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    • Tonight

      Sep 20

      50° Lo
      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
    • Thu

      Sep 21

      83° /52°F
      Mostly sunny
      • High
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: High
      • Tree Pollen: Low
    • Fri

      Sep 22

      79° /44°
      Breezy with clouds and sun
      • High
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: High
      • Tree Pollen: Low
      More
    • Sat

      Sep 23

      66° /42°
      Not as warm with a t-storm
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Sun

      Sep 24

      52° /39°
      Cooler with periods of rain
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    83°Hi RealFeel® 86° Precipitation 2%
    Mostly sunny
    • Winds from the
    • SSW 12 mph
    • Gusts: 17 mph
    • Max UV Index: 14 (Extreme)
    • Thunderstorms: 1%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    52°Lo RealFeel® 49° Precipitation 6%
    Clear
    • Winds from the
    • S 8 mph
    • Gusts: 15 mph
    • Max UV Index: N/A
    • Thunderstorms: 5%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Castle Rock Pollen Levels Sep 21

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

      Low

    • Ragweed Pollen

      High

    • Mold

      Low

    • Grass Pollen

      Low

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/21/2016
    High 83° 74° N/A 81°
    Low 52° 46° N/A 62°

    Sunrise/Sunset

    • Sunrise: 6:46 AM
    • Sunset: 6:58 PM
    • Duration: 12:12 hr

    Moonrise/Moonset

    • Moonrise: 8:08 AM
    • Moonset: 8:07 PM
    • Duration: 11:59 hr
    Astronomy

    Thu. Pollen

    Thu. Dust & Dander

    Thu. Wind Maps