• Today

    Sep 30

    62°Lo 47°

    Some sun returning; cooler

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      4%
    • Hi
      RealFeel
      64°
  • Wed

    Oct 1

    71°Lo 58°

    Pleasant with clouds and sun

    Excellent for lawn mowing
    • Hours of Precip
      2
    • Precip
      13%
    • Hi
      RealFeel
      70°
    more
  • Thu

    Oct 2

    74°Lo 54°

    A couple of thunderstorms

    Fair for lawn mowing
    • Hours of Precip
      14
    • Precip
      61%
    • Hi
      RealFeel
      70°
    more
  • Fri

    Oct 3

    57°Lo 40°

    Cooler with a shower

    Fair for lawn mowing
    • Hours of Precip
      1
    • Precip
      44%
    • Hi
      RealFeel
      53°
    more
  • Sat

    Oct 4

    54°Lo 41°

    Chance of a shower

    Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      30%
    • Hi
      RealFeel
      48°
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
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Forecast
Mostly Clear
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Mostly Clear
Mostly Clear
Mostly Clear
Temp (°F) 53° 52° 51° 50° 49° 49° 48° 48°
RealFeel® 51° 50° 49° 48° 48° 48° 47° 47°
Humidity 78% 81% 85% 89% 90% 92% 92% 92%
   
  8pm 9pm 10pm 11pm 12am 1am 2am 3am
Rain
 
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Snow
 
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  8pm 9pm 10pm 11pm 12am 1am 2am 3am
Wind (mph) 4 NE 4 NE 4 NE 3 ENE 3 ENE 3 ENE 3 E 3 E
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 28% 45% 45% 45% 31% 26% 26% 26%
Dew Point 46° 47° 47° 46° 47° 47° 46° 46°
Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F

Temperature History - Sep 30

more Historical Weather Data >
  Today Normal Record 9/30/2013
High 62° 66° N/A 73°
Low 47° 42° N/A 35°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:49 AM with 11:48 of sunlight, then sets at 6:37 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:02 PM with 9:59 of moolight, then sets at 11:01 PM

Top Story

Crystal Lake Weather Report

Chicago: Mix of Sun, Storms Ahead as Temperatures Fluctuate

September 30, 2014; 12:40 PM ET

The Chicago area is set for a roller-coaster weather pattern over the next few days as temperatures rise and fall in between alternating sunny and stormy skies. more >

Why Do Leaves Change Color?

Sep 20, 2011; 5:00 AM ET Why do leaves change from green to beautiful shades of red, orange and yellow in the fall?

Current Drought Status

Current Soil Conditions

Tue. Overnight Freeze

Tue. Degree Days

Tue. Evapotranspiration