• Tonight

    Aug 31

    Lo 67°

    Mainly clear, warm; fog late

    Migraine Headache Weather
    • Hi
      RealFeel
      90°
    • UV
      4 - Moderate
    • Cloud
      Cover
      55%
  • Tue

    Sep 1

    88°Lo 68°

    Fog in the a.m.; mostly sunny

    Beneficial weather for migraines
    • Hi
      RealFeel
      94°
    • UV
      5 - High
    • Cloud
      Cover
      11%
    more
  • Wed

    Sep 2

    89°Lo 67°

    Partly sunny, warm and humid

    Beneficial weather for migraines
    • Hi
      RealFeel
      95°
    • UV
      5 - High
    • Cloud
      Cover
      26%
    more
  • Thu

    Sep 3

    89°Lo 66°

    Mostly sunny and very warm

    Beneficial weather for migraines
    • Hi
      RealFeel
      94°
    • UV
      5 - High
    • Cloud
      Cover
      23%
    more
  • Fri

    Sep 4

    90°Lo 64°

    Mostly sunny and very warm

    Beneficial weather for migraines
    • Hi
      RealFeel
      94°
    • UV
      5 - High
    • Cloud
      Cover
      18%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
12pm
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  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Forecast
Hazy
Hazy
Hazy
Hazy
Hazy
Hazy
Hazy
Hazy
Temp (°F) 78° 81° 83° 85° 84° 83° 82° 78°
RealFeel® 85° 88° 90° 90° 87° 85° 83° 78°
Humidity 61% 54% 50% 50% 50% 54% 60% 66%
   
  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Rain
 
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Snow
 
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  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Wind (mph) 2 WNW 4 SSW 5 SSW 6 SW 7 SSW 7 SSW 6 SSW 6 SSW
UV Index 4 4 5 4 3 2 1 0
Cloud Cover 82% 64% 40% 62% 52% 28% 32% 33%
Dew Point 63° 63° 62° 64° 64° 65° 67° 66°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F

Temperature History - Aug 31

more Historical Weather Data >
  Today Normal Record 8/31/2014
High 85° 78° N/A 82°
Low 67° 55° N/A 57°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 2:17 AM with 0:00 of sunlight, then sets at 2:17 AM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:17 AM with 0:00 of moolight, then sets at 2:17 AM

Crystal Lake Weather Report

Chicago: More Foggy Mornings in Store as Heat Holds on

August 31, 2015; 9:17 PM ET

Chicagoans can expect to begin September with a stretch of higher temperatures, increasing humidity and more foggy mornings. more >

Mon. Migraine Headache

Mon. UV Index