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    • Sat

      Oct 1

      66° /53°F
      Spotty showers
      • 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
    • Sun

      Oct 2

      67° /48°
      Partly sunny with a shower
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Mon

      Oct 3

      65° /48°
      Times of clouds and sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Tue

      Oct 4

      72° /51°
      Mostly cloudy
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Wed

      Oct 5

      72° /47°
      Cloudy
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    66°Hi RealFeel® 65° Precipitation 60%
    Times of clouds and sun with spotty showers
    • NNE 9 mph
    • Gusts: 13 mph
    • Max UV Index: 3 (Moderate)
    • Thunderstorms: 20%
    • Precipitation: 0.08 in
    • Rain: 0.08 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 2 hrs
    • Hours of Rain: 2 hrs

    Night

    53°Lo RealFeel® 50° Precipitation 50%
    Mostly cloudy with a shower in the area late
    • N 6 mph
    • Gusts: 9 mph
    • Max UV Index: N/A
    • Thunderstorms: 20%
    • Precipitation: 0.01 in
    • Rain: 0.01 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0.5 hrs
    • Hours of Rain: 0.5 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 10/1/2015
    High 66° 68° N/A 59°
    Low 53° 48° N/A 53°

    Sunrise/Sunset

    • Sunrise: 6:51 AM
    • Sunset: 6:33 PM
    • Duration: 11:42 hr

    Moonrise/Moonset

    • Moonrise: 7:20 AM
    • Moonset: 7:10 PM
    • Duration: 11:50 hr
    Astronomy

    Crystal Lake Weather Report

    Chilly winds to howl across Great Lakes early this week

    September 27, 2016; 3:53 AM ET

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

    Sat. Dust & Dander

    Sat. Wind Maps