• Sun

    May 3

    71°Lo 45°

    Mostly sunny and cool

    Ragweed Pollen Weather
    • Precip
      2%
    • Wind
      Speed
      10 mph
    • Cloud
      Cover
      19%
    more
  • Mon

    May 4

    72°Lo 45°

    Mostly sunny and nice

    Ragweed Pollen Weather
    • Precip
      1%
    • Wind
      Speed
      10 mph
    • Cloud
      Cover
      20%
  • Tue

    May 5

    73°Lo 45°

    Mostly sunny

    Ragweed Pollen Weather
    • Precip
      3%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      17%
    more
  • Wed

    May 6

    74°Lo 46°

    Plenty of sunshine

    Ragweed Pollen Weather
    • Precip
      0%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      0%
    more
  • Thu

    May 7

    76°Lo 51°

    Sunny

    Ragweed Pollen Weather
    • Precip
      0%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      14%
    more
Next Previous
Hi 72° RealFeel® 73° Precipitation 1%

Day

N

E

S

W

  • SW 10 mph
  • Gusts: 15 mph

Mostly sunny and nice

  • Max UV Index: 7 (High)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 45° RealFeel® 44° Precipitation 3%

Night

N

E

S

W

  • SW 7 mph
  • Gusts: 13 mph

Partly cloudy and cool

  • 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 - May 4

more Historical Weather Data >
  Today Normal Record 5/4/2014
High 72° 74° 92° (1990) 70°
Low 45° 48° 34° (1975) 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:09 AM with 13:54 of sunlight, then sets at 8:03 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:49 PM with 10:34 of moolight, then sets at 7:23 AM

Napa Weather Report

San Francisco: Dry, Tranquil Weather to Hold for Rest of the Week

April 28, 2015; 3:00 PM ET

Following a warmer start to the week, an onshore flow will bring noticeable cooler conditions and patchy areas of low clouds through midweek. more >