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    • Tonight

      Sep 25

      53° Lo
      Cloudy, a shower or t-storm
      • 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
    • Mon

      Sep 26

      65° /45°F
      Breezy with clouds and sun
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
    • Tue

      Sep 27

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

      Sep 28

      62° /51°
      A morning shower in spots
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      68° /52°
      Sunny much of the time
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    Monday
    4am
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    11am
    Forecast Cloudy Cloudy Cloudy Cloudy Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny
    Temp (°F) 57° 55° 54° 53° 55° 56° 59° 61°
    RealFeel® 53° 51° 50° 49° 49° 52° 56° 59°
    Wind (mph) 10 WNW 9 W 9 W 9 W 12 W 13 W 15 W 16 W
    precip
    4am
    5am
    6am
    7am
    8am
    9am
    10am
    11am
    Rain
    47%
    34%
    34%
    22%
    0%
    0%
    0%
    0%
    Snow
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Ice
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    SKY
    4am
    5am
    6am
    7am
    8am
    9am
    10am
    11am
    UV Index 0 0 0 0 0 1 2 3
    Cloud Cover 95% 95% 95% 95% 25% 25% 25% 25%
    Humidity 93% 89% 88% 89% 81% 75% 69% 64%
    Dew Point 55° 52° 50° 50° 49° 48° 49° 49°
    Temp °F
    4am
    5am
    6am
    7am
    8am
    9am
    10am
    11am
    65° 60° 55° 50°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/26/2015
    High 65° 71° N/A 74°
    Low 45° 50° N/A 56°

    Sunrise/Sunset

    • Sunrise: 6:46 AM
    • Sunset: 6:42 PM
    • Duration: 11:56 hr

    Moonrise/Moonset

    • Moonrise: 2:20 AM
    • Moonset: 4:34 PM
    • Duration: 14:14 hr
    Astronomy

    Crystal Lake Weather Report

    Chilly winds to howl across Great Lakes early this week

    September 25, 2016; 5:13 PM ET

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

    Mon. Pollen

    Mon. Dust & Dander

    Mon. Wind Maps