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    • Sun

      Oct 2

      66° /54°F
      Variable cloudiness
      • 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
    • Mon

      Oct 3

      68° /55°
      Mostly cloudy
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Tue

      Oct 4

      72° /51°
      Clouds and sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Wed

      Oct 5

      71° /49°
      Clouds and breaks of sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Thu

      Oct 6

      68° /43°
      Cloudy with heavy showers
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    66°Hi RealFeel® 67° Precipitation 25%
    Variable cloudiness
    • W 7 mph
    • Gusts: 12 mph
    • Max UV Index: 3 (Moderate)
    • Thunderstorms: 20%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    54°Lo RealFeel® 54° Precipitation 18%
    Partly cloudy
    • W 5 mph
    • Gusts: 8 mph
    • Max UV Index: N/A
    • Thunderstorms: 20%
    • 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 10/2/2015
    High 66° 68° N/A 61°
    Low 54° 47° N/A 51°

    Sunrise/Sunset

    • Sunrise: 6:52 AM
    • Sunset: 6:32 PM
    • Duration: 11:40 hr

    Moonrise/Moonset

    • Moonrise: 8:17 AM
    • Moonset: 7:39 PM
    • Duration: 11:22 hr
    Astronomy

    Crystal Lake Weather Report

    Chilly winds to howl across Great Lakes early this week

    September 27, 2016; 11:53 AM ET

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