Lo 56°

    Partly sunny and very warm

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      3%
    • Hi
      RealFeel
      92°
    more
Next Previous
Hi 83° RealFeel® 85° Precipitation 0%

Day

N

E

S

W

  • WSW 7 mph
  • Gusts: 13 mph

Very warm with areas of low clouds, then some sun

  • Max UV Index: 8 (Very High)
  • Thunderstorms: 2%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 52° RealFeel® 54° Precipitation 0%

Night

N

E

S

W

  • SSE 5 mph
  • Gusts: 10 mph

Clear

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

Temperature History - Jun 2

more Historical Weather Data >
  Today Normal Record 6/2/2015
High 83° 74° N/A 64°
Low 52° 53° N/A 55°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:48 AM with 14:38 of sunlight, then sets at 8:26 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:10 AM with 13:38 of moolight, then sets at 5:48 PM

Castro Valley Weather Report

San Francisco: Warm, dry weather to kick off June

May 31, 2016; 5:31 AM ET

The first part of June will be dry and warm in the Bay Area after some cooler-than-normal weather during the second half of May. more >

Thu. Degree Days

Thu. Evapotranspiration