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    • Today

      Sep 26

      66° /46°
      Breezy with clouds, then sun
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Tue

      Sep 27

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

      Sep 30

      67° /51°
      Rather cloudy, showers around
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    Tuesday
    7am
    8am
    9am
    10am
    11am
    12pm
    1pm
    2pm
    Forecast Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny
    Temp (°F) 46° 49° 52° 57° 59° 61° 62° 62°
    RealFeel® 41° 43° 47° 53° 58° 60° 61° 61°
    Wind (mph) 9 WSW 12 W 13 W 14 W 15 W 15 W 16 W 17 W
    precip
    7am
    8am
    9am
    10am
    11am
    12pm
    1pm
    2pm
    Rain
    0%
    0%
    0%
    0%
    1%
    1%
    3%
    7%
    Snow
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Ice
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    SKY
    7am
    8am
    9am
    10am
    11am
    12pm
    1pm
    2pm
    UV Index 0 0 1 2 3 4 5 4
    Cloud Cover 11% 11% 11% 11% 11% 11% 11% 24%
    Humidity 82% 76% 67% 60% 56% 49% 45% 43%
    Dew Point 41° 42° 42° 43° 44° 41° 40° 40°
    Temp °F
    7am
    8am
    9am
    10am
    11am
    12pm
    1pm
    2pm
    65° 60° 55° 50° 45°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/27/2015
    High 63° 70° N/A 73°
    Low 47° 49° N/A 59°

    Sunrise/Sunset

    • Sunrise: 6:47 AM
    • Sunset: 6:40 PM
    • Duration: 11:53 hr

    Moonrise/Moonset

    • Moonrise: 3:21 AM
    • Moonset: 5:10 PM
    • Duration: 13:49 hr
    Astronomy

    Crystal Lake Weather Report

    Chilly winds to howl across Great Lakes early this week

    September 26, 2016; 3:03 AM ET

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

    Tue. Pollen

    Tue. Dust & Dander

    Tue. Wind Maps