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    • Tonight

      Aug 18

      71° Lo F
      Couple of thunderstorms
      • 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
    • Sun

      Aug 19

      73° /67°
      Periods of rain; cooler
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Mon

      Aug 20

      77° /68°
      Mostly cloudy; breezy
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Tue

      Aug 21

      77° /71°
      More clouds than sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Wed

      Aug 22

      84° /66°
      Partly sunny, a thunderstorm
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    86°Hi RealFeel® 94° Precipitation 60%
    Times of sun and clouds; humid
    • Winds from the
    • SW 8 mph
    • Gusts: 21 mph
    • Max UV Index: 6 (High)
    • Thunderstorms: 60%
    • Precipitation: 0.09 in
    • Rain: 0.09 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 2 hrs
    • Hours of Rain: 2 hrs

    Night

    71°Lo RealFeel® 68° Precipitation 61%
    Mostly cloudy, a couple of showers and a thunderstorm, mainly early; humid
    • Winds from the
    • N 8 mph
    • Gusts: 15 mph
    • Max UV Index: N/A
    • Thunderstorms: 40%
    • Precipitation: 0.15 in
    • Rain: 0.15 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 2 hrs
    • Hours of Rain: 2 hrs

    Rockville Centre Pollen Levels Aug 18

    • 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 8/18/2017
    High 86° 82° 93° (1995) 81°
    Low 71° 68° 58° (1963) 73°

    Sunrise/Sunset

    • Sunrise: 6:08 AM
    • Sunset: 7:49 PM
    • Duration: 13:41 hr

    Moonrise/Moonset

    • Moonrise: 2:01 PM
    • Moonset: 12:23 AM
    • Duration: 10:22 hr
    Astronomy

    Sat. Pollen

    Sat. Dust & Dander

    Sat. Wind Maps