, °F

Personalized Forecasts

Featured Forecast

My Favorite Forecasts

    My Recent Locations

    • Tonight

      Sep 29

      51° Lo
      Increasing cloudiness
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Fri

      Sep 30

      73° /46°F
      Clouds, then sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
    • Sat

      Oct 1

      73° /47°
      Low clouds, then some sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Sun

      Oct 2

      65° /47°
      A couple of afternoon showers
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Mon

      Oct 3

      67° /46°
      Partly sunny and cool
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    73°Hi RealFeel® 73° Precipitation 14%
    Low clouds followed by sunshine
    • W 10 mph
    • Gusts: 17 mph
    • Max UV Index: 4 (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

    Night

    46°Lo RealFeel® 45° Precipitation 12%
    Mainly clear in the evening; low clouds late
    • WNW 6 mph
    • Gusts: 13 mph
    • Max UV Index: N/A
    • Thunderstorms: 1%
    • 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 Sep 30

    • Extreme
    • Very High
    • High
    • Moderate
    • Low
    • Tree Pollen

      Low

    • Ragweed Pollen

      Low

    • Mold

      Low

    • Grass Pollen

      Low

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/30/2015
    High 73° 81° 100° (1980) 70°
    Low 46° 52° 40° (1950) 54°

    Sunrise/Sunset

    • Sunrise: 7:05 AM
    • Sunset: 6:52 PM
    • Duration: 11:47 hr

    Moonrise/Moonset

    • Moonrise: 6:43 AM
    • Moonset: 7:00 PM
    • Duration: 12:17 hr
    Astronomy

    Napa Weather Report

    Cooler air, showers to aid in wildfire efforts across California this weekend

    September 29, 2016; 7:24 PM ET

    Improving weather over the next several days will aid officials in battling wildfires across California. More >

    Fri. Pollen

    Fri. Dust & Dander

    Fri. Wind Maps