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    • Early AM

      Sep 26

      53° Lo
      A shower possible
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Today

      Sep 26

      66° /46°
      Breezy with clouds, then sun
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Tue

      Sep 27

      63° /47°
      Mostly sunny and breezy
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Wed

      Sep 28

      61° /52°
      A morning shower in spots
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      66° /51°F
      Mostly sunny
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low

    Day

    66°Hi RealFeel® 65° Precipitation 0%
    Mostly sunny
    • NNE 13 mph
    • Gusts: 18 mph
    • Max UV Index: 4 (Moderate)
    • 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

    51°Lo RealFeel® 47° Precipitation 2%
    Clear to partly cloudy
    • N 8 mph
    • Gusts: 12 mph
    • Max UV Index: N/A
    • Thunderstorms: 0%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/29/2015
    High 66° 69° N/A 67°
    Low 51° 48° N/A 55°

    Sunrise/Sunset

    • Sunrise: 6:49 AM
    • Sunset: 6:37 PM
    • Duration: 11:48 hr

    Moonrise/Moonset

    • Moonrise: 5:22 AM
    • Moonset: 6:12 PM
    • Duration: 12:50 hr
    Astronomy

    Crystal Lake Weather Report

    Chilly winds to howl across Great Lakes early this week

    September 26, 2016; 12:03 AM ET

    Gusty winds will accompany a push of chilly air across the Great Lakes from Sunday night through Tuesday. More >

    Thu. Dust & Dander

    Thu. Wind Maps