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    • Today

      Sep 25

      81° /51°
      Heavy rain and a thunderstorm
      • At Risk
      • weather for asthma
      • Hi RealFeel: 86°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More
    • Mon

      Sep 26

      64° /44°
      Clouds breaking and breezy
      • Neutral
      • weather for asthma
      • Hi RealFeel: 62°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More
    • Tue

      Sep 27

      63° /47°
      Partly sunny and breezy
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 60°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More
    • Wed

      Sep 28

      62° /48°F
      A morning shower in spots
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 62°
      • UV: 4 - Moderate
      • Air Qual.: Good
    • Thu

      Sep 29

      68° /49°
      Sunny much of the time
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 69°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More
    50°/48° RealFeel® 47°/44°
    Clear
    • 7 mph
    • Precipitation: 0%
    • Rain: 0 in
    • Snow: 0 in
    • Humidity: 90%
    • Cloud Cover: 0%
    • Dew Point: 46° F
    • Visibility: 10 mi

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/28/2015
    High 62° 70° N/A 79°
    Low 48° 49° N/A 63°

    Sunrise/Sunset

    • Sunrise: 6:48 AM
    • Sunset: 6:39 PM
    • Duration: 11:51 hr

    Moonrise/Moonset

    • Moonrise: 4:22 AM
    • Moonset: 5:42 PM
    • Duration: 13:20 hr
    Astronomy

    Crystal Lake Weather Report

    Chilly winds to howl across Great Lakes early this week

    September 25, 2016; 8:43 AM ET

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

    Wed. Asthma Risk

    Wed. UV Index