• Today

    Sep 1

    78°Lo 55°

    Decreasing clouds

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
  • Wed

    Sep 2

    77°Lo 53°

    Areas of low clouds, then sun

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Thu

    Sep 3

    77°Lo 49°

    Areas of low clouds, then sun

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Fri

    Sep 4

    78°Lo 50°

    Areas of low clouds, then sun

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Sat

    Sep 5

    81°Lo 51°

    Clouds breaking for sun

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
After a cloudy start, sun returns 78° Lo 71° RealFeel® 77° / 67°

N

E

S

W

  • Precipitation: 0%
  • Rain: 0 in
  • Snow: 0 in
  • Humidity: 56%
  • Cloud Cover: 8%
  • Dew Point: 59° F
  • Visibility: 10 mi
16 mph

Temperature History - Sep 1

more Historical Weather Data >
  Today Normal Record 9/1/2014
High 78° 84° 107° (1955) 91°
Low 55° 54° 44° (1957) 52°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:38 AM with 13:01 of sunlight, then sets at 7:39 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:44 PM with 13:29 of moolight, then sets at 11:13 AM

Napa Weather Report

San Francisco: Dry, Pleasant Conditions to Span Week

September 1, 2015; 1:48 AM ET

The San Francisco area will have dry and seasonable conditions throughout the week. more >

Tue. Pollen

Tue. Dust & Dander

Tue. Wind Maps