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    • Today

      Sep 25

      67° /52°
      Plenty of sunshine
      • 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
    • Mon

      Sep 26

      67° /62°F
      Sunny to partly cloudy
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
    • Tue

      Sep 27

      71° /59°
      Morning rain
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Wed

      Sep 28

      72° /63°
      Times of sun and clouds
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      74° /60°
      Mostly cloudy and humid
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    67°Hi RealFeel® 71° Precipitation 7%
    Sunny to partly cloudy
    • SE 7 mph
    • Gusts: 12 mph
    • Max UV Index: 5 (Moderate)
    • Thunderstorms: 2%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    62°Lo RealFeel® 56° Precipitation 76%
    Increasing cloudiness with periods of rain late
    • S 12 mph
    • Gusts: 17 mph
    • Max UV Index: N/A
    • Thunderstorms: 8%
    • Precipitation: 0.41 in
    • Rain: 0.41 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 4 hrs
    • Hours of Rain: 4 hrs

    Sag Harbor Pollen Levels Sep 26

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

      Low

    • Ragweed Pollen

      Low

    • Mold

      High

    • Grass Pollen

      Low

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/26/2015
    High 67° 70° N/A 70°
    Low 62° 48° N/A 54°

    Sunrise/Sunset

    • Sunrise: 6:41 AM
    • Sunset: 6:38 PM
    • Duration: 11:57 hr

    Moonrise/Moonset

    • Moonrise: 2:16 AM
    • Moonset: 4:26 PM
    • Duration: 14:10 hr
    Astronomy

    Sag Harbor Weather Report

    Crisp fall air to bring first frost of season to parts of northeastern US

    September 25, 2016; 9:19 AM ET

    Fall air has finally arrived in the northeastern United States and may yield the first frost of the season in parts of the region this weekend. More >

    Mon. Pollen

    Mon. Dust & Dander

    Mon. Wind Maps