• Today

    Sep 18

    76°Lo 54°

    Variable clouds; not as warm

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      7 - Low
    more
  • Fri

    Sep 19

    81°Lo 55°

    Mostly sunny and warmer

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      7 - Low
  • Sat

    Sep 20

    77°Lo 56°

    Plenty of sunshine

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      7 - Low
    more
  • Sun

    Sep 21

    78°Lo 55°

    Plenty of sunshine

    Low ragweed pollen levels
    • Precip
      0%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      9%
    more
  • Mon

    Sep 22

    79°Lo 53°

    Plenty of sun

    Ragweed Pollen Weather
    • Precip
      1%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      0%
    more
Next Previous
Hi 81° RealFeel® 82° Precipitation 1%

Day

N

E

S

W

  • SW 6 mph
  • Gusts: 12 mph

Mostly sunny and warmer

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 55° RealFeel® 53° Precipitation 0%

Night

N

E

S

W

  • WSW 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

Napa Pollen Levels - September 19

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Grass

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Sep 19

more Historical Weather Data >
  Today Normal Record 9/19/2013
High 81° 84° N/A 81°
Low 55° 50° N/A 50°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:54 AM with 12:17 of sunlight, then sets at 7:11 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:47 AM with 13:53 of moolight, then sets at 4:40 PM

Top Story

Napa Weather Report

San Francisco: Sunshine, Seasonable Temperatures to Continue

September 18, 2014; 6:37 AM ET

The Bay Area will continue to feature sunshine and seasonable temperatures as the summer season comes to a close. more >

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps