• Today

    Aug 4

    74°Lo 56°

    A blend of sun and clouds

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      25%
    • Hi
      RealFeel
      75°
  • Wed

    Aug 5

    80°Lo 55°

    Low clouds, then sunshine

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      12%
    • Hi
      RealFeel
      79°
    more
  • Thu

    Aug 6

    80°Lo 58°

    Low clouds breaking

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      13%
    • Hi
      RealFeel
      81°
    more
  • Fri

    Aug 7

    76°Lo 55°

    Low clouds breaking

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      8%
    • Hi
      RealFeel
      78°
    more
  • Sat

    Aug 8

    78°Lo 55°

    Mostly sunny

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      1%
    • Hi
      RealFeel
      79°
    more
Next Previous
Hi 74° RealFeel® 75° Precipitation 25%

Day

N

E

S

W

  • WSW 13 mph
  • Gusts: 20 mph

Intervals of clouds and sunshine; a refreshing breeze this afternoon

  • Max UV Index: 6 (High)
  • Thunderstorms: 9%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 56° RealFeel® 52° Precipitation 10%

Night

N

E

S

W

  • W 9 mph
  • Gusts: 17 mph

Partly cloudy this evening; late-night low clouds

  • Max UV Index: N/A
  • Thunderstorms: 2%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Aug 4

more Historical Weather Data >
  Today Normal Record 8/4/2014
High 74° 82° 106° (1998) 75°
Low 56° 55° 46° (1949) 57°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:13 AM with 14:03 of sunlight, then sets at 8:16 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:08 PM with 13:11 of moolight, then sets at 12:19 PM

Napa Weather Report

San Francisco: Seasonable Conditions to Persist Through Week

August 4, 2015; 3:13 PM ET

Dry and seasonable conditions will continue across the San Francisco Bay area this week. more >

Why Do Leaves Change Color?

Sep 20, 2011; 5:00 AM ET Why do leaves change from green to beautiful shades of red, orange and yellow in the fall?

Current Drought Status

Current Soil Conditions

Tue. Overnight Freeze

Tue. Degree Days

Tue. Evapotranspiration