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    • Today

      Sep 29

      65° /57°
      A little afternoon rain
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Fri

      Sep 30

      61° /58°
      Breezy with rain and drizzle
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Sat

      Oct 1

      65° /60°F
      Cloudy with a touch of rain
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
    • Sun

      Oct 2

      68° /61°
      Cloudy with showers around
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Mon

      Oct 3

      70° /58°
      A brief shower or two
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    62°/61° RealFeel® 60°/57°
    Low clouds
    • 8 mph
    • Precipitation: 25%
    • Rain: 0 in
    • Snow: 0 in
    • Humidity: 95%
    • Cloud Cover: 99%
    • Dew Point: 60° F
    • Visibility: 2 mi

    Temperature History

    more Historical Weather Data >
      Today Normal Record 10/1/2015
    High 65° 68° 83° (1986) 61°
    Low 60° 51° 37° (1992) 56°

    Sunrise/Sunset

    • Sunrise: 6:49 AM
    • Sunset: 6:33 PM
    • Duration: 11:44 hr

    Moonrise/Moonset

    • Moonrise: 7:16 AM
    • Moonset: 7:08 PM
    • Duration: 11:52 hr
    Astronomy

    Holtsville Weather Report

    Persistent rain to raise flood risk in part of northeastern US late this week

    September 29, 2016; 8:16 AM ET

    Rain will spread over much of the northeastern U.S. into the weekend, but persistent downpours will raise the flood risk in part of the mid-Atlantic. More >

    Sat. Dust & Dander

    Sat. Wind Maps