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    • Tonight

      Dec 3

      28° Lo
      Clear to partly cloudy
      • 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
    • Sun

      Dec 4

      43° /29°F
      Sunshine giving way to clouds
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
    • Mon

      Dec 5

      45° /29°
      Clouds giving way to some sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Tue

      Dec 6

      43° /36°
      Cloudy most of the time
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Wed

      Dec 7

      42° /37°
      Cloudy with a bit of rain
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    43°Hi RealFeel® 40° Precipitation 1%
    Sunshine giving way to clouds
    • NNW 7 mph
    • Gusts: 12 mph
    • Max UV Index: 2 (Low)
    • Thunderstorms: 0%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    29°Lo RealFeel® 29° Precipitation 75%
    Mostly cloudy with a little snow towards dawn, up to 1"; roads and sidewalks will be slippery
    • NNE 4 mph
    • Gusts: 7 mph
    • Max UV Index: N/A
    • Thunderstorms: 0%
    • Precipitation: 0.06 in
    • Rain: 0 in
    • Snow: 0.8 in
    • Ice: 0 in
    • Hours of Precipitation: 1.5 hrs
    • Hours of Rain: 0 hrs

    Katonah Pollen Levels Dec 4

    • 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 12/4/2015
    High 43° 44° 72° (1998) 49°
    Low 29° 31° 10° (1976) 31°

    Sunrise/Sunset

    • Sunrise: 7:05 AM
    • Sunset: 4:26 PM
    • Duration: 9:21 hr

    Moonrise/Moonset

    • Moonrise: 10:45 AM
    • Moonset: 9:16 PM
    • Duration: 10:31 hr
    Astronomy

    Sun. Pollen

    Sun. Dust & Dander

    Sun. Wind Maps