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Personalized Forecasts

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    My Recent Locations

    • Early AM

      Apr 29

      56° Lo
      Mostly cloudy
      • Stargazing
      • Weather
      • Cloud Cover: 70%
      • Precip: 25%
      • Hours of Precip: 0.5
      More
    • Today

      Apr 29

      77° /53°
      A passing morning shower
      • Poor
      • for stargazing
      • Cloud Cover: 70%
      • Precip: 54%
      • Hours of Precip: 1
      More
    • Sun

      Apr 30

      58° /47°
      Cooler with a stray shower
      • Poor
      • for stargazing
      • Cloud Cover: 70%
      • Precip: 25%
      • Hours of Precip: 1
      More
    • Mon

      May 1

      66° /57°F
      Warmer with clearing
      • Poor
      • for stargazing
      • Cloud Cover: 86%
      • Precip: 55%
      • Hours of Precip: 1
    • Tue

      May 2

      69° /51°
      Partly sunny and breezy
      • Very Good
      • for stargazing
      • Cloud Cover: 6%
      • Precip: 18%
      • Hours of Precip: 0
      More

    Day

    66°Hi RealFeel® 67° Precipitation 18%
    Warmer; cloudy with patchy fog in the morning, then periods of clouds and sun in the afternoon
    • S 12 mph
    • Gusts: 17 mph
    • Max UV Index: 4 (Moderate)
    • Thunderstorms: 3%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    57°Lo RealFeel® 49° Precipitation 55%
    Mostly cloudy and mild with a passing shower
    • SSW 14 mph
    • Gusts: 20 mph
    • Max UV Index: N/A
    • Thunderstorms: 29%
    • Precipitation: 0.05 in
    • Rain: 0.05 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 1 hrs
    • Hours of Rain: 1 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 5/1/2016
    High 66° 63° 84° (2001) 49°
    Low 57° 45° 32° (2008) 43°

    Sunrise/Sunset

    • Sunrise: 5:51 AM
    • Sunset: 7:48 PM
    • Duration: 13:57 hr

    Moonrise/Moonset

    • Moonrise: 10:40 AM
    • Moonset: 1:23 AM
    • Duration: 14:43 hr
    Astronomy

    Solunar Information for Holtsville, NY

    Wed, May 3
    First
    Wed, May 10
    Full
    Fri, May 19
    Last
    Thu, May 25
    New

    Mon. Stargazing