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Personalized Forecasts

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    • Early AM

      Sep 27

      46° Lo
      Mainly clear
      • Asthma
      • Weather
      • Hi RealFeel: 65°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More
    • Today

      Sep 27

      64° /48°F
      Turning out cloudy and breezy
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 62°
      • UV: 4 - Moderate
      • Air Qual.: Good
    • Wed

      Sep 28

      61° /52°
      An a.m. shower; mostly cloudy
      • Neutral
      • weather for asthma
      • Hi RealFeel: 59°
      • UV: 2 - Low
      • Air Qual.: Good
      More
    • Thu

      Sep 29

      68° /56°
      A brief shower or two
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 67°
      • UV: 2 - Low
      • Air Qual.: Good
      More
    • Fri

      Sep 30

      62° /55°
      Cloudy with spotty showers
      • Neutral
      • weather for asthma
      • Hi RealFeel: 58°
      • UV: 2 - Low
      • Air Qual.: Good
      More
    63°/50° RealFeel® 62°/45°
    Mostly sunny
    • 14 mph
    • Precipitation: 14%
    • Rain: 0 in
    • Snow: 0 in
    • Humidity: 53%
    • Cloud Cover: 22%
    • Dew Point: 40° F
    • Visibility: 10 mi

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/27/2015
    High 64° 68° N/A 69°
    Low 48° 49° N/A 60°

    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

    Mchenry 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 >

    Tue. Air Quality

    Tue. Asthma Risk

    Tue. UV Index